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.