Video: water appears frozen in sine wave

A beautiful video of sound curiously affecting a stream of water, visible thanks to a camera recording at 24 frames-per-second. The speaker generates a 24 hz sine wave that vibrates the water while the camera recording at 24 fps make the stream appear to "freeze." (Thanks, Koshi !)

Scientific American endorses Joe Biden, breaking 175-year tradition of never endorsing a presidential candidate 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

Scientists find preserved cave bear frozen more than 20,000 years ago 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

Possible sign of life on Venus Astronomers reported today that they've detected phosphine in the atmosphere of Venus, a possible biosignature of life on the planet. The researchers from the Massachusetts Institute of Technology, University of Manchester, and their colleagues published the news in Nature Astronomy and in another paper submitted to the science journal Astrobiology. From the New York Times: […] READ THE REST

Electrical engineering is one of the most stable professions around, and this training can help get you there When you were a kid, your mom and dad probably told you to grow up and become a doctor or a lawyer. Practical people that they were, your parents probably assumed that if you were able to scale the educational heights of those revered professions, you'd be handsomely rewarded with a hefty paycheck. While you […] READ THE REST

The Jamstik lets you practice your guitar skills anytime, anywhere A decent starter electric guitar will often run you about $500 nowadays. If you'd rather learn to play before you dump hundreds into a cool instrument, the Jamstik Guitar Trainer is a brilliant way of turning you into a guitar player without the huge upfront expense. In addition to saving you money, the Jamstik has […] READ THE REST