The Magnetic Tape Viewer - see the sound on a tape

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Techmoan

Techmoan

Күн бұрын

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@Techmoan
@Techmoan 4 жыл бұрын
*There’s a bit more information in the video description text box.*
@JuanCarlos-zv6kt
@JuanCarlos-zv6kt 4 жыл бұрын
Gracias
@nethoncho
@nethoncho 4 жыл бұрын
Did you try both sides of the C64 floppy disk? The bottom side has the data btw.
@Techmoan
@Techmoan 4 жыл бұрын
Yes - it took a second to look.
@nethoncho
@nethoncho 4 жыл бұрын
@@Techmoan The gap caused by the sleeve of the disk and the disk it's self may be too large. If you have a scrap floppy, take it out of the sleeve...
@Techmoan
@Techmoan 4 жыл бұрын
@@nethoncho the Raison d'être for the device though is that it’s ‘non destructive’. If you need to destroy a disc to view a tiny fragment of what’s on it turn you could have used some ferro fluid on it instead.
@Jamato-sUn
@Jamato-sUn 4 жыл бұрын
"You're probably not wondering that, but I'm gonna tell you anyway" - that's the attitude I love this channel for.
@DielectricVideos
@DielectricVideos 4 жыл бұрын
Interestingly enough that was actually the first question I had when I saw the sound pattern. It looked almost like digital data to me, so I thought for a second it was encoded as pulse-width modulation that would be played back via a low-pass filter to make audio, but then I realized the tape would have to be moving much to fast for that to be the case.
@RomiWadaKatsu
@RomiWadaKatsu 4 жыл бұрын
that's literally why I'm subscribed
@ricardlupus
@ricardlupus 4 жыл бұрын
I was actually wondering that ... :)
@kidcaramba2392
@kidcaramba2392 3 жыл бұрын
That made me laugh out loud as well and i wanted to comment on it but then i came across yours.
@Nostalgianerd
@Nostalgianerd 3 жыл бұрын
This blows my mind. Seeing the series of simple lines that make up such complex sounds.
@mUbase
@mUbase 3 жыл бұрын
look up the Fourier Transform. :)
@theclearsounds3911
@theclearsounds3911 3 жыл бұрын
Trust me, the content on that tape is FAR more complex than the simple lines that show up on that viewer. You would see a far more detailed picture if you were to play the tape onto an oscilloscope, or frequency analyzer; 2 very different ways of looking at waveforms.
@GodzillaGoesGaga
@GodzillaGoesGaga 3 жыл бұрын
You are looking at the peaks. Think of the sine waves going in and out of the tape and you are looking down at it with something that can only pick up a certain amplitude.
@paulf1071
@paulf1071 3 жыл бұрын
@@GodzillaGoesGaga Yeah, that's the best way to think of it. When you look the pattern first, it looks almost digital, but it's analogue all the way!
@yep_2431
@yep_2431 3 жыл бұрын
Records get me like holy cow
@schoggi555
@schoggi555 4 жыл бұрын
The logo displaying when you put it in the case is a brilliant idea!
@deusexaethera
@deusexaethera 4 жыл бұрын
The magnetic field generated by the case probably also keeps the ferrite particles from settling to one side of the viewer while in storage. Techmoan's viewer was probably stored on its edge like a book.
@darinb.3273
@darinb.3273 4 жыл бұрын
They didn't want you to forget it is a 3M product LOL
@cadpietre4378
@cadpietre4378 4 жыл бұрын
that`s why we still have 3m today
@OofusTwillip
@OofusTwillip 4 жыл бұрын
@@darinb.3273 Good old Minnesota Mining and Manufacturing. 3M, for short.
@unliving_ball_of_gas
@unliving_ball_of_gas 3 жыл бұрын
@@OofusTwillip Oooh, so that's what it stands for! Wait, this is the same company as the modern day 3M tape, right?
@Breakfast_of_Champions
@Breakfast_of_Champions 4 жыл бұрын
I'd never have thought that the magnetic field on tapes is strong enough to move a ferrofluid.
@Carstuff111
@Carstuff111 4 жыл бұрын
They are likely using something the size of the grains in actual tape, but of higher quality to be as sensitive as possible.
@waledali434
@waledali434 4 жыл бұрын
i guess ferrofluid can react to weaker magnetic fields as it get finer and finer
@thecianinator
@thecianinator 4 жыл бұрын
You just wanted to say ferrofluid didn't you
@Robert08010
@Robert08010 4 жыл бұрын
I guess because you are already disturbing it by moving the viewer, that's enough.
@brodysdaddy
@brodysdaddy 4 жыл бұрын
Techmoan: This device lets you see sound. Me after hearing voice actor clip: Never mind that shit, I gotta get a Datsun Z!!!!
@JVerschueren
@JVerschueren 4 жыл бұрын
Nice car, very rust prone, though. My cousin's one disintegrated after 7 years.
@RobCamp-rmc_0
@RobCamp-rmc_0 4 жыл бұрын
Give him a couple more years and, at two to three packs a day, you’d have the voice of someone who should be hawking a used C3 Vette instead
@Colt45hatchback
@Colt45hatchback 4 жыл бұрын
How I'd love to have a 240z
@RobCamp-rmc_0
@RobCamp-rmc_0 4 жыл бұрын
Notmah Cuppatea same, that’s been my dream car since I watched Let’s Make a Deal on the Game Show Network when I was in art school back in 2000. That was a prize on the reg on that show.
@ericn.wilson2345
@ericn.wilson2345 4 жыл бұрын
I believe that's Ernie Anderson, the ABC announcer whose job it was to convince you Saturday's Love Boat was a good idea.
@SlideRSB
@SlideRSB 4 жыл бұрын
I use a reader similar to this one quite regularly at the audio facility I work at. I'm an audio engineer and I specialize in archiving older media formats for preservation. Many times, I will get tapes and magnetic film with minimal or no documentation which makes playing them back properly difficult. The magnetic tape viewers I have at my disposal is a big help in that regard.
