Discover how to build a simple DIY projector using everyday materials like cardboard and a small flashlight or laser pointer.
Introduction 00:10 Initial setting 00:50 Create Projection 01:50 Create light rays 02:21 Adjust the Blur of the Projection ...
Use a cereal box and items around the house to make a pinhole eclipse projector. — -- If your approved solar eclipse glasses didn't come in time or stores near you are sold out, it's not too late ...
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