MAGNETIC CORES - PART I - PROPERTIES

[@beingatliberty]

these old military films are clear and descriptive in ways that modern guides could learn from.

[@ramblinevilmushroom]

We used to fund this, instead of requiring that it be profitable in itself to exist.

[@shashvatshukla]

This is such a good explanation. Quantum computers are discussed like this today :))

[@sagittariuslibra6824]

I’ve listened to the podcast 13 minutes to the moon and was looking for a simple explanation of rope core memory. This explanation is so structured and comprehensible that the technology it explains can really shine!

[@BenRush]

Same!

[@MadScientist267]

Rope is read only. This is writable.

[@ibanreyes8]

BEST EXPLANATION. ITS A 10 OUT OF 10

[@robertlee5456]

Meanwhile, in Electrical Engineering 101 -- the professor throws up a picture of a rectangular B-H curve, mumbles something about how "this is how magnetic materials respond" and then moves on to the next topic in less than 3 minutes. Students shrug, and are then mystified by the black magic that is applied magnetics when encountering them in real life.

[@gerryjamesedwards1227]

When he says that the cores will keep their residual magnetism 'indefinitely', he's not joking! Curious Marc and his team can read data from core memory some 50-60 years after it was written. Amazing stuff, especially when you see the tiny little cores interlaced with all these tiny wires that were all woven by hand.

[@BarrettLewis-o2p]

This is NOT what is shown in Curious Marc's video. This is a writable memory and all that is shown is in service of how to write it. The rope memory data is stored permanently in how the wires are routed in and out of the cores. Those rope memories are readable not because the magnetism survived, but because the wires still go through the same cores they did 60 years ago.

[@jnewbon00]

better explanation than ive ever heard in my life im 30 !!!

[@adhil8918]

😁

[@danielmonostori3480]

How life's been treatin ya at 41

[@jnewbon00]

Reasonably well for a slave of the modern economy.

[@Sixalienasa]

How could anybody with a desire to learn not like this video?????????????????????????????????????????????????????????????????

[@j78513]

educational videos so good, it can teach a sleep deprived teenager in AIT.

[@ZackLondres]

By the beard.... they knew how to explain complex concepts back then. how did we forget how to do this? No wonder all the engineers trained back in those days are so amazing. they had better teachers.

[@j78513]

I think it was the technical culture back then. Most engineers of that time probably got their first taste of technology on a farm, and then during the war had to be taught in large numbers very quickly ever more complex tech as it emerged. What your seeing is the people who learned both theory and application on a intuitive level. To be fair, some youtubers are getting to this point today, they just don't have a military budget and a battle hardened (look at the stripes on the cuff, each on is 6 months deployment) Sargent for lecturer.

[@THEMFORMATION]

They didnt. Its on purpose so people dont realize our universe is energetically interconnected and still very much alive.

[@MadScientist267]

1. Film is expensive. 2. Monetization.

[@TheLocoUnion]

Love the heroic music!!!!

[@LydellAaron]

6:30 couldn't have been said better - cause and effect. Huge epiphany 17:00 IS the entanglement! Those two cores are entangled, separating them (if you could separate them) is the essence of the phenomena. We have been covering it as an undesireable property all this time. Exciting.

[@hotbird3]

Wow,,, clear and precise information

[@kreynolds1123]

LAMO: Opening Line: Modern Data processing systems like these...... I love it.

[@PvPigCreations]

i got it at first time! Now I'm gonna make one too, cause I can't make a silicon transistor

[@eddiekulp1241]

More turns of coil and more voltage gets the job done .

[@simpleau2]

They never bothered to explain all of this in school, it's a pain trying to read older electronic schematics.

[@greenthizzle4]

simpleau2 this is ancient technology that will likely never be used again, that's why

[@manueljonathancaceres1265]

​@@greenthizzle4 Maybe. But as a basic knowledge, it´s fantastic.

[@Khwartz]

A Teaching is As Clear the Understanding of the Teacher is Clear and has the INTENTION to Communicate this Understanding. Now You may deduce the reasons why the present teachings are not so Understable... ^_^

[@EnergyCourtier]

Love these videos. Subscribed.