4 жыл бұрын
Now this is a gadget I never knew it existed. Thought this can't be achieved without electronics, yet here it is. Fascinating. Great video as always, thanks!
@jrmcferren
@jrmcferren 4 жыл бұрын
There was also a magnetic developer solution, this was commonly used in cut and splice video tape editing of the old 2-inch quad system.
@e_g4239
@e_g4239 4 жыл бұрын
Credit card thiefs use a liquid that dose the same to steal credit card data
@6or7breadsticks
@6or7breadsticks 4 жыл бұрын
The modern version will require always on internet and a subscription
@zybch
@zybch 4 жыл бұрын
@@sub-vibes Those films are a lot less sensitive, great for seeing where the magnets in your phone/ipad are, but no use for the tiny fields an audio tape contains. Still fun though, I've got several.
@rickt1866
@rickt1866 4 жыл бұрын
Magnetic Viewing Film - Magnet Field Viewer - Magnetic Pattern Viewer - 3X4 www.ebay.com/itm/Magnetic-Viewing-Film-Magnet-Field-Viewer-Magnetic-Pattern-Viewer-3X4/321293664571?hash=item4ace98413b:g:vo0AAOxyUrZSzKnn
@wwsvs
@wwsvs 4 жыл бұрын
Fantastic video as always! That tape of VO artists contains many who worked in animation. Danny Dark was Superman for Hanna Barabara's Super Friends and later the main voice of the NBC television network. Michael Bell was Zan from the same show. Bob Ridgley was Tarzan: Lord of the Jungle and Thundarr the Barbarian. Walker Edmiston was on many of the Sid and Marty Kroff shows and featured in Land of the Lost as Enik. Lennie Weinrib was Commissioner Gorden in the New Adventures of Bat Man for Filmation. Oh and Richard Baseheart and Rober Brown and Bob Holt and... I could go on and on as I see many more I recognize, but that is one really great tape!!! It would be fantastic to hear the full thing. Keep up the great work!
@SteveMallison
@SteveMallison 4 жыл бұрын
I've never seen a device like this before, but it takes me back to the early days of videotape editing. The tape was 2 inches wide and edits were made by physically cutting the tape using a specially designed editing block. Very fine magnetic particles in a volatile liquid were applied to the tape to make the "edit pulse" recorded on the control track visible so you knew where to make the cut, which had to be in the vertical interval. The two ends were joined with a special sticky tape. Thankfully electronic editing soon made this obsolete but it was still occasionally used to repair a damaged tape.
@LaurenWeinstein
@LaurenWeinstein 4 жыл бұрын
This liquid of course was/is "Magnasee" -- widely used throughout the industry for many years. A bit messy, and not exactly non-toxic, but it got the job done. Effective too, when you consider that fast cut shows like Laugh-In were manually edited this way on 2 inch Quad tape! A lot of work!
@cjay2
@cjay2 4 жыл бұрын
@@LaurenWeinstein Ah yes, Magnasee. I still have a sealed can of that stored away in a carton.
@mattikaki
@mattikaki 4 жыл бұрын
SteveMallison I used Ampex branded liquid when I had to see the video tape signal.
@rogerbarton497
@rogerbarton497 4 жыл бұрын
We used Magnasee extensively in the computer industry to check the inter-record gap on magnetic tapes.
@nickwallette6201
@nickwallette6201 4 жыл бұрын
You guys misspelled manganese. ;-D
@joeperez
@joeperez 4 жыл бұрын
I'd never seen this specific implementation. Very interesting. Back in the early era of 2" Quad video recording, a similar technology existed for use by video editors. At that time, videotape was spliced with a razor blade and adhesive tape, much like film or 1/4" audiotape. A liquid solution (Edivue was one common brand) was brushed onto the tape, and from this, the editor could see the location of the sync pulses and the vertical interval, allowing the cut to be made precisely on the interval, and maintaining the proper distance between adjacent frames so that the machine would play smoothly across the edit point. Personally, I don't miss those days.
@rams6702
@rams6702 4 жыл бұрын
god bless digital editing
@MrDuncl
@MrDuncl 4 жыл бұрын
I immediately assume that was what this was for. I knew about video editing by viewing and cutting the tape, as that was a schoolfriends Fathers job back in the 1970s working on BBC nature programmes. Occasionally we would see his name as "Videotape editor" in the credits.
@joeperez
@joeperez 4 жыл бұрын
The thing that puzzles me: With the Edivue liquid, you could still see the magnetic signature while you were lining up the tape in the cutting block and making the cut. With this device, you'd have to lift it up off of the tape before making the cut, and its presence would obscure your view of the cut-point mark on the block while it was still on. I'm struggling to envision how it would be possible to do an accurate cut with this device.
@KuraIthys
@KuraIthys 4 жыл бұрын
@@joeperez I rather doubt this specific device was meant for that purpose. I mean, it's own advertising seems to suggest it's primary purpose is for determining what kind of tape you're dealing with when faced with an unknown recording, so you can decide what kind of playback equipment to use.
@organfairy
@organfairy 4 жыл бұрын
Like in this video kzbin.info/www/bejne/bYrXnqp4bqmma7s
@KentWilke
@KentWilke 4 жыл бұрын
You may not know that these devices were used to identify corrupted data on the reel to reel data storage devices used with mainframe computers. One of my instructors back in the early 80's said they were able to identify the corrupted section of tape and restore the data so that it could once again be read. The data on the tape was stored in specific patterns that were visible under the viewer. They would literally read the data stream until they located the damage sections and then used some sort of magnetic encoder to restore the damaged patterns back to their original form. This technique was especially useful in computer installations used by the military and is the earliest form of magnetic data recovery.
@JaquesBobè
@JaquesBobè 4 жыл бұрын
This man spent *4 YEARS* to make a 9-minute video.
@joshuascholar3220
@joshuascholar3220 4 жыл бұрын
@@_Piers_ ha ha ha ha ha
@mntlmentos
@mntlmentos 4 жыл бұрын
Now THAT is some dedication.
