Simple Experiments Show How Motion Is Equivalent to Heat

Simple Experiments Show How Motion Is Equivalent to Heat

Some of the most difficult (and most important) experiments in the history of physics had to do with making connections between different concepts. What about the connection between objects moving around (kinematics) and objects changing temperature (thermodynamics)? That was a tough one. It’s called the mechanical equivalent of heat and it was explored in 1868 by James Joule. The basic idea was to have a mass that moves down due to the gravitational force. This mass is attached to a

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So You Want to Harness Evaporation From a Manmade Lake

So You Want to Harness Evaporation From a Manmade Lake

Sometimes you come across crazy stuff on the internet. Just check out the Qattara Depression Project; the basic idea is to create a channel to let water from the Mediterranean Sea flow into the Qattara Depression, a giant low-lying area in Egypt. This would create an enormous artificial lake that would change the local climate. It’s a prime example of a massive geoengineering project. The project never got underway, probably because it would be too expensive. But I don’t want

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Bitcoin Will Burn the Planet Down. The Question: How Fast?

Bitcoin Will Burn the Planet Down. The Question: How Fast?

Max Krause was thinking of buying some bitcoin, as one does. But Krause is an engineer—mostly he works on modeling greenhouse gas emissions from landfills—so his first step was to run the numbers. He looked at price, of course, but also how fast the world’s bitcoin miners create new bitcoins and the ledger that accounts for them. And he looked at how much electricity that would seem to require. “I thought, man, this is a lot of energy,” Krause says.

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This apocalyptic video shows a dust storm engulfing the Arizona desert

This apocalyptic video shows a dust storm engulfing the Arizona desert

This video, which depicts what is known as a haboob, was filmed by professional storm chaser Mike Oblinski. With winds ripping an estimated 50-75 miles per hour, the dust storm took over an Arizona highway. The word haboob is derived from the Arabic word “haab” which means wind or blow.   Read more… More about Mashable Video, Arizona, Storm, Storms, and Storm Chasers Source link

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