Just because it's the weekend doesn't mean you have to switch your brain off completely. Smarter Every Day continues its video series on the physics behind helicopters with a look at how choppers use something called a swashplate to vary the pitch of its rotor blades to climb higher and fly in any direction.
So How Does The Horizontal Spinning Blade On A Helicopter Propel It Forward?
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There was a stark juxtaposition outside of Sydney's Town Hall before Wednesday's climate rally: as thousands of protesters gathered in the hour preceding the event, a giant Christmas tree loomed over them while people dressed in clashes of red and green, some in Santa hats, hurried to seasonal parties and pub crawls.
We’ve all seen the peculiarly-designed Tesla Cybertruck on stage and driving on a short course during its debut last month. But if you’ve been wondering what the vehicle looks like on public roads, especially next to standard, run-of-the-mill cars, the answer is: absolutely absurd. Take a look.