@ligma3652
@ligma3652 4 жыл бұрын
I really liked techomoan's dedication to his videos.. #1 fan from The Philippines
@Fuzy2K
@Fuzy2K 4 жыл бұрын
But how long is that in centimeters of tape? :P
@buddyclem7328
@buddyclem7328 4 жыл бұрын
@@Fuzy2K That depends on the recording speed.
@CannonKnight
@CannonKnight 4 жыл бұрын
Not sure whose voice I like more: Techmoan's classy British accent or the deep, groovy voice on that Datsun Z advert. Tough call.
@doug834
@doug834 4 жыл бұрын
This is why I love this channel - I get to learn about things I never even knew existed. Well done as always.
@moofymoo
@moofymoo 4 жыл бұрын
6:30 - if Duke Nukem is telling that I need that car, I need it!
@grn1
@grn1 4 жыл бұрын
That's why it sounded familiar.
@CarlosPerezChavez
@CarlosPerezChavez 3 жыл бұрын
Come get some!
@bmhater1283
@bmhater1283 3 жыл бұрын
He sounds like the K-DST radio announcer from GTA SA lol
@IcecalGamer
@IcecalGamer 3 жыл бұрын
Thank you! I scrolled down to check the comets just for this!
@シロダサンダー
@シロダサンダー 3 жыл бұрын
Hail to the King, baby.
@blautens
@blautens 4 жыл бұрын
Pre video: I have absolutely no legitimate need for this. Post video: I must have one.
@targetdreamer257
@targetdreamer257 4 жыл бұрын
Exactly!
@Carstuff111
@Carstuff111 4 жыл бұрын
Yep! Hahahahaha!
@_framedlife
@_framedlife 3 жыл бұрын
I didn't knew this existed and it has almost no practice purpose for me, I must have one.
@rafchris
@rafchris 4 жыл бұрын
I think that is probably one of the most satisfying gadgets I have see for a while! Lovely box, 3M logo is a nice touch, chrome metal ring looks lovely, a portal into a magnetic world of wonder
@noisytim
@noisytim 4 жыл бұрын
Oh, that is nifty! That will make archiving unlabeled boxes of media a lot easier for me. Thanks for sharing this, Matt!
@SynaMax
@SynaMax 4 жыл бұрын
One of the names listed on the voice actor reel is Ernie Anderson, who was the voice of ABC back in the 80s and 90s, and was the father of famous director Paul Thomas Anderson.
@andrewaronson3364
@andrewaronson3364 4 жыл бұрын
I just came here from a Paul thomas Anderson movie here on youtube
@Roland_Tr909_Swing
@Roland_Tr909_Swing 4 жыл бұрын
This was useful for tape splicing in studios back in the day
@carpediem4887
@carpediem4887 4 жыл бұрын
Makes sense...so you can get a perfect splice
@babalon7778
@babalon7778 4 жыл бұрын
My dad should have had this for his job, then I would have gotten to use it, damn!
@mark314158
@mark314158 4 жыл бұрын
@ezzz9 It's the way everybody did it - splicing block, tape, razor, extreme patience...
@babalon7778
@babalon7778 4 жыл бұрын
@@mark314158 I actually enjoyed it because I was only 11, it was the best quality time I ever spent with my dad and it made me feel important, plus I just enjoyed the activity (It was for the biggest show on the planet that no longer exists). Does anyone else think it's fun?
@quantumbits
@quantumbits 4 жыл бұрын
@ezzz9 Yes we did !
@TheLtData
@TheLtData 4 жыл бұрын
This is why your channel is so good: you show us these interesting pieces of tech. Keep going, love your videos!
@soulchorea
@soulchorea 4 жыл бұрын
So fascinating! I love the actors tape; stuff like that makes me wish I was an archivist that could make sure little random things like this are preserved forever!
@tentotwo8290
@tentotwo8290 4 жыл бұрын
I googled a few of the names, I don't know why lol
@edwardbunker2846
@edwardbunker2846 4 жыл бұрын
Only one word: "Wowzer!" Great stuff. Love how you have blown the lid off of tape recording technology. I now have an even greater level of appreciation for my old school compact cassette tapes and your KZbin videos.
@donaldklopper
@donaldklopper 4 жыл бұрын
Nice stroke of marketing genius to have a magnetised view of the 3M logo in the little cradle.
@kona702
@kona702 3 жыл бұрын
This is one of the coolest things I've ever seen.
@tocsa120ls
@tocsa120ls 4 жыл бұрын
For anyone wondering, the green $5 magnetic field detectors don't work. Audio signal is way too weak for those.
@ramrod126
@ramrod126 4 жыл бұрын
That answers the question I was going to ask.
@lukiepoole6701
@lukiepoole6701 4 жыл бұрын
Use a super sensitive ferrocell. Just like this detector.
@manonthedollar
@manonthedollar 4 жыл бұрын
I love all those finishing touches -- the wooden box, the magnetic 3M logo, the overall solid construction. Man.
@dancooper6002
@dancooper6002 Жыл бұрын
They used to build quality, not just crap like now
@flynn8860
@flynn8860 4 жыл бұрын
I used one of these in the 70's to adjust the gap size on digital mag tape drives on a Honeywell Bull Gamma M40 ... good old days ;)
@MrWombatty
@MrWombatty 4 жыл бұрын
Probably just as hard to find one of these in good condition as finding a mint-condition Datsun 240/260Z!
@synthoelectro
@synthoelectro 3 жыл бұрын
My Father owned a 280ZX, what a car :D
@icychill105
@icychill105 4 жыл бұрын
this makes me wonder what the steel wire recorder looks like under the viewer
@mrmimeisfunny
@mrmimeisfunny 4 жыл бұрын
Considering steel wire needs speeds so fast, I don't think it will be easy to get a clear signal.
@TheHitmanAgent
@TheHitmanAgent 4 жыл бұрын
@@mrmimeisfunny ...and considering it is very-very thin, it would be impossible. The particles in the viewer aren't that fine to show the magnetization
@benjammin2020
@benjammin2020 4 жыл бұрын
@@TheHitmanAgent Its that, probably also just the strenth of the magnetic fields. I would imagine the steel wire has very strong signals compared to a tape.
