Find a room with a Sun-facing window, turn out any lights, and pull the shades. ![]() This lets you use a small pinhole giving a sharp image.Ī much better way to do pinhole projection can be arranged at a window indoors. A large hole makes the image bright but fuzzy a small hole makes it dim but sharp.įor a better view, you can reduce the amount of daylight shining on the viewing card by enclosing it in a long box (left). This image will go through all the phases of the eclipse, just as the real Sun does. The hole will project a small image of the Sun's disk onto the lower card. ![]() Poke a small hole in an index card with a pencil point, face it toward the Sun, and hold a second card three or four feet behind it in its shadow. The simplest safe way to view a partial solar eclipse is to watch the Sun's image projected onto a piece of paper. Fortunately, there are many easy ways to watch the show safely. ![]() The result can be "eclipse blindness," a serious eye injury that can leave temporary or permanent blurred vision or blind spots at the center of your view. The danger that a partial solar eclipse poses is simply that it may prompt people to gaze at the Sun, something they wouldn't normally do. Looking at the Sun is harmful to your eyes at any time, partial eclipse or no. ![]() This view of the partially eclipsed Sun was made through a metal-coated glass filter, which produces a yellow or orange image of the Sun most aluminized Mylar filters give a blue image.
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