Across
- 6. A substance that glows after being exposed to energized bulb
- 7. Producing light from frustration is called....
- 9. A glass tube filled with a small amount of gas(mercury vapour)
- 10. The process of transforming electrical energy directly into light energy light
- 13. Produces brighter images
- 15. involves passing an electric current through the air, or another gas, between two carbon rods
- 17. An Electroluminescence light source made out of a material called a semiconductor
- 18. emitted by some substances when they are exposed to electromagnetic radiation
- 20. Large screen technology called a .....
- 21. A chemical used to detect traces of blood
Down
- 1. A light produced from a chemical reaction without a rise of temperature
- 2. is a light that is produced by an object such as metal
- 3. inside an ....... is a filament (thin piece of light)
- 4. the ability to store the energy from a source of light, then emit slowly over a long period
- 5. A material that can be made to change how well it conducts electricity
- 8. A method for producing light e.x) neon and lightening
- 11. An example of Electric Discharge:
- 12. LED
- 14. In a Liquid Crystal Display a white fluorescent shines behind a crystal
- 16. solid that can change the orientation of it's molecules like a liquid but only when electricity is applied
- 19. Organic light-emitting display