Ultraviolet light
Oi-1 Fluorescence
Published: Wednesday 15 March 2006
To demonstrate fluorescence: i.e. Certain excited atoms will emit a photon of lower energy than the incident photon that caused the transition. If the process takes place rapidly (< 10 ^-7 sec) it is called Fluorescence.
Oi-2 Phosphorescence
Published: Wednesday 15 March 2006
To demonstrate that a phosphorescent material when irradiated with UV light will emit light of a lower energy for an appreciable interval of time.