How to Make Your Own Solder Flux
Learn how easy it is to make your own solder flux at home.
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Chemistry
Engineer Guy vs. The Atomic Clock
Here is the fifth video in Engineer Guy Series #4. The element of the week is cesium, as in “cesium fountain atomic clock.” Watching it, my jaw was on the floor by 0:20, as Bill opens by showing off the Symmetricom CSAC, which is the world’s first fully functional chip-scale atomic clock. It’s about the size of a quarter.
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Cool Superhydrophobic Surface Demos
A finger rubbed in superhydrophobic aerogels and submerged in water takes on a decidedly T-1000-esque appearance. And a droplet of water on a piece of paper treated with the same substance behaves more like a drop of mercury on a piece of glass. Definitely worth a click and a few eyeball-seconds.
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Engineer Guy vs. Aluminum and Titanium Anodizing
As much as I love Engineer Guy videos, I am especially partial to Series #4, because it is themed around the chemical elements—each installment features a different element and a remarkable bit of engineering based upon it. And this week my two personal favorite elements are in the spotlight. Though it is utterly common, today, […]
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Machinable HDPE Blocks From Milk Jugs
Nice “short form” Instructable from user mfoster, who heats milk jug pieces to 350°F, loose, in a pot of canola oil, before pressing them into blocks using a simple scrap-wood mold and a set of manual clamps.
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Ceiling Periodic Table
When high school chemistry teacher Scott Byrum noticed that the acoustic tiles in his newly-renovated lab were square, he saw a golden opportunity. Or, if you like, a palladium one.
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Oobleck for Potholes
A group Case Western Reserve University undergraduates have created a waterproof Kevlar-reinforced pouch filled with shear-thickening fluid that can be simply dropped into a pothole to effect a quick fix. Under its own weight, the goo flows to take the shape of the pothole. But when a car drives over, it thickens in response to the applied force and supports the weights.
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