3 ms·

Image formation with multiple wavelengths – simulation [video]

45 points by nothacking_ 3y ago

deleted 3y ago
[deleted]
hrnnnnnn 3y ago
If you enjoyed that, I can recommend the section in this video about computational photolithography in ASML machines. https://www.youtube.com/watch?v=rdlZ8KYVtPU https://www.youtube.com/watch?v=rdlZ8KYVtPU
- ridgeguy 3y ago
  Fabulous, thanks. Great to learn how ASML gets around wavelength and numeric aperture limits - just gotta see a different angle on the problem!
next_xibalba 3y ago
How would this be explained to a non-physicist? The video description doesn't really help (not complaining, I am sure I'm not the intended audience here).
- araes 3y ago
  At least one of the effects in the video (different wavelengths responding differently going through a clear object) is shown much better with this type of video. https://upload.wikimedia.org/wikipedia/commons/f/f5/Light_dispersion_conceptual_waves.gif https://upload.wikimedia.org/wikipedia/commons/f/f5/Light_di... The red (long) wave lengths only get bent a little bit. The purple (short) wave lengths get bent a really large amount. The video linked is basically simulating something like a red lightbulb (750 nm) and a purple lightbult (375 nm) shining through a glass lens simultaneously. See this article on lenses and lens phenomena: https://en.wikipedia.org/wiki/Lens https://en.wikipedia.org/wiki/Lens Or, simply go try this optics simulator, which gives a much better ability to play around with the ideas. The link shared should go to an example that's almost the same. https://phydemo.app/ray-optics/simulator/#XQAAAAIDAgAAAAAAAABu__36DogKgmNcbvFpAi47dVNY6we8KhkZxGubx6mKSYDyDaIS2QDRmQs-vzBugJjP7zSiaV_0fq0zrOCGyXAxG_WpzjPstMzBv0lHR1ALlWtvfBhW2f3Um2iUk3512YViOiyxRKpfJpR6kpI04KrBgUB9UdjuUqAKd8KNvtkAKjKf2Y2h5TLSQ_LBcB--mkCN2uaAA2IHtUUNUe6RM0Qacx0W8Np-FCesv_ykMRUgLp-KQIfbYc4CmgEMeh4FrQ6Ah6tNzA4B_BbnA24pucg6wzvlyBWljo2rpC3qSYPiLectVM345xKT6rakQf6w6F2YfbNml5r1Nd0dInYcGMIMi5iA_jK-q328SNjaoGuEtaRW2iv3I4WzLJNZtJ2kQpd6B-SP5s-Po1sOU5ZXFgwzim3gmhJ4uU8oR1vR8kNRlZihkFiQbtChkESTBJPIEaYoH6eYFgPHXItbQ6UrvBY3whTkhec4bWaTE_FxIv4hFO0V35Vl8q8_qmA0F8L6St3pWP_p9vxo https://phydemo.app/ray-optics/simulator/#XQAAAAIDAgAAAAAAAA... Don't turn the rays up to much though or it will cripple your GPU unless its high end. Color simulation can be turned on/off on the upper-right settings (it's a huge resource hog compared to no color effects).
  - next_xibalba 3y ago
    This is fantastic. Thank you very much.
  - db48x 3y ago
    It’s true that light of different frequencies bends a different amount, but that’s not really what this simulation shows. This simulation shows that the lens forms an image of both light sources simultaneously, even though they are emitting at different frequencies. The light inside the lens looks uniformly mixed but still comes out in such a way that the two frequencies separate and form two distinct images. Of course, you might consider it to be even more remarkable that two distinct images are formed even when the two lights are the same color, since then there is no longer any obvious way to distinguish the light from the two sources.
easygenes 3y ago
Nils Berglund posts many very similar simulation videos.. https://youtube.com/@NilsBerglund https://youtube.com/@NilsBerglund
qz_kb 3y ago
I made a sim that visualizes the different wavelengths as colors here: https://quazikb.github.io/WaveEq/index.html https://quazikb.github.io/WaveEq/index.html
- nothacking_ 3y ago
  Very nice.

