cool diffraction gratings

[@TheKingtijger]

Wooo, amazing to sees this. I actually did my physics bachelor thesis on this problem! Finding a so called freeform lens for a given image and light input. For a laser as input, it is already hard to calculate.

[@csn583]

Are the "animated" ones discrete frames? I'm struggling to imagine how it could work continuously...

[@SteveMould]

Here's where you can get one: www.materialsampleshop.com/collections/surface/products/diffractive-optical-element

[@jordan122095]

Can this company make me a Diffraction Grating Sheet with the image so I can pour chocolate onto the diffraction grating sheet and get the holographic image into the fat crystals of the chocolate if it's temper and ratio of sugar crystal size is just perfect which I have a recipe for from a Swiss chocolate artisan

[@jonnyreverb]

Thank you 🙏

[@adamplace1414]

Okay I'm trying to work that last one out in my head, but that's really tough. I'd love to see a full video by you about these things and how they work. Very cool!

[@reynoldskynaston9529]

My guess is certain points diffract into images and those points are spread out into lines put side by side to give that animated appearance as you move the laser side to side.

[@jonnyreverb]

You can make your own by etching an image onto glass, spreading a laser beam with a concave mirror or a spatial gilter, and illuminating a piece of holographic film and the glass by shining the beam through the glass at the film a couple feet away. That's the old school analog laser-viewable-hologram method. 😊

[@reggiep75]

Needs a deeper vid, Steve. This is highly interesting stuff. 👍

[@martinellis38]

Diffraction patterns can do way more than that, especially if you go outside the realm of visible light. Still an excellent and entertaining demonstration. Thank you

[@snork_games]

Don't tease us like that! Tell us, what other things can diffraction patterns do?

[@martinellis38]

For a start unlock molecular structure. People have also experimented with math processors using lasers and such films.

[@williamnicolas122]

Literally X ray crystalligraphy before ours eyes

[@ucant_711]

❤❤❤

[@riuphane]

My daughter got some glasses that have such a thing in the plastic lenses, so as you look at points of light (most notably Christmas lights) into snow men, so cool to see this elsewhere and get the proper name

[@randomradicalstorm8705]

This would be a sick christmas gift.

[@supreme5166]

That’s actually cool

[@Pravinsahu-qf9bb]

This is not diffraction. This is refraction.

[@panzerofthelake4460]

so sci-fi futuristic glass screens are gonna be a reality soon? nice

[@gstoe5560]

can you post the link where I can buy one. That's so cool! Thanks

[@smileawhile3788]

I think it's a sample but I'd buy one too!

[@SteveMouldShorts]

www.materialsampleshop.com/collections/surface/products/diffractive-optical-element

[@lathiat]

I feel like these shorts need to come out a little slower. Too many to watch in a day! 1 or 2 a day?

[@romanski5811]

ikr? They're way too long to comb through all of them!

[@jamesch9331]

I have always wondered why laser light makes that grainy texture around the place it his, why isn't it smooth? Is it interference with itself?

[@ErikDaGreat]

I dint remember steve being so old

[@mikemac5070]

Me: thinking I knew all about diffraction gratings and bragg gratings and double diffraction etc. this video: me: .........

[@ramous5182]

what are these called? I cant find it anywhere!

[@SteveMouldShorts]

www.materialsampleshop.com/collections/surface/products/diffractive-optical-element

[@urinstein1864]

I have no idea why you don't just throw these on your main channel. Of course you know more about having a YT channel than I, but my impression was that particularly channels with long videos that generate a lot of short highlights (like gaming channels/streamers) have separate shorts channels, because they 1) repeat content and 2) post multiple shorts per day. I feel like your case is more similar to the kinds of channels that upload 15min videos on a weekly basis and then use shorts as a means of generating traffic towards their main videos by either accompanying then or, well, act as the clickbait for them. Ryan McBeth has been a particularly successful example of this recently, but I have noticed quite a few.

[@1vader]

Shorts really spam the sub box though. I love these shorts but there are some other channels I'm subbed to where I like their proper videos but they spam a ton of shorts which I don't care about and it's super annoying since I don't really want to unsub but I really hate all the shorts making it harder to find the stuff I actually want to watch. It's already annoying enough with channels that do several very different kinds of videos but at least with those you usually don't get 5 videos a day.

[@randomdosing7535]

Hard on maths i think

[@yesthatsam]

What’s the laser you are using ?

[@EebstertheGreat]

Are these holograms? I never really understood how those worked, but the principle seems sort of similar.

[@distantsalutations9120]

This could be seen as a kind of 2-dimensional hologram. The light needs to be projected onto a surface.

[@armstrong.r]

WHAT

[@Kyoz]

🤍

[@cookiechokkate9340]

deez

[@distantsalutations9120]

Who is this deez fellow I keep hearing about?

[@cookiechokkate9340]

@@distantsalutations9120 deez nuts

[@distantsalutations9120]

@@cookiechokkate9340 By Jove it seems that I have been got. Good day to you fine sir or madam, and may you get them one thousand times over.