What does it mean to be 'quantum?' A physicist explains the basics behind Einstein's spooky actions at a distance

Imagine shining a flashlight across a dark room. You can predict exactly what the light will do: travel in a straight line from one point to another. That seems obvious because, in the world we see around us, light appears to follow a single, clear path. This story matters for Science & Discovery readers tracking engineering. Reported by phys.org. Read the full original at the source link below.