Why has the atomic models changed over time? ?

J.J Thomson had discovered that atoms were not the smallest particle, electrons were. ... The Planetary Model is a modified version of Thomson's model, but the electrons are orbiting the nucleus, like the plants to the sun. Ernest Ruthford found that the atom is a positively charged core with negatively charged electrons.Nov 29, 2013

I hope this helps

The sunlight shines uv radiation on earth,a microwave oven radiates waves on food