3 ms·
What if I like magenta? Or brown?
by staplung 6mo ago
What if I like magenta? Or brown?
- zamadatix 6mo agoPedantry for pedantry, you're in luck as the title says they created 'any wavelength lasers' not 'any wavelength laser' so you can make any such combos you like rather than the fixed set now (if true) :p.
- dullcrisp 6mo agoCan I interest you in indigo or violet? Or a nice orange?
- dnnddidiej 6mo agoGenuine q: how close can you get to magenta with the rainbow?
- nine_k 6mo agoWhat we call "magenta" is the sensation of both red and blue color-sensitive cells in the eye being excited at the same time. There's no single wavelength that produces this effect (unlike e.g. yellow). The closes you can get is violet, which looks faint to the eye. A rainbow gives you both red and blue; mute everything else, and you'll get magenta. That's what magenta pigments do when illuminated by white light (which is a rainbow scrambled).
- dyauspitr 6mo agoSaying a wavelength doesn’t do it doesn’t make any sense. If you can perceive it visually, a wavelength is doing it.
- redsocksfan45 6mo ago[dead]
- nine_k 6mo agoTwo wavelengths do it; one does not suffice. It's like a perfect fifth can not one note.
- dyauspitr 6mo agoThe interference is a wavelength too. Maybe not pure but it is one. Afaik they cannot be interpreted as two separate wavelengths and then “brain combined” when the aperture (the retina) is so small.
- redsocksfan45 6mo ago[dead]
- dnnddidiej 6mo agoI haven't heard of a wavelength of 2 frequencies merged. It is like saying what is the wavelength if you tune to 2 radio stations with 2 radios (assume silent transmition for simplicity). There are 2 wavelengths.
- thaumasiotes 6mo ago> I haven't heard of a wavelength of 2 frequencies merged. It is like saying what is the wavelength if you tune to 2 radio stations with 2 radios No, any wave has a wavelength. You can add sin(3x) to sin(2x) and the resulting wave is a perfect fifth. Its wavelength is determined by its components; since sin(2x) has a wavelength of π and sin(3x) has one of 2π/3, the combined wave will have one of 2π. The difference is that sin(2x) and sin(3x) are both sine waves, while their sum is not. There is no such thing as a pure tone of two merged frequencies, but there are many possible waves at any given frequency that aren't pure tones.
- dnnddidiej 6mo agoThanks, interesting!
- dnnddidiej 6mo agoIt never clicked before that yellow and magenta are snowflakes to each other in this regard. I thought they were equals, but magenta is more majestic!
- compass_copium 6mo agoNot very! This is on the "line of purples". Here's a nice visualization of color perception (there are more modern ones, but we used the 1931 color space when I was working in the field). The horseshoe shape on the outside is the single wavelength colors. https://en.wikipedia.org/wiki/CIE_1931_color_space https://en.wikipedia.org/wiki/CIE_1931_color_space