How to Make Your Own Solder Flux
Learn how easy it is to make your own solder flux at home.
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.
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.
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, […]
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.
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.
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.
