barkergk

Instructables

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  Aquarium Scraper for Stubborn Algae

  11 2.9K
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  Aquarium Robo Brush

  13 2.5K
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  35mm Slide Converter for Cellphone

  517 143K
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  This Seismometer Is No Toy!

  162 104K
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  More Cool Physics With a Smart Phone

  11 2.8K
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  Advanced Scratch Hologram Techniques

  33 5.4K
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  Scratch Hologram Detailed Instructions for Teachers

  186 16K
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  Polarized Light Microscopy Reveals Hidden Beauty in Everyday Substances

  10 1.5K
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  Heisenberg Uncertainty Principle Party Trick

  14 3.0K
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  Cool Physics With a Smart Phone

  13 4.5K
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  Speed of Light Using Purchase Receipts

  7 1.4K