Oi-1 Fluorescence
Aim
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.
Apparatus
- U.V light source
- OMO (Washing Detergent)
- Fluorescent dyes
- Uncoated fluorescent tube
- Fluorescent minerals
- Uranium glass
- Fluorescene
Fluorescent Tubes Apparatus.
Description
Various materials are available that fluoresce under the action of the strong ultraviolet source.
These include
- OMO (Washing Detergent)
- Uranium glass
- Fluorescene
- Minerals
- Fluorescent plastic
- Fluorescent powder
There is also a set of tubes that illustrate the action of fluorescent discharge tubes: these are
- Uncoated Mercury discharge tube
- Mercury discharge tube half coated with white fluorescent powder
- Fluorescent tubes coated with fluorescent powders
- Green
- Blue
- Fluorescent powder representing different colour temperatures