Rainbow Science

When we think of the luck of the Irish and St Patrick's Day rainbows always come to mind. Here is a neat rainbow science experiment.



YOU WILL NEED

Wide-mouthed, smooth, circular glass jar or
large plain drinking glass filled with water
Small mirror
Flashlight


HERE'S HOW

1. Place the mirror inside the water-filled jar. Tilt the
mirror slightly upward.

2. In a very dark room with white walls, shine the
flashlight onto the mirror. A rainbow appears! (Hint: If
no rainbow appears at first, just change the angle of
light from the flashlight or change the angle of the
mirror.)



WHY?

The mirror reflects light that passes back through the
water, traveling at an angle. The water refracts, or
bends, the light. As light bends, it separates into the
colors of the rainbow—red, orange, yellow, green, blue,
and violet.


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2 Responses
  1. Neat trick, thanks for the tip. I will definitely show this one to the kids. Although you forgot one of the colors, indigo. Thanks again.

    Take care, Elli


  2. Cool. Can't wait to try this one withthe little guys. By the way...How do you get the digg markers to show up on each individual post. I have been trying to do it for months. :)


 
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