HW for Wednesday

Trig practice (if you need/want it):

1.  Find:  

sin 0

sin 30

sin 45

sin 60

sin 90

2.  Find the angle with these sine values:

0.1

0.3

0.75

1

Snell's law

3.  A red light (632 nm = 632 x 10^-9 m) hits a block of glass (n = 1.5) at an angle of 30-degrees (with respect to a normal line).  Draw a picture to represent this, and then find the following:

a.  the angle of refraction inside the glass

b.  the speed of light outside the glass

c.  the speed of light inside the glass

d.  the frequency of light outside/inside the glass

e.  the wavelength of light inside the glass

4.  Draw three parallel lines hitting the side of and refracting these optics:

a.  convex lens (thicker in the middle)

b.  concave lens (thinner in the middle)

5.  Write down anything that still confuses you.