Electromagnetic Spectrum

Absolute Zero

-273 c

electromagnetic radiation models

wave and particle models

electromagnetic wave is responsible for…

light!

speed of light

300,000,000 m/s

how to describe EMR?

Frequency, Wavelength, and energy level

speed = frequency x wavelength

Wave equation

list wave types from longest to shortest wavelength

radio, microwave, infrared, visible light, ultraviolet, x-ray, gamma ray

list electromagnetic waves by highest to lowest frequency

gamma ray, x-ray, ultraviolet, visible light, infrared, microwave, radio

shorter wavelengths have ___ frequency and ____ energy

higher, higher

longer wavelengths have ___ frequency and ____ energy

lower, lower

multiplier for micro___

0.000001 (10^-6)

multiplier for nano___

0.000000001 (10^-9)

multiplier for tera___

1,000,000,000,000 (10^12)

multiplier for giga___

1,000,000,000 (10^9)

multiplier for mega___

1,000,000 (10^6)

Frequency

how many wave lengths pass through an area in one second

How is energy generated at the atomic level?

photons move up and down energy levels on an atom

High frequency is equal to

high energy

the shorter the wavelength the higher the ___

frequency

visible light

0.4 to 0.7 micrometers

blue light

0.4 to 0.5 micrometers

green light

0.5 to 0.6 micrometers

Red light

0.6 to 0.7 micrometers

NIR

0.7 to 1.3 micrometers

Mid IR

1.3 to 3.0 micrometers

Thermal IR

3.0 to 5.0, and 8 to 14 micrometers

Microwave

1.0 mm to 1.0 m

Radio waves

1.0 m and beyond

Formula for how much energy an object radiates

Total energy (M, watts/m²) = Stefan-Boltzmann constant x Temperature in Kelvin^4