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TeachMeFinance.com - explain electromagnetic wave electromagnetic wave The term 'electromagnetic wave' as it applies to the area of Earth observation can be defined as ' Method of travel for radiant energy (all energy is both particles and waves), so called because radiant energy has both magnetic and electrical properties. electromagnetic waves are produced when electric charges change their motion. Whether the frequency is high or low, all electromagnetic waves travel at 300,000,000 meters per second'.
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