14Shiny surfaces wall mirror Light is reflected as a beam and can be seen on the wall.
15Move the mirrorwallThe light reaches a different place on the wall.
16Look in a mirrorLight is reflected.You can see a reflection.
17Change the direction of the light beam Light is still reflected.You see a reflection- in a differentdirection.
18Multiple reflectionsThe lamp hangs between two large mirrors on opposite walls.The reflection in the first mirror is reflected in the second mirror, which is reflected again in the first mirror - - -
37Uses Lasers- produce very bright beams of light. CDs use laser light The atoms all give out their light togetherCDs use laser lightand reflection-
38CDs The surface has tiny pits and smooth bits spiralThe surface has tiny pits and smooth bitsin a spiral patternthe pits scatter light from a laserthe smooth bits reflect the lightso a coded message is read.