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1,364,329 Views • Feb 16, 2024 • Click to toggle off description
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Views : 1,364,329
Genre: Science & Technology
License: Standard YouTube License
Uploaded At Feb 16, 2024 ^^
warning: returnyoutubedislikes may not be accurate, this is just an estiment ehe :3
Rating : 4.972 (612/86,844 LTDR)
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User score: 98.95- Masterpiece Video
RYD date created : 2024-10-25T02:43:50.561442Z
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889 Comments
Top Comments of this video!! :3
The first starfield is Orion, the second is Ursa major. Very cool
Edit: It's not obvious to everyone lol
5.1K |
The Earth rotating is the best one! So cool!
1.8K |
This short deserves its own full length video.
570 |
The earth rotating would look perfect on display in an evil lair in a spy film
497 |
We use the diffraction patterns of x-rays through single crystals of molecules to calculate the structure of the molecules making up the crystal lattice. It's crazy - you literally get a picture of your molecule back from your local friendly crystallographer.
152 |
The rotating Earth reminds me of the Death Star schematic representation in the Rebel base in Star Wars. Would be rather cool to have that, as well.
55 |
In the 90's and early 2000's you could find a common toy in corner-stores that was a key-chain laser with various screwable small lenses in front that shot out different shapes and images. Sometimes you would find more relatively complex images. The most complex I had was a fairly detailed lion-head.
Of course, nothing as complex as what you are showing. Back then it was just line art. 😛
123 |
Canadian currency has a defraction grating as well for security reasons. Its in the clear small maple leaf in the top lefthand side of the bills
149 |
Check out the Canadian polymer bills. The ones with the semi-opaque white circle inside the maple leaf is a diffraction grating that shows the amount of the bill.
4 |
I built a laser and refraction grating set up to reproduce Louis de Broglie’s wave-particle duality experiment as a practical device that could be used in a classroom.
Given that the standard kit cost in excess of £450 at the time, my £40 version got me published in an international physics magazine so that other colleges could make their own.
295 |
This is something that would be great for parents to show to our kids. Especially once they start getting somewhat savvy in maths. I will start looking for a grating like that.
1 |
Nostalgia! There used to be those laser flashlights with diffraction filters to project cool designs. They were very popular among school kids. Although I don’t think they were meant for kids due to safety concerns.
9 |
Years ago (like 18 years ago) I had won a red laser pointer (a really cheap one) at an arcade that came with different screw on lenses/filters and they did stuff like this!
It made a grid pattern, or a smiley face, or a pair of spooky eyes, stuff like that, it had about 8 different things.
Seeing the more advanced ones here look so much better, and I want a laser pointer that can do this stuff again XD
13 |
This reminds me - I remember when holograms became commercially viable as I was growing up. In some news articles, there was talk about some types of holograms that were only viewable with laser or coherent light. This reminds me of that. Very cool stuff.
3 |
And they try to claim that physics isn't just rebranded magic.
109 |
What used to be MWK Industries in California (great deals and rip-offs on LASER surplus) sold what was a CD form factor acrylic discs that would do animations depending on how you advanced the disc. I changed out the infrared laser diode in a CD player, made a custom stepper controller and adjusted the optics to collimate the beam. For what it was, I really enjoyed it. This was way before laser pointers could be bought in the pet section of most stores. My various lasers were the envy of my physics teacher. lol
1 |
It would be so cool to make a looping animation, print it onto a strip, curve that strip into a ring and then spin it in front of the laser
9 |
Canadian money has difraction grating built in. It projects the denomination on a wall as a security measure
6 |
So you know how in the double slit experiment, the diffraction pattern is the Fourier transform of the input.
I.e. the top hat function of a beam becomes a sinc function.
Theoretically you should be able to do the reverse. Create a diffraction grating that can take light that's been diffracted into a sinc function and diffract it back into the top hat function.
1 |
@DAVOinIN
9 months ago
My favorite thing about diffraction gratings is that the output is just the Fourier transform of the grating structure. So if you want an image of the earth, just take the 2D inverse Fourier transform and pattern it onto your screen using maskless lithography.
3.2K |