@fen7662
@fen7662 4 жыл бұрын
@@mrmimeisfunny Well, at 24 in/s, it's only going to be a 3 1/2 times less dense than a reel-to-reel 7 1/2 in/s speed or less than 8x less dense than a standard cassette. It probably would be visible enough since it appears to only struggle with more dense magnetization. The thinness of the wire would most likely be the only issue. I feel like the strength of the magnetization could certainly make or break whether or not it's visible... but who really knows until it's tested.
@Christopher-N
@Christopher-N 4 жыл бұрын
I concur with the replies. Based on what I've seen on _The Secret Life of Machines_ series, I have my doubts this would display a wire recording; the medium would be simply too small.
@RicHollandUK
@RicHollandUK 4 жыл бұрын
A good find Techmoan. We had one of these in my studio days in London in the 1960s/early 1970s. The 8 tracks on a 1-inch multi-track tape could be viewed quite clearly with it.
@Jingleboy14
@Jingleboy14 4 жыл бұрын
Really cool little device. Was anxiously waiting to see if you'd try it on a video tape - and you delivered!
@thomask4836
@thomask4836 3 жыл бұрын
I am an audio buff from the 1960's and never heard of this but it is fascinating! Like every other audio gadget and toy (including pocket sized stylus microscopes, etc) if I would have known it existed, I would have been playing with it on my Roberts 770 XSS! Thank You So Very Much! I really enjoyed this video and I am grateful for your enthusiasm and the time and effort you put in to share this!
@Trance88
@Trance88 4 жыл бұрын
What a simple yet incredible device! It's interesting how linear analog recordings on tape sort of resemble barcodes.
@alberti.2334
@alberti.2334 4 жыл бұрын
you have illuminated my curiosity with this thing. thanks for showing something interesting that I didn't even know exists. I hope you continue to show interesting things like this in the future
@sixstar2067
@sixstar2067 4 жыл бұрын
As a "Z" car and classic Datsun fan I really enjoyed the little snippet of the old Datsun ad you played. I get excited every time I see a new Techmoan video, your work is incredibly high-quality and packed with information. Thanks for everything you do. :)
@jimpowell8574
@jimpowell8574 4 жыл бұрын
I have looked for one of these for years. I used one in the early 1970's at Goddard Space Flight Center in Greenbelt, MD (USA). We used it to splice damaged data tapes as well as audio recordings of tests. It was very cool.
@ericjenkins2737
@ericjenkins2737 4 жыл бұрын
I'm only a minute in and it's already fascinating.
@polygondwanaland8390
@polygondwanaland8390 4 жыл бұрын
This is extremely cool and entirely useless in the modern age. Perfect Techmoan video!
@drdysl3xia795
@drdysl3xia795 4 жыл бұрын
I can't believe we can see what is on the tape. Holly crap..
@davismv
@davismv 4 жыл бұрын
Yet another amazing item on your channel being reviewed, the vintage tech that you show here is absolutely astounding.
@reagandow850
@reagandow850 4 жыл бұрын
Wow. This is real, really neat. I never had any idea this was a thing. Thank you for showing us this really neat piece of history.
@MaverickGrabber71
@MaverickGrabber71 4 жыл бұрын
That is amazing! It is really cool to see how the tracks are actually laid down on the tape and really helps nail down my understanding of how it works.
@davidbono9359
@davidbono9359 4 жыл бұрын
When I was in college, I had a summer internship at a 3M plant that manufactured floppy disks. This video reminded me of using "magnetic developer", which was a liquid you could spray on magnetic media to see the recorded patterns. It was basically very fine iron particles suspended in liquid (maybe alcohol) that evaporated after the particles aligned themselves with the magnetic field on the media. Similar concept, but I've never seen one of these devices before!
@Techmoan
@Techmoan 4 жыл бұрын
They mentioned something along these lines in the patent: _Heretofore magnetic signals recorded on magnetic tape have in a sense been rendered visible by smearing finely divided ferromagnetic material over the tape and allowing it to migrate to points of maximum magnetic flux. Besides being slow and messy this procedure involved the greater disadvantage that thorough cleaning of the recording medium was required to prevent the applied ferromagnetic material from supplying false signals. This procedure is treated in the television industry as unacceptable for the splicing of magnetic recording tape and splicing has instead been confined to tape areas in which the picture is blanked out._
@davidbono9359
@davidbono9359 4 жыл бұрын
@@Techmoan That's cool! I guess it makes sense that the guys who invented the viewer would have been aware of the magnetic developer method. Apparently you can still buy magnetic developer liquid today - it might be fun to do a follow-up video that compares the magnetic developer with the viewer (hint, hint). Although, as the patent application says, I wouldn't use it on any media you wanted keep. I don't know if the developer damages the media or not, but it does leave behind a fine, powdery residue that might be tricky to clean off, and I don't think you'd want to run the treated media over a playback head.
@Techmoan
@Techmoan 4 жыл бұрын
It’s looking like I’ll have to do a follow up where I demonstrate the things it won’t read and which suggested alternatives also don’t work. e.g. No ‘magnetic sheets’ can’t display the same patterns on a tape, No the viewer can’t read 8” floppy discs, no it can’t read (insert anything here with a greater track or data density than a 8-track tape). That sounds like a pretty negative video though. I prefer showing things working - the things that don’t work are usually intentionally omitted.
@davidbono9359
@davidbono9359 4 жыл бұрын
​@@Techmoan I think the magnetic developer / Magnasee should work on the same media that the viewer does. The developer should also work on floppy disks, if it's the same stuff that was used at 3M. It should at least show the locations of the individual tracks on a 5-1/4" floppy disk (but don't expect to see individual 0/1 bits). This also makes me wonder if one could make a "poor man's" version of the viewer by putting a bit of the developer solution in between two thin pieces of glass (like microscope slides)...
@joehannigan9788
@joehannigan9788 4 жыл бұрын
This is fantastic; I get analog tapes to transfer all the time, and it's almost always a guessing game as to which format has been used. Most consumers "back in the day" just didn't know enough to at least mark the box. Now I can "Look" at the tape itself and know ahead of time. Thanks for posting!
