OK, you want to view the Sun or an eclipse, but you don’t have an approved solar filter for your telescope. Maybe you don’t even have a telescope. No problem! I’ll bet you have a cardboard box. That ...
You don't need fancy glasses or equipment to watch one of the sky's most awesome shows: a solar eclipse. With just a few simple supplies, you can make a pinhole camera that lets you watch a solar ...
Pinhole cameras are not new; they have been around since the beginning of photography. The concept was around long before that. The ancient Chinese and Greeks understood the notion of a pinhole device ...
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