I'm back for my second Blind Guy Unboxing and unlike the first box that came from Brian in Dublin, Ireland, this box from a fan named Art was full of some pretty brutal stuff…and also some pretty ...

An object is something that you can touch. A material is what the object is made from. When we choose a material, we need to select the right one for the object it will finally become. For example, ...

Fran: I am looking at my reflection. When light from an object is reflected by a surface, it changes direction - it bounces off the surface. So, if we shine this light onto this mirror, then we can ...