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Free research essays on topics related to: uv b

8 results found, view free essays on page:

  • Ozone Molecules Ozone Depletion
    1,052 words
    The beginning of the CFC (chlorofluorocarbons) era started in 1928, when CFC' were invented by a Du Pont chemist. CFC' were best known as "freon's" and became famous as a safe, nonflammable refrigerant. It's invention became a great triumph when Freon took the place of sulfur dioxide or ammonia which was used as the working liquid in refrigerators. It eventually became widely used in automobile air conditioners and nontoxic propellants in aerosol cans. It's insulating properties also was used fo...
    Free research essays on topics related to: ozone layer, ozone molecules, ozone depletion, du pont, skin cancers
  • Harmful Effects Skin Cancer
    1,653 words
    Sunscreen (1) We are all aware of the effects that sunray's cause to our skin, if it is being exposed to them for too long. It only takes a few minutes of suns radiation being applied to protein in skins cells, to initiate tanning, which is actually the process of protein losing its organic essence. If we stay under the direct sunray's for too long, it will inevitably result in getting sunburn, on our part. In its turn, sunburn often initiates skin cancer. This is why healthcare specialists stro...
    Free research essays on topics related to: harmful effects, ultraviolet light, uv b, studies conducted, skin cancer
  • Mentioned Earlier Drug Administration
    1,656 words
    ... generation of reactive oxygen species, so called free radicals. However, the recent studies indicate that the amount of free radicals generated by the body, as the reaction to application of sunscreens, can be significantly lowered with the mean of increasing the consumption of Vitamin C. Apparently, it would be wrong to assume that we should not worry about the possible consequences of chemical sunscreens application, as we are being assured by their manufactures. Even though that claims of...
    Free research essays on topics related to: rating system, mentioned earlier, american journal, drug administration, side effects
  • Fatigue On Airline Pilots
    1,599 words
    Fatigue on Airline Pilots Airline pilots, especially those on international routes, often suffer jet lag fatigue caused by many hours of flying through different time zones. To guard against excessive pilot fatigue that could result in unsafe flying conditions, the FAA requires airlines to allow pilots at least 8 hours of uninterrupted rest in the 24 hours before finishing their flight duty. The work of test pilots, who check the flight performance of new and experimental planes, may be dangerou...
    Free research essays on topics related to: pilots, decision making, uv b, important factor, chronic fatigue
  • Uv Radiation Ozone Depletion
    993 words
    Our Radiant Planet- Depletion of the Ozone Layer Ozone is a relatively unstable form of molecular oxygen containing three oxygen atoms produced when upper-atmosphere oxygen molecules are split by ultra violet light. Stratospheric ozone is found in a broad band, extending generally from 15 to 35 km above the earth. Although the ozone layer is surprisingly thin, it acts as a protective shield to the earth, as it filters out most of the harmful solar ultraviolet radiation (in particular UV-B) that ...
    Free research essays on topics related to: ozone depletion, uv radiation, ozone molecules, earths surface, ozone layer
  • Ozone Layer Ultraviolet Radiation
    1,027 words
    Ozone is an important molecule in maintaining the homeostasis in the environment. Ozone, the molecule O 3, makes a layer in the stratosphere, situated 10 to 15 kilometers from the earths surface. The dioxide molecule, O 2 and Oxygen atom O, collide with each other result in the formation of Ozone, O 3. In this reaction, the molecule O 3 contains an excess of energy. Once the molecule is formed, it is not stable enough to last long. The energy-rich O 3 molecules discards the excess energy by coll...
    Free research essays on topics related to: uv b, ozone layer, skin cancer, ultraviolet radiation, earths surface
  • Stratospheric Ozone Ozone Layer
    2,496 words
    The Atmospheric Ozone Layer The stratospheric ozone layer exists at altitudes between about 10 and 40 km depending on latitude, just above the tropopause. Its existence is crucial for life on earth as we know it, because the ozone layer controls the absorption of a portion of the deadly ultraviolet (UV) rays from the sun. UV-A rays, including wavelengths between 320 and 400 nm, are not affected by ozone. UV-C rays between 200 and 280 nm, are absorbed by the other atmospheric constituents besides...
    Free research essays on topics related to: polar regions, ozone layer, ozone hole, stratospheric ozone, atmospheric circulation
  • Carbon Dioxide Ozone Layer
    1,519 words
    In environmental science the green house effect is a common term for the role water vapor; carbon dioxide and ozone play in keeping the earths surface warmer than it would normally be. The atmosphere is primarily transparent to infrared radiation from the sun, which is mostly absorbed by the earths surface. The earth being much cooler than the sun, remits radiation most strongly at infrared wavelengths. Water vapor, carbon dioxide and ozone then absorb much of this radiation and remit a large pr...
    Free research essays on topics related to: stratospheric ozone, carbon dioxide, earths surface, ozone molecules, ozone layer

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