To show that their hands are free from weaponry.
The Least We Can Do Is Wave to Each Other was created in 1970-02.
People wave to visually say hi or bye to each other from a far distance. People also use waving to get someone's attention. It has been around for so long that people just do it.
They cancel each other.
milky wave is when ther is to poscents of gravity hits each other
decreases or cancels out, resulting in a wave with smaller amplitude or no wave at all. This occurs when the crests of one wave align with the troughs of another wave, causing them to partially or completely cancel each other out.
Standing wave If they do a great job, the wave practically disappears.
Destructive interference occurs when two waves combine to subtract from each other, resulting in a wave with reduced amplitude. This happens when the peaks of one wave align with the troughs of another wave, causing them to cancel each other out.
with a sine wave
They wave and say Hi!
When a combination of waves come together to form a larger wave, it is called interference. Interference can be constructive, where the waves reinforce each other and the resulting wave is stronger, or destructive, where the waves cancel each other out and the resulting wave is weaker.
Interference means two waves meet each other. If the waves are in same phase, they'll enhance each other, creating a bigger wave or a bigger maximum at that point. If they are in opposit phase, they'll undo each other either fully or partially. This is called an destructive interference wave.