Photo Mug . Magnifying glass. The glass lens is polished to an exact shape to produce a clear image. It magnifies the view of an object because the shape of the lens is convex, refracting light from a...
Photo Mug . Flint Glass Prism refracting the colour spectrum. Computer artwork. A narrow slit of light is focussed towards the prism which refracts the light into the colour spectrum. In Isaac Newton ...
AdvantagesGood quality, stylish, practical, easy to use.
AdvantagesDoes what it says on the tin
DisadvantagesLeaks a little if not kept upright
AdvantagesQuirky design, great price, ideal for parties
DisadvantagesNone at all from me