Tuesday, April 19, 2016

Loooong wave lengths..........and shorter ones.....



can red light contain more energy than blue?
« on: 03/04/2009 22:56:36 »
This is a question that puzzles me :)

"blue light puts off more energy when looking at the Electromagnetic spectrum as a whole from the right to left (or from highest wavelength and lowest frequency (i.e radio waves) all the way to gamma rays with extremely small wavelengths and high frequencies) the energy increases. so the energy of radio waves is much smaller than gamma rays

now to put that to use in the problem of light, we know that red light has a larger wavelength (somewhere around 600-700 nm) and blue light with a smaller wavelength of somewhere around 475 nm thus the frequency (wavelengths per unit time) is larger for blue light

using the equation E=((hc)/wavelength) where E is energy, C is the speed of light (3x10^8 meters/second) h= planks constant of 6.626 x 10^-34 joules x seconds

we find that plugging in a smaller wavelength gives us a higher energy "

So in what way isn't this equivalent to red and blue shift?

I'm not sure of why those two wouldn't describe the same 'energy equivalences/proportions'. the only way I can understand red light to contain more energy per tine unit than a blue light is if you somehow either use more energy to produce that red light and/or somehow connect those lasers in 'series'.

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