Chapter 24

Electromagnetic Spectrum

• The arrangement of electromagnetic radiation according to wavelength

Photon

• A small packet of light energy

Spectroscopy

• The study of the properties of light that depend on wavelength

Continuos Spectrum

• An uninterrupted band of light emitted by an incandescent solid, liquid, or gas under pressure

Absorption Spectrum

• A continuous spectrum produced when white light is passed through a cool gas under low pressure; The gas absorbs selected wavelengths of light, and the spectrum looks like it has dark lines superimposed

Emission Spectrum