Physics, 10.07.2019 23:30 tagerryawilson6
Take a piece of cardboard and make a thin cut in it with a sharp razor blade, a razor blade carpet knife will do. look at a light source through the slit. you should see a series of dark lines (called interference fringes) appearing through your slit. repeat this experiment with two very closely spaced slits. could these fringes appear if light had only a particle nature? explain in terms of the wave property of light. 1. while sound is not an electromagnetic wave it does have energy like electromagnetic waves. many of us have performed the experiment in which sunlight is focused onto a paper on fire illustrating the energy in light. to see the energy of sound waves, hold a tissue in front of the speaker of a stereo system. shut the doors and windows so the tissue remains still. switch on the stereo and turn up the volume. does the tissue remain still? explain the results. 2. piece of paper with a magnifying glass.
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