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Chapter 7 Waves/rays
first part of chapter 7
spectrum of radiation over a broadband of wavelength
short wave lengths, high frequencies, stopped only by pb and concrete
similer to gamma but made with special equipment. pass through soft tissue to be stopped by bone
sunlight that causes sunburn, mostly absorbed by ozon layer
eyes and brains interpret frequencies as light and color
given off by hot objects
low frequency and energy waves for cooking and communicating, longest lowest wave
lambda, distance between peaks of a wave
nu, number of waves/sec that pass a point, units Hz