3.19 INVESTIGATING REFRACTION

Angle of incidence i	Angle of refraction r	sin i	sin r	sin i/sin r
50	32	0.77	0.53	1.453
40	26.5	0.64	0.45	1.422
70	40	0.94	0.34	2.765
10	8	0.17	0.14	1.214

3.17 REFRACTION

:: AIR HAS LOW DENSITY
:: GLASS HAS A HIGHER DENSITY THAN AIR

when light moves from an area of low density (air) to an area of higher density (glass), the light ray bends towards the normal, and the opposite when the light ray moves from an area of high density (glass) to an area of low density (air) the light ray bends away from the normal.
the bending of light rays when it moves through a medium to another is called refraction.

low density -----> high density = bends towards normal
high density -----> low density = bends away from normal

investigating reflection

angle of incidence is equal to angle of reflection

i = r

objective 3.16 Plane mirrors

For plane mirrors, the image is...
-     the same size as the object
-     The same distance as the object from the mirror
-     Virtual (not real)
-     Upright
-     Laterally inverted