dot physics
Space Elevators Could Totally Work—if Earth Days Were Much Shorter
Albert Wagner
Suppose you could speed up Earth’s rotation so that a day was only half as long? What would happen? Well, ...
Is Using a Stair Machine the Same as Climbing Stairs?
Albert Wagner
Since the change in kinetic energy is still zero, this means that the positive change in gravitational potential energy is ...
This Famous Physics Experiment Shows Why the Government Should Support ‘Useless’ Science
Albert Wagner
The lighter creates a tiny spark that jumps from one wire to the other in the front pair. This spark ...
The Physics of the Macy’s Thanksgiving Day Parade Balloons
Albert Wagner
If you double the radius of a balloon, you increase the volume by a factor of eight (since volume is ...
The Incredible Physics of Simone Biles’ Yurchenko Double Pike
Albert Wagner
A gymnast can actually perform both of these types of rotation at the same time—that’s what makes the sport so ...
If Betelgeuse Explodes, Just How Bright Will It Get?
Albert Wagner
Theres a famous star that I’m sure you’ve seen in the sky. Its name is Betelgeuse, and you can find ...
