physics

electroosmotic pumps

I was reading up on microfluidics and was reminded of electroosmotic pumps. They’re pretty cool. Here’s how they work. From the University of Washington Another common technique for pumping fluids is that of electroösmotic pumping. If the walls of a microchannel have an electric charge, as most surfaces do, an electric double layer of counter [...]

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how to measure the volume of an object

I recently had the need to measure the volume of an object to see how it compared to the CAD database. Think for a second. How would you do it? … … … The first approach I thought of was: Get a container Fill it with water Mark the height of the water Submerge the [...]

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video: quantum levitation

Came across this today. They even tease you with just enough of a physics explanation to get you curious. How it works According to the website, the ceramic, once brought down to a low enough temperature, becomes a superconductor (more like a super-duper conductor as they claim zero energy loss). Now that it is a superconductor, [...]

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crayon physics

Quite possibly the best thing ever. I saw this technology a few years ago (I think it was MIT… can’t find the link). It appears it’s been commercialized, and commercialized well.  

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