Spectra + Inverse Square Law Flashcards
1
Q
What is Irradience?
A
Light irradiance on a surface is the power on every metre squared.
2
Q
Graph of I against d?
A
Curve
3
Q
Graph of I against 1/d2
A
Straight line
4
Q
Light irradiance is inversely proportional to?
A
the square of the distance from a point source
5
Q
Continuous Spectrum
A
Produced by an object or gases which radiate heat
6
Q
Line Emission Spectra
A
Produced by electrons making transitions from excited states to a lower energy level releasing a photon of a particular frequency
7
Q
Line Absorption Spectra
A
When photons of light pass through a gas. The photons with the same energy as the energy gaps in the atoms can be absorbed
