There are always more Rube Goldberg machines in the archives.
Showing 31 posts tagged gravity
Sea Level! What is it and how do scientists calculate it? As it turns out, there are actually many complexities in determining this measurement. For example, Earth isn’t actually a sphere, gravity is stronger and weaker at different points around the globe, and of course, there are a lot of mountains that are no where near water — so how do we know what sea level would be? In this video, Minute Physics explains the details.
After you’ve watched, check out these related links: ellipsoid, geoid, geodesists, Mount Everest, Chimborazo Volcano, Space.com’s Best Gravity Map Yet Shows a Lumpy, Bumpy Earth, and this clarifying and not-to-be-missed animated gif of Earth’s gravity field.
What would the moon look like if it was at the same distance from Earth as the International Space Station? (That’s 240-ish miles above our planet instead of its usual 238,900 miles away.)
While the physics would make this rather undesirable — likely breaking the moon into Saturn-like rings and generally messing with Earth’s liquids, atmosphere, etc, — it would look pretty amazing if it was possible. Amateur astronomer Yetipc1 imagines it would look something like this slightly sped-up simulation, though the moon breaking apart and forming rings around Earth would also be pretty cool.
"Physics told me some crazy stuff. Say, I’m not just sitting here doing nothing. I’m actually fighting against Earth’s gravity. And I’m not sitting still. I’m spinning at a thousand miles per hour, or even more than that… 67 thousand miles per hour, if you count the rotation of the Earth around the Sun…"
In this graduation project that sums up her efforts in a dual degree program (animation and physics) presented by Brown University and Rhode Island School of Design, this is Xiangjun Shi's Why Do I Study Physics?
Follow this up with Vi Hart’s Doodle Music.
Scott Weaver’s Rolling through the Bay, an homage to the city of San Francisco, is made of over 100,000 toothpicks and Elmer’s glue, and was built over 35 years time. This structure was temporarily featured and filmed in The Tinkering Studio at the Exploratorium a few years ago. If you’re in or visiting San Francisco, put The Exploratorium at Pier 15 on your must-do list. It’s amazing.
You can see photos of Weaver’s structure at Where Cool Things Happen. And there are more cool structures in the archives, including K’nex Clockwork, some excellent wood marble machines, and DIY paper rollercoasters.