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Sugar and Sulfuric Acid - Cool Science Experiments with Home Science-xK

Jet Engine in a Jar - Jam Jar Pulse Jet Engine - Amazing Science Experiments-l-7Q

Smartphone 3D Hologram Projector - Turn your Smartphone into a 3D Hologram-5Z4X8

Make your own 3d hologram projector using CD case & smartphone-SKIdY-cO