Einstein once called quantum entanglement as 'spooky action'
In 1935, Albert Einstein called the then recent theory of quantum entanglement as "spooky action at a distance". It allows microscopic objects like photons to affect each other's state across arbitrary distances without any direct physical interaction. However, Finnish researchers have now shown that two hair-wide vibrating drumheads, visible to the naked eye, can display "spooky action" as well.