Hanging around: this image shows where an electron is most likely to be found in an exciton. Yellow indicates high probability and blue low probability. The hole is located at the centre of the ...

Electrons were once thought to orbit a nucleus much as planets orbit the sun. That picture has since been obliterated by modern quantum mechanics. When you purchase through links on our site, we may ...

Free electrons moving through space are fundamental and indivisible: they are not built up of smaller particles, in contrast with protons and neutrons. However, within materials, interactions among ...