Yep, repeating my warning here:
Sun - Wikipedia, the free encyclopedia
ATTENTION:
This is both a warning and disclaimer. Looking directly into the sun is a POTENTIALLY DANGEROUS activity. I believe a pair of strongly tinted sunglasses can do the trick, kay late afternoon na man, however, I DO NOT RECOMMEND IT. Therefore, I STRONGLY SUGGEST you use WELDER'S GLASS. You can buy these sa hardware store, barato ra man siguro ni.
Again, you have been cautioned. Please do not blame me if something happens to your eyes--I already gave out the precautions!
SAFETY UPDATE:
1) Colored Water Cellophane is NOT acceptable. While you feel it's comfortable, harmful infrared/UV radiation can still damage your retina. I'm using colored Cellophane ONLY for photography purposes.
2) There is another way to view the event indirectly and SAFELY. All you need is a piece of cardboard, some aluminum foil, a needle, and a piece of bond paper.
Get two pieces of cardboard--one piece colored white to project onto. Cut a square in one cardboard, then tape a piece of foil over the square. Now make a pinhole in the middle of the foil.
With the sun behind you, hold the pinhole cardboard as far from the white cardboard as you can. Remember, the farther you are from the screen, the bigger your image. (from
Exploratorium: the museum of science, art and human perception )
-RODION