[@RobbieBlue]

Great stuff

[@TB-jl9fr]

Wild times using chokes as information storage.

[@daoyuzhang1648]

The displayed flux and current relation is for the current of electrons (from negative to positive), in stead of the electric current(from positive to negative).

[@lucaseaston]

I thought it looked back to front compared to what I know (Right hand rule).

[@R0WD1E]

more than my text book can explain....

[@Yorumcu63]

Thank you for video

[@rhondadoerfler6490]

I am glad my guys didn't add a "dot side" but sided instead with over-loading and blowing our little dot and getting that out of the way so he could maintain our attention for 40 more minutes instead of losing us to taking a powder in the parking lot.

[@onlyeyeno]

Let me begin by expressing my sincere gratitude to You for "eternizing" these films and for sharing them with us. How ever I have a question regarding what "Sergeant" is saying. After just having said: "A non-dot input sets the first core to a 1(one). Nothing happens to the second core". (@20:56) He continues to say: " Power flowing in this direction sets a core to 0(zero), but that's where this core is Already".. Now while that is true and correct, it seems a bit odd that he at least doesn't add that EVEN if the second core was a 1(one) it STILL would not change TO a 0(zero) due to the fact that the "unidirectional device" would NOT ALLOW any current to flow in that direction !?? Since the "unidirectional device" TOTALLY disables the second core to "receive input" on it's "Dot-Input" [[I.e. setting it to 0]] regardless of what the previous core is "doing".... Or am I misunderstanding how this works ?? Best regards.

[@AliasUndercover]

Thousands...almost makes you wonder what you could do with so little.

[@tech_sol]

❤

[@aes9217]

Weren't there any D-flip flops back then?

[@sludge-en9on]

so cool

[@cult-of-sporque]

I'm just sitting here with my mind blown over bit shifts being literal electrical pulses.

[@Fooballium]

Why is the flux direction wrong in the video? Was something changed? Basic right hand rule...

[@aaronjennings8385]

So that's a bit. I wondered what they looked like.

[@421sap]

In Father and my Husband Jesus' Name, Amen ✝️✨

[@adhil8918]

Thanks

[@davekendall9749]

Imagine flying to the moon and back on this technology. No magnets on board please! If you want to return. :-(

[@hobbes5043]

It is unbelievable

[@dumle29]

11:53 i see a logo, but i cannot for the life of me remember which logo. Or am i seeing things?

[@soufianelezan]

and then the transistor, so we trow all this knowledge away.

[@donaldleecook009]

If you dismiss the dot concept and rely on lenz-law at 21:02, the bit will never shift because there is not a change in a magnetic field. If I am wrong, help me understand without using this added dot concept because it can easily be arranged differently and not give the same answer.

[@classic5005]

القوة القسرية coercive force

[@timrohrbach1801]

Magnetic core memory was amazing!!! That is, when you had nothing else. Then along came the transistor and magnetic cores were thrown out to the trash pile of history.

[@hmpeter]

They were actually used two decades or so into the transistor era for being way smaller, cheaper, more reliable and less power hungry. Transistor integration is what made it obsolete in the end.

[@GClephMusique]

join the dot side, Luke!

[@VandalIO]

forgive me, if this is a dumb question, but I always wondered? why the magnetic core needs to be toridal? why can't it be a bar or a cylinder?

[@TB-jl9fr]

There also exist rod type cores and so called I cores, which are basically a flat bar. Huge benefit of toroidal is, that you can fit a decent amount of turns and and also have the terminals aligned propper. Also, they are very compact. The shape you desire depents on your magnetics purpose.

[@jnewbon00]

This is what giving a fuck looks like. Modern school teaching could learn something from this.

[@keithreynolds7740]

Wow: "Modern data processing like these..." heh.

[@eddiekulp1241]

Put that type memory in a cell phone it would be to big to carry

[@heedfulnewt6625]

Shhh don’t tell 🤫

[@rhondadoerfler6490]

My comment appears twice. That is not my doing or choice. 9:24pm 20 Sept 2021

[@AlexanderWeurding]

B 0,1 / 0.1

[@TrillShatner]

lmfao, it's a pre-transistor-era "eeprom".