Homemade Polariscope is Super Easy to Make

[Abhimanyu Kumar] was watching YouTube videos one day when he came across something called a Polariscope — After learning how it worked, he discovered you can make your own using household items! First off, what is a Polariscope? Well, put simply, it is a device that can show you the photoelasticity of a clear...
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Retro Chaser Sign Lights Up Your Life

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[Gnsart] builds props often used in the film industry. He’s created an amazing retro Vegas style light chaser sign. The sign was started as a job a few years ago. While [Gnsart] could handle the physical assembly, the cost of a mechanical light chaser pushed the project over budget. The sign project was cancelled...
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3D Acoustic Manipulation: Seeminly-Unreal Levitation Using Soundwaves

Wow. [Yoichi Ochiai], [Takayuki Hoshi] and [Jun Rekimoto] are researchers from the University of Tokyo and the Nagoya Institute of Technology, and they have just learned how to airbend. Using a series of standing ultrasound waves, it is possible to suspend small particles at the sound pressure nodes. The acoustic...
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Once, Twice, Three Times a Nixie

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Try as he might, [Localroger] can’t seem to throw away a certain board that started life in one of the first digital industrial scales, the NCI DigiFlex model 5775. He recently gave it a third career as a nixie clock with an alarm.[Localroger] says the board dates to about 1975. It’s all TTL, no microprocessor...
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I am NXT 3-Point Bend Tester. Please Insert Girder.

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Learning with visuals can be very helpful.  Learning with models made from NXT Mindstorms is just plain awesome, as [Rdsprm] demonstrates with this LEGO NXT 3-point bend tester that he built to introduce freshmen to flexural deflection and material properties. Specifically, it calculates Young’s...
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NeverWet on Electronics?

Does NeverWet work on electronics? The team over at Adafruit just had to find out — and to an extent, it does work! But wait, what’s NeverWet? It’s Rust-Oleum’s miracle water-repelling coating which is super hydrophobic. It actually works, and we’re kind of surprised we haven’t seen it used in a hack yet! Anyway,...
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