Electromagnetic Spectrum

List the 3 variables of light

A- amplitude

λ- wavelength

v- frequency

List the 1 constant

c=3×10^8m/s

What speed do all waves in a spectrum travel at?

speed of light (3×10^8m/s)

What energy properties can vary with waves?

wavelength and frequency

What does the spectrum represent?

energy continuum

What range does visible light take on the spectrum?

400nm-750nm

Which has higher energy, violet at 400 nm or red at 750 nm? Why?

violet at 400nm because energy is inversely proportional to wavelength and the shorter the wavelength the higher the energy

What does the electromagnetic spectrum cover a wide range of?

frequencies and wavelengths of light

Define monochromatic light

light of a single wavelength

Define polychromatic light

light of many wavelengths

What is the product of wavelength and frequency?

c (speed of light)

What is light of a particular wavelength and frequency associated with?

energy

What has to be given to calculate the energy of a photon of this light?

λ or v

What does a photon of a particular wavelength and frequency of electromagnetic radiation have?

associated energy

What are the 2 equations relating to either frequency or wavelength and the energy of a photon? 

E=hv

E=hc/λ

What does h represent? 

Planck’s constant- 6.626×10^-34