We have been learning a lot about waves in class. Pretty
much all energy is in the form of waves. When someone is talking to you, it
isn’t the air coming out of their mouth that is going to your ear, but the
“waves” of energy they are producing from their vocal chords. The air is just
the medium the wave energy travels through. This past week we have been
focusing on wave super position and how waves react when they hit each other,
other stuff. The principle of super position states that two wave energies can be in the same place at the same time
and interact with each other. When two waves are in the same place at the same
time, it alters their amplitudes. When the waves have equal frequency, with
opposite phase, it causes destructive interference (the waves flatten out while
they are together). When the waves have equal frequency, with same phase, it
causes constructive interference (2x the amplitude while they are together).
The picture above is the big guy
himself, doin’ work at sandy’s. As one wave reflects (bounces back) off the
shore and goes back out to sea, another wave comes in towards shore. The waves
both have the same phase, so when they reach the same place at the same time,
constructive interference happens. This means that for a moment, both wave’s
amplitudes are added together, resulting in “super” wave.
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