News

Actions

Make a pinhole camera to watch the eclipse safely

Posted at 11:11 AM, Aug 16, 2017
and last updated 2017-08-16 11:11:46-04

(RNN) - The special glasses you need to view the Great American Eclipse are in short supply, but if you haven’t gotten a pair yet, relax. 

Build a pinhole camera. It’s easy. You can probably find everything you need in the closet and a few kitchen drawers:

  • A cardboard box
  • Tape, preferably dark and opaque
  • A box cutter or a real sharp knife
  • Scissors
  • Aluminum foil
  • A piece of white paper
  • A pencil and a ruler
  • A tack or needle to punch a small hole in the tinfoil

I could describe how to make it, but why not just watch the video?

Pro tips: Make it a few days before the eclipse so you can test it. Make sure you have plugged all “light leaks” so the inside of the box is completely dark. Measure twice, cut once.

Warning: Science ahead

The image you will see on the screen inside the box will be flipped, like in a mirror, and upside-down. That’s because light waves bend when they pass through a lens – the pinhole is a simple lens. The beams will converge to form the image you see. More here.

Copyright 2017 Raycom News Network. All rights reserved.