Define Spectroscopy

The study of the interaction between matter and electromagnetic radiation

Define Electromagnetic Radiation

Electromagnetic Radiation is a form of energy that includes visible light, heat and other radiations like x-rays and gamma rays.

Long wavelength + Low frequency =

Low energy

Short wavelength + High frequency =

high energy

Give an example of low energy waves

Radio waves

Give an example of high energy waves

Gamma rays

Wavelength measures the?

distance between adjacent waves

What is the symbol for wavelength?

λ

Velocity of radiation or Speed is a constant, what is the symbol used?

C

What are the units of measurements for λ?

Meters

What are the units of measurement for c?

ms^{-1}

Frequency measures what?

The number of wavelengths passing a fixed point per sec

Give the symbol for frequency

f

What is the symbol for wavenumber?

1/λ

What are the units of measurements for frequency?

s^{-1 }or H_{z}

What are the units of measurement for wavenumber?

cm^{-1}

What is the equation used to relate veloctiy, wavelength and frequency?

c=λf

What is the equation triangle that relates c,f,λ?

To convert into meters for wavelength: 1nm =

1x10^{-9}m

Conversion of wavelength into energy can be accomplished by using the equaiton:

E=hf

Therefore to calculate energy, the combined equation that can be used is:

E = Lhc/λ