Science, Maths & Technology
Measure the Pulfrich Effect
...German physicist called Carl Pulfrich. This is a very simple effect to demonstrate, and to try it for yourself you need just three things: a length of thin string or thread at least two metres long a weight to tie on the end (e.g. a bunch of keys or a small kitchen utensil) a pair of sunglasses You might also like to collect the equipment you will need for the later part...