mechanical vibrations such as waves observed on the surface of water have been looked upon as an oddity since time immemorial, since the way that the waves are actually formed has been a mystery to most people. today, however, from work done by past researchers, there is a vast practical knowledge accumulated concerning mechanical vibrations, also known as wave phenomena
But it appears to rise and set because of the Earth's rotation on its axis. It makes one complete turn every 24 hours. It turns toward the east. As the Earth rotates toward the east, it looks like the sun is moving west.
I don't know if it is right kase based on research lang ito ;))