A Fundamental Principle of Aeronautical Engineering Has Been Overturned
It’s long been accepted that the smoother the surface, the lower the aerodynamic drag. That turns out not always to…
All the Fancy Measuring Devices Used in Science Rely on Two Stone-Age Techniques
The multifarious methods we use to gather experimental data ultimately boil down to counting or comparing.
Build a Radio Wave Detector With Balls of Aluminum Foil!
Here’s how you can hack together a radio transmitter and receiver out of stuff you have at home—and explore the…
Do Lightsaber Blades Have Mass?
On Star Wars Day, we put to rest a question that has bedeviled sci-fi nerds for years.