45 points by nothacking_ 3y ago

deleted 3y ago

[deleted]

If you enjoyed that, I can recommend the section in this video about computational photolithography in ASML machines. https://www.youtube.com/watch?v=rdlZ8KYVtPU https://www.youtube.com/watch?v=rdlZ8KYVtPU

ridgeguy 3y ago
Fabulous, thanks. Great to learn how ASML gets around wavelength and numeric aperture limits - just gotta see a different angle on the problem!

next_xibalba 3y ago

How would this be explained to a non-physicist? The video description doesn't really help (not complaining, I am sure I'm not the intended audience here).

araes 3y ago
At least one of the effects in the video (different wavelengths responding differently going through a clear object) is shown much better with this type of video. https://upload.wikimedia.org/wikipedia/commons/f/f5/Light_dispersion_conceptual_waves.gif https://upload.wikimedia.org/wikipedia/commons/f/f5/Light_di... The red (long) wave lengths only get bent a little bit. The purple (short) wave lengths get bent a really large amount. The video linked is basically simulating something like a red lightbulb (750 nm) and a purple lightbult (375 nm) shining through a glass lens simultaneously. See this article on lenses and lens phenomena: https://en.wikipedia.org/wiki/Lens https://en.wikipedia.org/wiki/Lens Or, simply go try this optics simulator, which gives a much better ability to play around with the ideas. The link shared should go to an example that's almost the same. https://phydemo.app/ray-optics/simulator/#XQAAAAIDAgAAAAAAAABu__36DogKgmNcbvFpAi47dVNY6we8KhkZxGubx6mKSYDyDaIS2QDRmQs-vzBugJjP7zSiaV_0fq0zrOCGyXAxG_WpzjPstMzBv0lHR1ALlWtvfBhW2f3Um2iUk3512YViOiyxRKpfJpR6kpI04KrBgUB9UdjuUqAKd8KNvtkAKjKf2Y2h5TLSQ_LBcB--mkCN2uaAA2IHtUUNUe6RM0Qacx0W8Np-FCesv_ykMRUgLp-KQIfbYc4CmgEMeh4FrQ6Ah6tNzA4B_BbnA24pucg6wzvlyBWljo2rpC3qSYPiLectVM345xKT6rakQf6w6F2YfbNml5r1Nd0dInYcGMIMi5iA_jK-q328SNjaoGuEtaRW2iv3I4WzLJNZtJ2kQpd6B-SP5s-Po1sOU5ZXFgwzim3gmhJ4uU8oR1vR8kNRlZihkFiQbtChkESTBJPIEaYoH6eYFgPHXItbQ6UrvBY3whTkhec4bWaTE_FxIv4hFO0V35Vl8q8_qmA0F8L6St3pWP_p9vxo https://phydemo.app/ray-optics/simulator/#XQAAAAIDAgAAAAAAAA... Don't turn the rays up to much though or it will cripple your GPU unless its high end. Color simulation can be turned on/off on the upper-right settings (it's a huge resource hog compared to no color effects).
- next_xibalba 3y ago
  This is fantastic. Thank you very much.
- db48x 3y ago
  It’s true that light of different frequencies bends a different amount, but that’s not really what this simulation shows. This simulation shows that the lens forms an image of both light sources simultaneously, even though they are emitting at different frequencies. The light inside the lens looks uniformly mixed but still comes out in such a way that the two frequencies separate and form two distinct images. Of course, you might consider it to be even more remarkable that two distinct images are formed even when the two lights are the same color, since then there is no longer any obvious way to distinguish the light from the two sources.

easygenes 3y ago

Nils Berglund posts many very similar simulation videos.. https://youtube.com/@NilsBerglund https://youtube.com/@NilsBerglund

qz_kb 3y ago

I made a sim that visualizes the different wavelengths as colors here: https://quazikb.github.io/WaveEq/index.html https://quazikb.github.io/WaveEq/index.html

nothacking_ 3y ago
Very nice.