Click here to see the latest start time for this test. The TSI Assessment is a college readiness test delivered through the Accuplacer system, specifically designed by the College Board to meet the requirements set forth by the Texas Legislature and the Texas Higher Education Coordinating Board (THECB).
7.2 The spectrum of the sun Visible light and infrared radiation constitute the major fraction of solar radiation reaching the atmosphere of the Earth (Fig. 7-1). Approximately 40 % of the radiation energy is visible light of wavelengths between 400 and 700 nm.. Visible Light and UV Radiation 75 Effects of the ozone layer Ozone, O 3, is produced when oxygen, O 2, in the upper atmosphere absorbs UVC (Î»). This absorption completely eliminates UVC from the solar radiation and dissociates oxygen molecules to oxygen atoms.
Since visible imagery is produced by reflected sunlight (radiation), it is only available during daylight. One of the major advantages of visible imagery is that it has a higher resolution (about 0.6 miles) than IR images (about 2.5 miles), so you can distinguish smaller features with VIS imagery.n the infrared (IR) channel, the satellite senses energy as heat. The earths surface absorbs about half of the incoming solar energy. Clouds and the atmosphere absorb a much smaller amount. The earths surface, clouds, and the atmosphere then re-emit part of this absorbed solar energy as heat.