Now let's start from seismologist. When they want to know what is going inside volcano they put around seismometers and analyze seismic waves. Such wave when it emerges on surface of earth is not one pure wave but many waves. It happen because inside of earth is grainy. At such places where grains adjoin wave is divided between grains and one wave is two waves but weaker.

If space is grainy there happen the same but with one small difference. Because at quantum level wave is moving at speed of light which is always constant it cannot slow down and get weaker. Therefore it is divided into exactly the same waves. That's why particle which is wave can be everywhere.

And at the end you are probably asking why I started from seismologist? Because I got that eureka moment watching program about their job at volcano. It's so simple...

Sligo 27 12 08