Science: invisible light (infrared)
Thursday, March 23, 2017

Do now: What causes refractions? What happens as waves go around a barrier? 

invisible light reading and questions 
Invisible: not able to be seen by the human eye 
Infrared: electromagnetic radiation with a  wavelength longer than visible light(but less than microwaves). 
Exit ticket: you are sitting on the edge of the pool with your legs in the water. It appears that your lets are bent beneath the water. How can you explain this?