Electromagnetic Waves (5/13)

Mathematically can be described as waves Mathematically can be described as particles They can carry energy They travel slower in water than in a vacuum

electromagnetic waves

Electromagnetic waves that oscillate perpendicularly to the direction of the wave’s propagation

Perpendicular to each other and perpendicular to velocity

multiple electromagnetic waves

polarization where the direction of the electric and magnetic fields rotate steadily over time. can be right handed or left handed (clockwise or counterclockwise)

Low WL/high v/high frequency-» gamma rays, x-rays, UV, VIBGYOR, IR, microwave, FM radio, AM radio, long radio waves High WL/low v

400-750 nm violet-red

used to measure the degree to which a substance absorbs different wavelengths of EM radiation The color of light we see is caused by the wavelength of light that are reflected back, so NOT absorbed

3 x 10^8 m/s

velocity=wavelength x f velocity=c (only in a vacuum) wavelength and frequency are inversely related

E=h x f h= 6.62 x 10^-34 m^2*kg/s

E=hc/lambda