03-08-2016, 12:04 PM
I have often made pinhole projectors, even when I had to do field work & wanted to know what was happing with the sun
Make a small hole in a pice of cardstock, stiff plastic, sturdy aluminum foil (hence pinhole, but can be larger, just have to adjust the length of your projection)
with the hole aligned with the sun, project the image onto a light sheet of paper, wall, concrete.... you will need to work the system to project the sun through the pinhole & on to the light colored surface..only look at the light surface & you will be working with a shadow....
http://www.timeanddate.com/eclipse/make-...ector.html
Make a small hole in a pice of cardstock, stiff plastic, sturdy aluminum foil (hence pinhole, but can be larger, just have to adjust the length of your projection)
with the hole aligned with the sun, project the image onto a light sheet of paper, wall, concrete.... you will need to work the system to project the sun through the pinhole & on to the light colored surface..only look at the light surface & you will be working with a shadow....
http://www.timeanddate.com/eclipse/make-...ector.html