Above your head you can see a cloud, imagine it as a spherical shell.
It can get excited and deexcited – then it is shining, like a sun. It trembles.
If electron is wave-like.
Particle. An electron resembles a little planet that is orbitting the nucleus.
Nucleus is a planet, where you are standing. The motion of electron is periodic, it
wanders along spherical curves – like the Moon orbits the Earth.