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Speed of all EM waves
3 x 10^8 m/s
Common EM wave properties
All are transverse, travel at the same speed, and transfer energy
Visible light spectrum
Red has the lowest frequency (longest wavelength); Violet has the highest
Non-ionizing radiation
Radio waves, microwaves, infrared, and visible light; cannot remove electrons
Ionizing radiation
High-frequency waves (X-rays, Gamma) that can delocalize electrons and cause cancer
Gamma ray uses
Sterilizing medical equipment and treating cancer by destroying cells
X-ray properties
Pass through skin/tissues but are absorbed by high-density bone
Radio wave transmitter
Oscillating electric charges produce oscillating electric and magnetic fields