1. ULTRAVIOLET RAYS
By: Brenton edwards

2. Physical Description Invisible to the human eye
Shorter wavelength than visible light
10 to 400 nanometers
800,000,000,000,000 to 30,000,000,000,000,000 cycles per second
186,000 miles per hour
Electromagnetic radiation

3. Uses
Drying clothes
Sunbed research
Zapping bugs
Tans

4. Source
Sunlight
UV lamps
Arc welding
Mercury vapour lamps

5. Benefits and Hazards Benefits Vitamin d production Improved mood
Acceleration of aging skin
Promotion of skin cancer
Etc.

6. Occupational Exposure Limitsnm

7. Applications Used to kill microbes
UV lamps to sterilize food and drug companies product
Used by a doctor to treat vitamin d deficiency

8. Fun Facts Ultraviolet rays are visible to bees
Ultraviolet means beyond light
Spanish beach umbrellas don’t provide sufficient sun protection
You can still get sunburned on a sunny winter day