It is a gesture of friendliness, and a token of friendship.
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
In an electromagnetic wave, the electric and magnetic fields are perpendicular to 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.
When a red wave and a blue wave interfere constructively, they combine to form a purple wave. This occurs when the peaks of the red wave align with the peaks of the blue wave, reinforcing each other and creating a larger amplitude purple wave.
They wave and say Hi!
with a sine wave