@dingdongbells3314
@dingdongbells3314 4 жыл бұрын
1:34 That has to be the coolest sounding thing I've heard in a while.
@geoffmolyneux9173
@geoffmolyneux9173 4 жыл бұрын
I saw one of those magnetic 3M readers in about 1986. The person worked for a company that made credit card magnetic strip readers. He showed me about similiar items that you showed. Thanks for the memory refresh.
@madfinntech
@madfinntech 4 жыл бұрын
I love how it comes with a nice wooden box. Today it would arrive in vacuum package you need scissors to open.
@SimonSideburns
@SimonSideburns 4 жыл бұрын
And when you buy scissors, guess what, they often come in vacuum packaging or shut tight with cable ties to prevent them from being opened in the shop, and most often you need something like a pair of scissors to get the packaging open.
@oliverer3
@oliverer3 4 жыл бұрын
If you buy nice or delicate tools it's still common that they come in nice boxes but for cheap items it's just unnecessary
@mick2d2
@mick2d2 4 жыл бұрын
And also with a space to put your fingers above and below it, to be able to pick it up!
@kjell159
@kjell159 4 жыл бұрын
@@SimonSideburns Who 'came' first, the chicken or the egg? The egg because it got 'laid' by the chicken.
@rawdez_
@rawdez_ 4 жыл бұрын
7:30 looks like chipboard/LDF
@Slipping_thru_the_Seams
@Slipping_thru_the_Seams Жыл бұрын
Technology Connections sent me here. very cool stuff! thanks for sharing!
@sircompo
@sircompo 4 жыл бұрын
I've been meaning to buy some 'Magnetic Viewing Film' for a while. Just ordered some from Amazon after watching this (only £4.85). It'll be interesting to see if it has the same resolution. I have a feeling this might be one of your videos that goes viral; an absolutely fascinating little gadget.
@sircompo
@sircompo 4 жыл бұрын
Alas, regarding the Magnetic film from Amazon, the answer is a resounding no. It's fantastic to have, but seems to have been designed for much stronger Magnetic fields.
@Seiskid
@Seiskid 4 жыл бұрын
Let us all know if yours works as well as the 3M one.
@GlutenEruption
@GlutenEruption 4 жыл бұрын
I have some and I can definitely make out the stripe on credit cards etc so it should work okay
@sixstringedthing
@sixstringedthing 4 жыл бұрын
I was under the impression that magnetic film is really intended to view the poles/field lines of actual magnets or strongly magnetic material, so I can't imagine that the resolution would be very good when used on tape.
@snik2pl
@snik2pl 4 жыл бұрын
No, i just checked
@protonpillpopper1
@protonpillpopper1 4 жыл бұрын
9 minutes watching a video on an obscure little device I've never heard of and will probably never stumble across in the wild. That's what I love about this channel. As always...thanks for sharing.
@francisgomes7203
@francisgomes7203 3 жыл бұрын
Really, these were some mind-blowing inventions in those years. How much time and dedication was put into these devices. 👍
@DanielisAwesome52
@DanielisAwesome52 4 жыл бұрын
I was born just as cassettes were on the way out, and am only now realizing exactly why they are called "tracks"
@dopiaza2006
@dopiaza2006 3 жыл бұрын
Not totally sure but I think tracks came from records not tapes
@rickfox3253
@rickfox3253 4 жыл бұрын
Hey. Tom Bosley... AKA Howard Cunningham from Happy Days is on the voice actors tape.
@uselessDM
@uselessDM 4 жыл бұрын
Now that's a voice I wanna buy a car from.
@carpediem4887
@carpediem4887 4 жыл бұрын
Everyone's favorite dad
@PurpleTT99
@PurpleTT99 4 жыл бұрын
Aaargh I was convinced I was the only one who'd spot that. Fair play, Rick, well done!
@BenHeckHacks
@BenHeckHacks 4 жыл бұрын
As is Jack Angel who has voice work for.... Like everything!
@ChristopherSobieniak
@ChristopherSobieniak 4 жыл бұрын
@@BenHeckHacks There's certainly a few familiar names on here if you've seen anything they've done before.
@johnwerner4925
@johnwerner4925 4 жыл бұрын
Kudos to T for revealing something I never knew existed in the audio world. I've read audio magazines since 1972. At that time reel to reel was still quite a force in audio equipment for the common man. Actually my first audio mag was a 1972 Tape Buyer's Guide published b Stereo Review. I was a young audio immersed person who had just got my first Wollensak by 3M 4-track reel to reel. In all the years since I've continued to read audio magazines and I've never heard or seen this unique gadget. Good detective work.
@devojane
@devojane 4 жыл бұрын
I really want to hear that whole actor demo reel. Those guys' voices were all over cartoons and tv in the 70s and 80s. Lennie Weinrib was on a lot of Sid & Marty Krofft shows. Michael Bell shouted "Yo Joe” on the GI Joe opening (not sure about Action Team) and also said "butter" in the Parkay margarine ads. You gotta upload that whole tape!!!
@ChristopherSobieniak
@ChristopherSobieniak 4 жыл бұрын
That would be an interesting tape to listen to!
@ChristopherSobieniak
@ChristopherSobieniak 4 жыл бұрын
@TC Fenstermaker Classy, classy man!
@DominicMassarotti
@DominicMassarotti 3 жыл бұрын
Tom Bosley on there as well, of Happy Days fame.
@redshop1234
@redshop1234 4 жыл бұрын
Thanks for another fine video. Interesting, informative, and fun. Production values are outstanding as always.
@victorsixtythree
@victorsixtythree 4 жыл бұрын
6:36 - I see a "Tom Bosley" listed on that voice actors tape. I wonder if it's the same one that played Mr. Cunningham on Happy Days in the 1970's.
@TheGadgetPanda
@TheGadgetPanda 4 жыл бұрын
Almost certainly. And I think we need to hear Mr C reading some cheesy 70s ad copy ASAP. Please, Mr Techmoan, make it happen!
