[hutzlibu]

This debate is very old. Newton and Huygens fought long over it .. and eventually it was solved by: it is both or rather neither. It is a quant.

https://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality#...

[fennecfoxen]

A "quant" is someone who studies quantitative finance, typically found in investment fields. The word for this wave-packet with particle properties is "quantum". It is a singular noun; its plural is "quanta".

[hutzlibu]

Thx. Not a english native speaker. In german it would be just "quant".