Particles and waves.

Can one particle act as a wave or does it take many particles to create a wave?

Tau.Neutrino said:

Particles and waves.

Can one particle act as a wave or does it take many particles to create a wave?

Particles are (actually, de Broglie says everything is) both particles and waves at the same time. They’re not one or the other. Bohr’s Complementarity Principle says that they can only be measured as one or the other.