CHEM M3C Lecture Notes - Lecture 1: Color Vision, Electromagnetic Spectrum, London Academy Of Music And Dramatic Art
Document Summary
Radio waves (nuclear spins), microwave (rotations, they are quantized), infrared *we perceive as heat* (vibrations), visible and ultraviolet(valence electrons), x ray (core electrons), gamma ray (nuclear excited states) C = wavelength (m) x frequency (s^-1, 1 hz) Frequency: how many cycles of wave per second. Example: dentist uses x rays with a wavelength of 1. 00 to image your teeth. Convert from angstroms to meters: lamda = 1. 00 a x 10^-10 m/1a = 1. 00 x 10^-10. Calculate frequency: v = c/lamda = 3. 00 x 10^8 m/s / 1. 00 x 10^-10 m = 3. 00 x 10^18 s^-1. Absorption spectra of human visual pigments: red, green, blue. Mix red, green and blue light to make white light. Additive (light): red x green = yellow, red x blue = magenta, blue x green = cyan. Subtractive (paint): magenta x yellow = red, magenta x cyan = blue, cyan x yellow = green.
