How does a cathode ray tube (CRT) screen generate its RGB color beams?
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How does a cathode ray tube (CRT) screen generate its RGB color beams?
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- 2) Light from glowing hydrogen contains many discrete spectral lines, of which two are Ha (hydrogen-alpha) and HB (hydrogen-beta), with wavelengths of 656.3 nm and 486.1 nm, respectively. Find the first-order angular separation between these wavelengths in a spectrometer that uses a grating with 6000 slits per cm.the normal human eye can detect colors whose wavelengths range from 380 nm to about NOTE: 1 n m = 10 − 9 m ( o r 1 m = 10 9 n m ) Group of answer choices 600 nm. 750 nm. 550 nm. 650 nm.Sydney wanted to color her hair from home so she signed up for an online service that sent hair color directly to her. The service required information about the thickness of Sydney's hair to mix the color properly. They only wanted to know if it was fine, medium, or thick, but being an astute student of physics, Sydney knew she could be more precise than that! She shone a red laser pointer with a wavelength of 670 nm through a single strand of hair and a diffraction pattern appeared on the wall 1.85 m away. a) Explain why this fringe pattern appears and how it confirms the wave nature of light. What would you predict the image on the screen to look like if light were a particle instead? b) What is the thickness of Sydney's strand of hair? Explain which formula is best to use here and why?