There are always more Rube Goldberg machines in the archives.
Showing 340 posts tagged science
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.
Meet Siats (pronounced SEE-otts) Meekerorum, the first giant mega-predator to be discovered in North America — specifically in the Utah desert — in over 60 years. In this Untamed Science video, we hear from Dr. Lindsay Zanno, Director of the Paleontology & Geology Research Laboratory at the North Carolina Museum of Natural Sciences, who explains how this 30 foot long, 4-ton, carnivorous creature flourished in the tens of millions of years before T-Rex ruled.
via Scientific American.
How is snow made? What temperatures make different kinds of snow? And can two snowflakes look exactly alike? The Science Channel has a quick Snow Facts Cheat Sheet video for questions just like this.
There are more nonidentical snowflakes in these videos that feature snow.
Above, watch molten gold transform into gold leaf as it is beaten into thinner and thinner pieces while cold. This clip is from PBS’ six-part miniseries The Ring of Truth: An Inquiry Into How We Know What We Know - Atoms (1987).
"It was the craftsmen who mastered the remarkable properties that go with specific materials. They were the first to journey towards the atom. The goldsmiths slowly refined their craft to take advantage of what gold alone could do…”
MIT astrophysicist and Institute Professor Philip Morrison narrated the series, which he co-wrote with his wife, noted art and science educator Phylis Morrison. Philip Morrison also narrated and wrote the script for Charles and Ray Eames’ Powers of Ten, a must-watch video for all ages.
via Emily Lakdawalla.