In several crash tests, the battery on a Chevy Volt began to heat up or burst into flame. The battery problems happened a few days or weeks after the impact and the National Highway Traffic Safety Administration is investigating. (One potential factor: NHTSA testers didn't drain the batteries of juice after the crash, which is recommended. As a comparison, it's standard practice to drain a gas tank after a similar collision. So this could be an issue of new technology learning curve.) If you want to better understand why a battery that's been through a car accident could burst into flame, I'd recommend reading this piece by the Midwest Energy News. It's a nice summary of how lithium-ion batteries work, and how they respond to damage.
Don't try this. Dianna from Physics Girl showed how under highly controlled conditions it's possible to dip one's hand into boiling oil without injury. The video is unlisted and age-restricted to keep children and dummies from trying to replicate the physics demonstration that's often done with molten metal. Image: YouTube / Physics Girl READ THE REST
Because Trump is an enemy of science. "Scientific American has never endorsed a presidential candidate in our 175-year history—until now," tweeted the publication today. "The 2020 election is literally a matter of life and death. We urge you to vote for health, science and Joe Biden for President." Excerpt: The evidence and the science show… READ THE REST
Reindeer herders in the Russian Arctic's Lyakhovsky Islands found a preserved carcass of a cave bear frozen in the ice between 22,000 and 39,500 years ago. From the North-Eastern Federal University in Yakutsk: [North-Eastern Federal University} scientist Lena Grigorieva said of the island discovery of the adult beast: 'Today this is the first and only find… READ THE REST
You can never have enough power. While that sounds like a line from Niccolo Machiavelli, it's also the regular refrain from pretty much anyone with a mobile device. It seems like no matter how long you charge up before you leave the house, it doesn't take more than a few minutes of texting, map directions… READ THE REST
"Build a better mousetrap, and the world will beat a path to your door." That century-old quote from Ralph Waldo Emerson (sort of) is just as true today. If you build a better product, offer a better service or create a better infrastructure for customers, then with a bit of time and attention, the world… READ THE REST
Remember back in the way, way, way back 1990s? Remember when you and everyone you knew had a radio alarm clock positioned right on your bedside table? You know, the one with that super irritating squawk of an alarm? You can still hear that ugly beast in your nightmares, can't you? Time hasn't been kind… READ THE REST