If You're Interested in Color, You Have To Read This:

[ggbutcher (Glenn Butcher)]

https://arstechnica.com/science/2021/06/physicists-unlock-multispectral-secrets-of-earliest-color-photographs/

When reading, if you substitute the words “red”, “green”, and “blue” with “high”, “medium”, and “low”, it then becomes a “correct” article…

[PhotoPhysicsGuy (Bob)]

Cooool! I didn’t know that multispectral was a thing back then!

@ggbutcher

if you substitute the words “red”, “green”, and “blue” with “high”, “medium”, and “low”, it then becomes a “correct” article…

That depends on what “high” etc. refers to (wavelength, frequency, wavenumber).

[ggbutcher (Glenn Butcher)]

@PhotoPhysicsGuy

That depends on what “high” etc. refers to (wavelength, frequency, wavenumber).

wavelength. troy_s got in my head…

[Matt_Maguire]

high, medium, low normally refers to frequency. If you want to talk about wavelength, you usually use terms like long, medium and short.

[ggbutcher (Glenn Butcher)]

Thanks, after 40 years working around communications, I should appreciate the distinction by now…

[afre (Alan)]

How about the Goldilocks just right?

[alexsunny123 (alex sunny)]

@Matt_Maguire

high, medium, low normally refers to frequency. If you want to talk about wavelength, you usually use terms like long, medium and short.

thanks for the information.

[alexsunny123 (alex sunny)]

@alexsunny123

@Matt_Maguire

high, medium, low normally refers to frequency. If you want to talk about wavelength, you usually use terms like long, medium and short. . . . .

thanks for the information.

thanks alot my issue has been fixed.