Can light travel round light corners?

Answer 1

In most cases that you will run into, no. However, there are exceptions, such as if you put a mirror in the way so as to reflect the light around a corner or if there is a huge gravity well bending space, like near a micro black hole or some such thing.

add. But the easiest way to make light go round corners is with a optical fibre. But really, this simulates a series of near-perfect mirrors.

add. Both these people are wrong, Light is an electromagnetic wave and does bend around corners, this phenomenon is called refraction. the degree to which the light can bend is based on it's wavelength, generally the longer the wavelength, the more an observer is able to "see" the light around the corner. a perfect example of this is to fix a laser pointer and shine it on to a human hair held taught, behind it some distance have a white surface. without the hair in the way, you would see 1 dot. but since the light refracts around the hair, you see a series of dots