@anonb4632
@anonb4632 4 жыл бұрын
He also turned up on Murder She Wrote as the local sheriff and the Father Dowling Mysteries I think.
@marycarnival
@marycarnival 4 жыл бұрын
I want to hear this entire tape. Reminds me of 'Toast of London'...imagine Danny Dark saying, "I can hear you, Clem Fandango!".
@handlesarefeckinstupid
@handlesarefeckinstupid 4 жыл бұрын
I remember him from Charlie's Angels mostly. Happy days as well.
@victorsixtythree
@victorsixtythree 4 жыл бұрын
@@handlesarefeckinstupid I could be mistaken but I think you're mixing things up. The actor Tom Bosley played Richie's father on Happy Days. On Charlie's Angels the voice of Charlie (we never see him) was played by John Forsythe (maybe best know as Blake Carrington on "Dynasty") but there WAS a character named "Bosley" on Charlie's Angels, played by David Doyle.
@martinthompson2584
@martinthompson2584 4 жыл бұрын
This brings back memories. My dad had one at work (radio station) which I played with when I visited.
@magreger
@magreger 4 жыл бұрын
When I read the title and saw the thumbnail I was expecting some kind of visualizer that would move to the music. For the first couple minutes of video I was waiting to see if you'd hold the viewer up to the moving tape to get a visualization. But now that I understand what it's used for I'd bet it wouldn't show much of anything against a moving tape. Interesting device none the less.
@darinb.3273
@darinb.3273 4 жыл бұрын
Agreed I definitely think the fluid would be way too slow to react that quickly
@ronniepirtlejr2606
@ronniepirtlejr2606 4 жыл бұрын
My mom used to have a Datsun 280ZX in 1983-84. I thought it was a pretty sweet ride! She used to love listening the awesome sound system with it cranked up, playing., Loverboy...* turn me loose* Or Rod Stewart....* passion* I played Queen album *Another One Bites the Dust* We drove through the Cajon Pass in California one time while the mountains were on fire & the firefighters were waving people through on the interstate. The fire was so hot you couldn't touch the windows. The Datsun 280ZX👍
@Sheppards1984
@Sheppards1984 4 жыл бұрын
Would have loved this back in the C64 tape days...
@Christopher-N
@Christopher-N 4 жыл бұрын
I was just thinking that: data tapes should display similar to audio tapes, just in mono.
@SomePotato
@SomePotato 4 жыл бұрын
Or some old floppies! Tracks on the common formats were 0.33mm or 0.115mm wide. Those should be visible.
@Christopher-N
@Christopher-N 4 жыл бұрын
@@SomePotato: This actually runs into the topic of copy protection. A fascinating suggestion, *Some Potato,* well played. Here's *LGR* to explain (EDIT: I was looking for the video that was more specifically about floppy copy protection; I'll apply the correct link and remove this 'Edit' when I find it): kzbin.info/www/bejne/fpuok6ODnM5_bbc
@rudolfst
@rudolfst 4 жыл бұрын
In the mid seventies I was a volunteer at a (dutch) hospitalradiostation. Somebody once took such a divice into the studio. So this video is a trip down memory lane; I very much enjoyed it! 😀
@freddibnah1830
@freddibnah1830 4 жыл бұрын
my wife watched this over my shoulder, she shook her head and walked away
@threephase69
@threephase69 4 жыл бұрын
She was expecting to see WORDS and MUSIC NOTES 🎶
@soritessoreites1207
@soritessoreites1207 4 жыл бұрын
show her the credit card part
@sablatnic8030
@sablatnic8030 4 жыл бұрын
@@soritessoreites1207 :-D
@Robert08010
@Robert08010 4 жыл бұрын
That's a completely different kind of tech moan. That a recognition of what is inevitable.
@Robert08010
@Robert08010 4 жыл бұрын
@@threephase69 Singer's mouth shapes.
@followthetrawler
@followthetrawler 4 жыл бұрын
As a Computer Field Service Engineer we used to use similar devices to check and adjust head alignment on vacuum column tape decks. Important job to get right as if you just slapped a new head into a deck it probably wouldnt be able to read older tapes - pretty important for getting data from backup tapes!
@darkdeity2012
@darkdeity2012 4 жыл бұрын
Great, now I want a magnetic tape viewer and a Datsun Z 😉
@Tardisntimbits
@Tardisntimbits 4 жыл бұрын
That's so neat! I love these interesting little devices. I'm glad you managed to track one down!
@lachlan1971
@lachlan1971 4 жыл бұрын
Ha ha, I remember those "Top of the Pops" albums. They were cheap albums with chart songs played by other musicians to cut down on the royalties. My folks had loads of them on vinyl.
@MrDuncl
@MrDuncl 4 жыл бұрын
If you were lucky they might be played by some unknown musician called Reginald Dwight
@owensmith7530
@owensmith7530 4 жыл бұрын
Or Larry Lurex
@TheSquaredM
@TheSquaredM 4 жыл бұрын
This has to be one of the most interesting videos that you have made! Thanks for showing us this device!
@fen7662
@fen7662 4 жыл бұрын
Nice tiny Magna Doodle. But seriously, this is pretty neat.
@Christopher-N
@Christopher-N 4 жыл бұрын
_Magna Doodle_ is quite similar in function, but a different toy from _Wooly Willy._ I had both toys when I was little.
@ornleifs
@ornleifs 4 жыл бұрын
The stuff you show on this channel is continually surprising. Before I started to watch you channel I had absolutely no idea of most of these products.
@cosmicjenny4508
@cosmicjenny4508 4 жыл бұрын
I just love magnets, man. That’s so cool!
@Mikej1592
@Mikej1592 4 жыл бұрын
You never cease to amaze me with fantastic bits of technology I never knew existed, and teach me things about things I knew existed but never knew much about them. always enjoy your videos.
@Tony32
@Tony32 4 жыл бұрын
6:30 That sounds eerily similar to those Matthew Mcconaughey weird car commercials.
@seanperone449
@seanperone449 4 жыл бұрын
I guess time really is a flat circle.
