Question 1 • Reed Fall 2026 Physical Science 2nd Semester (7th Hour)
Electromagnetic waves can travel through empty space at the speed of light, and they consist of changing electric and magnetic fields that sustain one another. They travel in straight lines through a uniform medium, can reflect off surfaces, and can bend around objects through diffraction. They do not travel only through space: they can also pass through some matter. They do not require particles bumping into each other.
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