U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.
-
Upload
virgil-merritt -
Category
Documents
-
view
219 -
download
2
Transcript of U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.
![Page 1: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/1.jpg)
U.V. Rays
Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 2: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/2.jpg)
What Are U.V. Rays?
• U.V. (or Ultra Violet) Rays are what comes from the sun, what causes our sunburns, what helps bees pollinate.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 3: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/3.jpg)
What Are U.V. Rays?
• U.V. Rays lie between Visible Light waves and X-Rays on the Electromagnetic Spectrum.
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 4: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/4.jpg)
What are U.V. Rays?
• The wavelength is between 4x10-7 meters and 1x10-8 meters.
• The frequency is between 1015 Hertz and 1017 Hertz.
![Page 5: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/5.jpg)
How Were U.V. Rays Discovered?
• Discovered in 1801 by Johann Wilhem Ritter.
• Ritter was born on December 16, 1776 in Samitz, Germany.
• While doing an experiment with silver chloride, Ritter found that it was darkened by a substance beyond visible light…Ultra Violet Light.
![Page 6: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/6.jpg)
How Were U.V. Rays Discovered?
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 7: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/7.jpg)
Types of U.V. Rays• UVA:
– very similar to visible light– is the most harmful to the eyes
• UVB:– wavelength is 2.8x10-7 meters to 3.15x10-7 meters– Causes tans and most skin damage, including
cancer
• UVC:– wavelength is 1x10-7 meters to 2.8x10-7 meters– Earth’s atmosphere blocks most of these, but they
slowly deplete the ozone– Most harmful type
![Page 8: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/8.jpg)
Types of U.V. Rays
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 9: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/9.jpg)
Who Can See U.V. Rays?
• Humans can’t see them
• Some insects can see them and often mistake them for the sun’s rays.– Bumblebees use U.V. Rays to find pollen in
flowers
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 10: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/10.jpg)
Uses for U.V. Rays
• Forensics: identifying bodily fluids• Florescent lamps• Helps make Vitamin D for bones• Treats skin diseases such as psoriasis, lupis
vulgaris, and tuberculosis• Kills bacteria• Dental practices: helps glue dryMinerology:
identifies minerals• Detects forgeries in artwork• Astronomy: can identify planets and stars• Ultra Violet fly traps
![Page 11: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/11.jpg)
Uses for U.V. Rays
• Dental Practices
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.
![Page 12: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/12.jpg)
Are U.V. Rays Harmful?
• U.V. Rays make up 7% of the sun, but only half that reaches the earth – If all the U.V. Rays in the sun reached earth, they
could kill living things
• Sunburns are caused 15 minutes after exposure to UVB rays
• Can cause wrinkles, melanomas, and damage cataracts
![Page 13: U.V. Rays Eliza Burr, Sydney Appelbaum, and Brittany Tedford-Riley.](https://reader035.fdocuments.us/reader035/viewer/2022062804/5697bf841a28abf838c86bb5/html5/thumbnails/13.jpg)
PROTECT YOURSELF: USE SUNSCREEN
QuickTime™ and aTIFF (Uncompressed) decompressor
are needed to see this picture.