@buddyclem7328
@buddyclem7328 4 жыл бұрын
I like cars with _rich Corinthian leather._
@justpassnthru
@justpassnthru 4 жыл бұрын
I was thinking Frank Zappa
@dansv1
@dansv1 4 жыл бұрын
I was thinking Ken Nordine.
@MaximumJoy
@MaximumJoy 4 жыл бұрын
@@justpassnthru i got Zappa vibes too
@Metalvain4
@Metalvain4 Жыл бұрын
This. is. so. cool. Would have never even thought about something like this. Thank you!
@BollingHolt
@BollingHolt 4 жыл бұрын
6:39 The Datsun Z! Sweet! My first car was a 280Z, and I'd never heard that advertisement before.
@andrewgwilliam4831
@andrewgwilliam4831 4 жыл бұрын
Might've been a made-up ad, so that they didn't have to get clearance?
@BollingHolt
@BollingHolt 4 жыл бұрын
@@andrewgwilliam4831 Who knows lol. I still liked it 😎
@fordxbgtfalcon
@fordxbgtfalcon 4 жыл бұрын
Mine was a 73 240z
@leanncrowephoto
@leanncrowephoto 4 жыл бұрын
I'm in St. Paul, Minnesota and old 3M stuff is all over the place. I will keep my eye out for one of these! Thanks for the video!
@shona-sof
@shona-sof 4 жыл бұрын
I'd love to see this sowing the data layout on 3.5 & 5.25 discs, and maybe even an extracted hard disk drive data platter.
@KuraIthys
@KuraIthys 4 жыл бұрын
I'd expect it would have to be a VERY old hard drive to show anything much on a device like this. Even a drive from 2000 would likely be storing on the order of 1-2 gigabytes of data on a single side of a 3.5 inch hard drive platter. That's 2 billion bytes (hard drives for whatever reason tended to use the metric 10^3 definition rather than binary 2^10 that software often defines kilo/mega/giga as) That's 16 billion bits (ignoring whatever redundancy and formatting is involved to make it reliably readable) stored on at best 9.6 square inches. (less in fact, given the spindle in the centre). That works out to about 1.66 billion bits per square inch, or very roughly 40,000 bits per linear inch. the window in that viewer is 3 cm, which is slightly more than 1 inch... So you'd somehow have to be able to see 40,000 individual dots in that space. A modern drive is an order of magnitude worse, and would show at least 40,000,000 dots in that space. If this thing can show a pattern at that kind of density, I'd be highly surprised... A floppy disk storing a few hundred kilobytes to 1.44 megabytes though? That might just show a visible pattern...
@TimTaylor99
@TimTaylor99 2 жыл бұрын
Your channel is nothing but pure gold! Love it 🥳
@JamilLeslie
@JamilLeslie 4 жыл бұрын
Datsun Z!!! Yea lol, it’s legendary for sure now.
@KallePihlajasaari
@KallePihlajasaari 4 жыл бұрын
Lovely video. In my youth I discovered it was possible to view the magnetic tracks on bank cards (and even decode a few characters under the microscope) by dusting them with black photocopier toner, tapping the excess off carefully and then transferring it with tape to a sheet of white paper. Later in life (20 years ago) I used the toner transfer technique to determine the amount of data on the magnetic track of a job card for a car assembly plant that was contemplating changing over from the magnetic tracks to bar-codes and wanted to know how much data the old production software actually was using, turns out it was just the job number so the bar-code upgrade was approved. They had very rudimentary documentation of the data on the magnetic track and the reliability and maintenance cost on the old custom readers was becoming a concern.
@wktodd
@wktodd 4 жыл бұрын
First time I saw one of those was in the hands of a computer engineer, who was checking the tape from a Honeywell mainframe back in 1968.
@TheBananaPlug
@TheBananaPlug 4 жыл бұрын
We used those when checking mag. stripes on credit cards and tickets that used mag. stripes back in the 80's. Forgotten about them completely. Thanks for the memory.
@ross-carlson
@ross-carlson 4 жыл бұрын
@6:30 As my parents owned a Datsun 280z when I was a kid and I owned a Nissan 350z as an adult I can confirm he is absolutely right!
@AfferbeckBeats
@AfferbeckBeats 4 жыл бұрын
It's sad how Nissan has gone in the past decade or so. The GT-R and 370Z are the only desireable things they make, and they're ancient now. Despite being around so long, I've never seen an R35 GT-R in real life because they're 200k+ here, and 370Zs are a bit chunky and tasteless driven by real estate agents.
@AlejandroJulien
@AlejandroJulien 4 жыл бұрын
And when I think that Techmoan can't get any geekier, you surprise me once and again. And I say this in the best way. You're amazing!
@Taped0uT1
@Taped0uT1 4 жыл бұрын
This is one of those things you see and think. "I bet I can get some modern version for cheap or something used cheap." NOPE
@IkeFoxbrush
@IkeFoxbrush 4 жыл бұрын
The modern version shown at the end of the video is considerably cheaper than the original was when it was released, though.
@als_pals
@als_pals 3 жыл бұрын
I wonder if standard magnetic viewing film would work for this?
@eugenesnell6600
@eugenesnell6600 4 жыл бұрын
Of all the things I have seen you review, this was probably the most fascinating one of them! Almost useless in this day and age but still fascinating! I'm old enough to remember most of the items you've shown in one iteration or another... But this is one I would really like to have in my collection.
@carymundy
@carymundy 4 жыл бұрын
I believe these were originally used to assist in cutting and splicing the 2 inch quadruplex video tape that was used in the 1950s all the through early 80s. One could achieve a jitter-free physical (!) splice if the tape was brushed with a ferrous oxide fluid to “develop” and view the magnetic pattern on the tape. This allowed the editor to make a precise cut at the blanking interval used for NTSC. Of course brushing anything on the tape caused it’s own problems, and back then electronic editing was unknown. 3M was the dominant supplier of quad tape. This was their solution to customer’s editing problems.
