Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI Science Center. Sutter is also host of the podcasts Ask a Spaceman and RealSpace, and the YouTube series ...

Introduction Have you ever seen video footage of an avalanche or landslide rolling down a hill? Why is it that at one moment everything seems fine then suddenly the mountain begins to slump? This ...

Introduction If you wanted to measure the circumference of Earth, how long would your tape measure have to be? Would you need to walk the whole way around the world to find the answer? Do you think ...

You’ve no doubt heard the carpentry proverb “Measure twice, cut once” and may even have made it a mantra for your own projects. But unless you know how to use a tape measure and correctly read its ...

If you’re doing something like setting posts on a slanted surface, you’ll likely need to measure the exact angle at which to cut their base so that they stand perpendicular with the ground. But you ...

On the night of May 22, 1453, the people of Byzantium could see an eerie red shadow cross the Moon. It was a partial eclipse–the Earth had gotten in between the Sun and Moon–and the Byzantines took it ...

Angle of Spatula(θ Sp): Immerse a plane in the powder pile, pull up the plane vertically. The angle of spatula is the average between the angles formed of powder pile on the plane before and after ...