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Lol y’all are very god about your warning people about safety. I don’t have enough time in the day to earn every last person about where they point their dong. Encap, you’re for sure right that with no fog you’re SOL. But creating the effect is for sure possible. Laserblast, don’t let the...

Hahah oh doiiiii. Spot on good sir! Not much harder tho as you probably won’t need too many beams. I’ve had a lot of trouble finding gratings online honestly. I bought a couple different thicknesses of this stuff https://www.amazon.com/gp/aw/d/B0777JG32R?psc=1&ref=ppx_pop_mob_b_asin_title It’s...

You could do it with beamsplitters but you'd have to have a bunch of different ones that let through different fractions of the beam. Otherwise you get a strong beam from the first cube and less and less going through more. Diffraction grating does just fan it out, but if you put the laser on...

Hellooooooo all you pointers of lasers! phosphoressential here, hailing from the crisp morning dew of the Pacific Northwest. I'm an opto-mechanical engineer for a company in the semiconductor industry. My small satellite office specializes in optics and lasers. In the back lab we have a van...

CurtisOliver, I'm not quite understanding. I thought you said that it should be at 555 nm. My numbers from the CIE agree with that.

Hi CurtisOliver! My photopic curve peaks at 555, and scotopic at 505 nm. Both the photopic and scotopic curves I am using are from the International Commission on Illumination (CIE), and are kindly hosted here by University College London. hakzaw1, hey I'm getting there! I needed impetus to...

Good point. I was trying to model low light, so I should've been using the scotopic response curve since the beginning. No hurt in having both! Here are the updated charts including scotopic eye sensitivity as darker colors. I'll remind again, Rayleigh scattering has been at the base of my model...

Hi Encap! I am, in fact, well aware of what you speak. As you can see by my graph, the red line is labeled the Rayleigh Scattering plot. This is what I described as the "amount of light scattering from the beam." The Rayleigh distribution and the visual spectrum sensitivity were combined with...

Hi All! First real post. Real happy to be here. This is something everyone thinks about at some point when dealing with what power you need to achieve a visual effect with a certain wavelength of light. What I would like to see is a graph of the milliwattage needed at any wavelength to achieve...

In economies of scale, this logic is not always true. These interference patterns are very precise, small, and take a healthy amount of computing. They, like accelerometers, lithium batteries, and tiny cameras, are all produced at such a scale that they have become very cheap to make on long...