by: Gordon R. Gore
BIG Little Science Centre
Educational Innovations has a new product called Gigantic Growing Spheres (Catalogue #GB-760) which physics teachers might find useful for illustrating internal reflection. These are a very large version (about 6 cm) of the Growing Spheres (also called Jelly Balls) discussed in earlier issues of BIGScience*.
Basic Equipment Needed
1 green* laser pointer (* works much better than red)
1 fully grown ‘Giant Growing Sphere’ (about 6 cm diameter)
Posted by Tami O'Connor