| G1-3 | Fluorescence. |
| Purpose: | To demonstrate light and quantum physics. |
| Description: | Using the Crooke's tube, a beam of electrons striking phosphorus on an aluminum screen will cause the phosphorus to fluoresce. Similarly, the cold cathode tube with a bouquet of flowers will cause the flowers to fluoresce when the flowers are bombarded with electrons. |
| References: | MP1C. |
| Equipment: | Crooke's tube, Bouquet tube and induction coil. |