Category Archives: green laser

Play Dough Simplifies Interferometer Build

Posted on June 17, 2019 by Fernando Gomes

An interferometer sounds like something complicated, and in a way, it is. But it is also pretty easy to build one with some common materials. [Let’s Innovate] has instructions for how to make an interferometer using a green laser pointer, some mirrors, and a CD case. one of the most …read more

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Posted in green laser, interferometer, laser hacks, laser pointer, Michelson interferometer | Leave a comment

Worn Train Rails Get Judged by Laser

Posted on July 8, 2018 by Fernando Gomes

[Calango] is a railway technician, and for a school final project created the Rail Wear Surveillance Trolley (RWST) which is a delightfully designed device made mainly from PVC conduit with one job: travel down a segment of train track while shining a green laser onto the rail, and capture camera images. The trolley holds both the laser and the camera at just the right angles for the camera to capture a profile of the rail’s curved surface. The images are sent via Bluetooth to a smartphone for later analysis. Rail wear can be judged by checking how well the profile …read more

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Posted in bluetooth, green laser, laser, laser hacks, line laser, rail, serial camera, train track, transportation hacks | Leave a comment