Feb 25, 2022
Nature of Light
-- light is electromagnetic radiation
-- electromagnetic radiation -- type of energy -- embodied in oscillating electric and magnetic fields
-- magnetic field = region of space where a magnetic particle experiences a force
-- electric field = region of space where an electrically charged particle experiences a force
-- in a vacuum, these waves move at 3.00 x 10^8 m/s
-- waves could circle Earth in 1/7 seconds
-- sound travels slower than light
-- sound travels at 340 m/s
-- ex: fireworks -- light is seen almost instantly -- sound travels slightly slower -- sound reaches you later
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