Introduction To Holography - 1972

[@Skelegoblin]

Rhystic Studies sent me here - I've always wanted to know more about holography and his video "The Shimmer" used this as an early reference.

[@MD.GULZARALI]

Why old videos sre are super easy to understand ????

[@muratkaradag3703]

Back then, Education was everything. Today we have youtubers and streamers

[@laurencamila9024]

They care about teaching not about clicks

[@timurgabdsattarov1613]

In my opinion it’s like saying why are all old movies so good? The thing is that isn’t true. Out all the hundreds and thousands of movies created back then. Yet some were so good you watch them today. Same here. There were probably lots of videos created back then which were pretty hard to understand, but this one was so good a guy uploaded it many years later

[@mynamejef7963]

They actually wanted you to be smarter back then

[@boonedocksfl2012]

They weren’t made to be crack addiction.

[@ThomasGrillo]

Thank you for sharing this video with us. I met Dr. Jeong, and attended his holography workshops, back in 1991, at Lake Forest University, near Chicago. He ran this very film for us, during the one of the lectures. Very cool. I really miss being able to produce holograms. I live in a house which is on a wooden foundation, which won't permit holography, due to vibrations.

[@LitiHolo]

You could definitely make holograms with our kit! Just need a solid table. I've actually made holograms at a local Starbucks on one of those little tables there! That's one of the advantages of our kits, you don't need a whole elaborate set up to get holograms.

[@ThomasGrillo]

@@LitiHolo Indeed. If I'm not mistaken, there's neoprene under the component holders? If that economic package goes through, I'll certainly put it to the test here. I no longer have the 3,000 pound concrete slab on inner tubes, but I still have all my spatial filters, and mounts, along with a 40mW HeNe. But I'd still want to test your kit in it's stock presentation. :)

[@ruthann3190]

So as a barista, was I actually making holographic coffee espresso drinks?

[@ThomasGrillo]

@@ruthann3190 Don't know about that, but there is an experiment, in which one can hold a reflection hologram over a steaming cuppa, for a few seconds, and the coloiur of the hologram will shift from green, to red, as the film emulsion swells, and defracts the light at a lower freqency. :)

[@TheRobotAssassin]

That circular hologram of the horse was dope.

[@ukranaut]

The lens one is amazing.

[@ThomasGrillo]

Couldn't resist watching this again. :)

[@ismimeli]

This video video was so awesome and easy to understand. Thank you!

[@hullinstruments]

Damn what a great video. I hope The guys behind the KZbin channels “tech ingredients” “Thought emporium“ and “applied science” have seen this video.

[@Andre-qo5ek]

i am finding it hard to understand the part where it is said that a piece contains the whole... that one piece contains the view from that one point of reference is the more accurate statement correct? the dice hologram example is certainly a better example but i will keep looking for an even more pronounced example. Thank you for you historic and modern examples.

[@AdamBechtol]

I too found that quite confounding, and came to the comments to learn more about it.

[@RocketPropelledGuy]

I had trouble understanding why it is able to record parts of the object that aren't directly illuminated by the object beam. The reason it is able to do this is because it captures the entire light field. There is some diffusion of the object beam once it meets the object, and some of the light will bounce around the entire area, with each contact of any side of the object or objects causing further phase change, which is how it obtains and records the spatial information of those angles. Obviously getting to the far end of the sides of the object will have reflected a lot of times, unavoidably losing some of the intensity each time. This is why during playback the image tends to get darker the further to the side the viewer is looking at the hologram from. All of the light eventually ends up at the holographic medium where the reference beam is shining and forms the interference pattern. I say eventually. It's light. For all practical reference of speed it's instantaneous.

[@maximofernandez196]

Thank you so much for this comment. I also had trouble with it, and this helps me a lot.

[@RocketPropelledGuy]

@maximofernandez196 looking at this again I think dumbed down the explanation too much and it might get inferred wrong. The big thing is all waves had to pass the reference beam on the way to the recording material. Due to the reference and object beam being off axis, all of the reflections caused by the object beam illuminating the scene, each one of which produced it's own unique wave, crosses the reference beam on the way to the recording medium, so since every wave that already passed through the reference beam interfered in the reference beam as well, the amplitude changes of every single wave from all angles get encoded into the reference beam prior to interfering with the next wave and finally reaching the recording medium. Does that make more sense?

[@NolenFelten]

Still useful, I used these concepts on my current project

[@v037_]

12:39 insane

[@DragonsAndDragons777]

A shame it hasn't progressed lots more since this film came out

[@احمدالشحي-ذ4ظ]

Very very helpful Video thanks

[@sammy5576]

so freaking cool why isn't this in school

[@mdrafiqul3358]

[@pastuh]

I just want to make some POGs with my own art.. Not expectes it's so hard..

[@v037_]

6:40 how

[@dhdjdjidjjwndnxjjznqba]

Crest never break trough

[@cyberlightbeing]

Awesome, thank you!

[@armandotortolero6041]

this video reminds me of Tracy Twymann ....

[@Allan_aka_RocKITEman]

@LitiHolo >>> I remember FILM. And PROJECTORS. 😊

[@diamony123]

A Pitt stop for holograms

[@kamalionify]

WHAT THE FUCK THIS IS SO COOL!!!

[@sabahsabah9732]

فيديو رائع جدا

[@Ss-zg3yj]

Unbelievable.

[@HMT_main]

13:16 This sentence aged rather poorly.

[@mehak9364]

This is osm 😊😊

[@ronintsukebin9163]

Can you say Sept. 11?

[@renakunisaki]

Jet fuel can't melt holograms

[@ronintsukebin9163]

@@renakunisaki Jet fuel can't melt buildings

[@deezmastercu1935]

Whose here because of eotech

[@SpaceCowboy-u7j]

Holograms -not airplanes-

[@jianzhen3]

the newest videos made me confuse, and the old video made it clear