@andrewince8824
@andrewince8824 3 жыл бұрын
That's incredible. I've often wondered how audio appears on a tape. We all know that the dimensions of a groove in a record dictate the sound but magnetic tape is something we can't really see.
@cmb1972
@cmb1972 4 жыл бұрын
"A Datsun Z"
@david-spliso1928
@david-spliso1928 4 жыл бұрын
Excellent car. Nissan knows best.
@buddyclem7328
@buddyclem7328 4 жыл бұрын
The Z was an awesome car!
@Rutherford_Inchworm_III
@Rutherford_Inchworm_III 4 жыл бұрын
Jaguar? Nah. Ferrari convertible? Still had some doubts. Now... with my Datsun Z, I finally know I have *everything* other people wish for!
@whendeathdeclareswar7458
@whendeathdeclareswar7458 4 жыл бұрын
C M B 100k car today.
@steffen2165
@steffen2165 4 жыл бұрын
@@whendeathdeclareswar7458 no it's not haha
@JB-ym4up
@JB-ym4up 4 жыл бұрын
My father had a similar device at work when I was young, 1976 iirc. It was for manually checking bit errors on magnetic data tapes, yes the density was that low.
@TransmitHim
@TransmitHim 3 жыл бұрын
This device is oddly fascinating, especially using it to see the data on the store card.
@fizzyplazmuh9024
@fizzyplazmuh9024 4 жыл бұрын
Thank you for this exquisite toy! The current green ones they make for students to toy with are too crude compared to this one. I work with ferrofluids so a little sift and liquid settling will give me just the right fineness of grain and then dehydrate with alcohol and hot air. Mix the resulting powder in baby oil place on polished steel and apply a thin plastic film on top or a microscope slide cover slip. Looks like there may be a polarized filter on top for enhancing the appearance of the grains. Real slick production quality too.
@lemn8
@lemn8 4 жыл бұрын
What the... I never knew about the existence of such a device. And I expected to see some sort of a sinus not this kind of digital patterns. Really interesting thanks.
@risvegliato
@risvegliato 4 жыл бұрын
It is a type of sinusoidal analogue wave, only it is in the 'Z' direction, i.e in the direction you are looking, rather than left-right or up-down. Hope that makes sense?
@polygondwanaland8390
@polygondwanaland8390 4 жыл бұрын
@@risvegliato like when you're looking at confidence interval bars, but you can visualize it as a bell curve being seen from the top?
@risvegliato
@risvegliato 4 жыл бұрын
@@polygondwanaland8390 Yes indeed! And that is very pertinent to a UKAS inspection I have coming up at work which involves 95% confidence intervals, error bars and bell curves... how strange you should bring it up!
@polygondwanaland8390
@polygondwanaland8390 4 жыл бұрын
@@risvegliato I'm in quantitative analysis in school right now and am following election polling in my free time. Lots of stats :)
@migalito1955
@migalito1955 4 жыл бұрын
That was a neat product to showcase and perhaps one of my favorites.
@Tom5TomEntertainment
@Tom5TomEntertainment 4 жыл бұрын
Now when someone says they can see sound, you don't have to assume drugs are involved.
@andrewgwilliam4831
@andrewgwilliam4831 4 жыл бұрын
Or a head injury. 😀
@Patrick_AUBRY
@Patrick_AUBRY 4 жыл бұрын
Everything is frequencies so... Some have brain confusing frequency bands ;-)
@RedmarKerkhof
@RedmarKerkhof 4 жыл бұрын
One time I had too many edibles, listening to music, and I was flying through a giant hallway in which the pillars were made of the music.
@razgar02
@razgar02 4 жыл бұрын
Or synaesthesia.
@D8W2P4
@D8W2P4 4 жыл бұрын
Or REALLY loud sounds.
@timstamps5281
@timstamps5281 6 ай бұрын
A similar version of this device was used to physically splice 2” Quadruplex videotape. They used it to make quick cuts for the Laugh-In series. Their cuts were so short, they couldn’t do it with an electronic editor which involved copying scenes from one tape to another, so they opted to physically splice the tape. Those tapes couldn’t be erased and reused, so they wound up being saved and were remastered in recent years, so the entire run of the Laugh-In series is available on several platforms (and TV stations like Catchy TV).
@kevinsong712
@kevinsong712 4 жыл бұрын
Was hoping that you'd drag the viewer along the tape 😂
@joermnyc
@joermnyc 4 жыл бұрын
Kevin Song might damage the tape as it’s a block of metal. Notice the advertisement photos showing how you’re supposed to place the tape on the white cushion inside the case, then put the reader on top.
@kevinsong712
@kevinsong712 4 жыл бұрын
@@joermnyc thanks man didn't realize that
@nickwallette6201
@nickwallette6201 4 жыл бұрын
It also takes a moment to settle, so it wouldn’t likely show anything useful.
@Taped0uT1
@Taped0uT1 4 жыл бұрын
@@nickwallette6201 Absolutely. But could be pretty cool in stop motion animation.
@KallePihlajasaari
@KallePihlajasaari 4 жыл бұрын
@@Taped0uT1 That would look awesome. Split screen with an oscilloscope view of the track being played would be even better.
@shinypb
@shinypb 4 жыл бұрын
This was a particularly delightful video! Thanks so much for making these, Mat.
@lazycalm41
@lazycalm41 4 жыл бұрын
how on earth do you find out about this stuff Techmoan? I never knew such a thing existed. Fascinating!
@pummisher1186
@pummisher1186 4 жыл бұрын
It's all part of growing up and being British
@lazycalm41
@lazycalm41 4 жыл бұрын
@@pummisher1186 No idea what that is supposed to mean?
@pummisher1186
@pummisher1186 4 жыл бұрын
@@lazycalm41 It's a Monty Python joke. kzbin.info/www/bejne/aJjQY2yNj9V1gMU
@awdadwadwad1723
@awdadwadwad1723 4 жыл бұрын
At this point people just writing him ideas up
@wardrich
@wardrich 4 жыл бұрын
1:01 actually, I'm really glad you answered that. When I saw the bit in the device, my first question was actually how long of a sample that was.
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