ATM OCN 101 Study Guide - Final Guide: Radiant Energy, Northern Hemisphere, Black Body
30 Oct 2014
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Radiative transfer: radiant energy- the energy transferred from the sun to your face, radiant energy travels in the forms of electromagnetic waves, electromagnetic waves. Move at 3 x 108 m/s (300,000 km/s) = the speed of light. Wavelength ( ) measured in 10-6 or micrometers ( m) Speed is measure of how far a wave crest moves is 1 sec. (all e-m waves have same speed) Frequency is a measure of how many wave crests pass a point in 1 sec. Short high frequency; long low frequency. Example in class: demonstration with projector cord- creating bigger waves takes less energy (move arm slower) and creating smaller ones requires faster arm movement, so more energy. Radiation and temperature: all objects whose temperature is above absolute zero emit radiation, energy originates from vibrating electrons, so the particular amount of. E-m radiation emitted by an object depends primarily on the temperature of that object: stefan-boltzman law.
