Attached Link: http://www.andrew-whitehurst.net/amb_occlude.html

If we're going after the textbook definitions of various CG terms, then it'd look more like this: **global illumination** refers to techniques that take other surfaces than the one to be rendered in account (as opposed to local illumination). Examples for global illumination techniques would be ray tracing, radiosity, photon mapping or light tracing. **radiosity** is a technique for rendering diffuse-to-diffuse light transport. By today's standards it's nothing spectacular and has some serious limitations (no arbitrary BRDFs, no specular light transport, requires changing the geometry). The technique of placing a large number of lights in a (half-)spherical setup is usually referred to as "light dome" and is rather similar to ambient occlusion (see the link) than radiosity. And remember, this is all relevant for the exam next week ;)