BTEC unit 2 p6
The Laser

there is also a link work a look at

Doctors in Glasgow have been given the go ahead to inject stem cells from human foetuses into the brains of patients who have suffered strokes. It is hoped that these stem cells will develop into nerve tissue and improve brain functioning in these patients. Anti -abortionists have described this as ’sick’. What do you think?

mouse stem cells

Can you explain why a pencil in a glass of water looks bent? Homework is on page 12. Try this experiment at home.
Bending Light