ERTH 20 Lecture Notes - Lecture 14: Electromagnetic Spectrum, Radiant Energy, Radiography
13 Oct 2020
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Document Summary
Sun is the only significant source of energy for earth"s atmosphere. Energy is also released from inside earth, primarily from radioactive decay of elements such as uranium (238u), thorium (232th), and potassium (40k). Energy can be transferred through earth to be eventually released at the surface. Energy is released on the ocean floor through hydrothermal vents, although probably not enough to influence the atmosphere significantly. The sun is a prodigious generator of energy. it produces more energy than the amount used by humankind since civilization began. Electromagnetic radiation: form of energy the sun gives off. (sometimes referred to as radiant energy). We experience different kinds of electromagnetic radiation every day: visible light, microwaves, x-rays, and radio waves are all forms of electromagnetic radiation. electromagnetic fields. the electrical charges that form them. Electromagnetic radiation entails the flow of energy in the form of waves. Waves of energy move through space by way of rapidly oscillating.
