This superhydrophobic coating is truly stunning
NeverWet is a patent-pending silicon-based covering that deflects nearly all liquids and heavy oils by creating a very high contact angle upon application. The angle is much higher than traditional substrates, such as car wax (90 degrees), Teflon (95 degrees), or Rain-X (110 degrees). Liquid literally glides off NeverWet’s 160 degree to 175 degree angle in a way that almost seems like computer animation
JAW DROPPING Space Station time lapse!
Click the HD and watch in full-screen.
There’s a DIY explanation at Cute video of kids DIYing their own penny battery, where I saw the video, but I found a higher-resolution copy, along with some other DIY battery projects, in this pdf
The how-to-build article, which includes a link to a paper describing the math and physics behind the phenomenon.
Commander of all of those dog robots, by the inventors of big dog.
This Model of Stephenson’s Steam Engine was made in 2008 by master glassblower Michal Zahradník.
One nit: at about 1:40 it says to notice the steam exhaust — steam is water vapor and is invisible, so you can’t notice it. That’s one reason that steam line ruptures are so dangerous. If you can see it then the water has begun to condense; what you can see are small water droplets.
I did not know there was a focus assist button on (some) video cameras.
I tried doing a similar demo, but used a beaker and it’s a lot harder to place the objects in so that they will float. Which is why I don’t have a video like this.
A clock display, anyway. No, it’s not really practical.
Not sure if the arm-wave is just to be cute or if it’s programmed in to help locate the biker when it’s not moving, e.g. if it got stuck somewhere or lost the signal.