Photosynthetic organisms capture energy from the sun and matter from the air to make the food we eat, while also producing the oxygen we breathe. In this Snack, oxygen produced during photosynthesis ...
Measure the efficiency of solar cells as they convert sunlight to power. Solar cells convert light energy into electrical energy. With a few simple tools on a sunny day (or working indoors under a ...
The energy released in an earthquake ranges over many orders of magnitude. Earthquakes are measured on a magnitude scale that is exponential: Each additional unit multiplies the energy released by 32.
You’ll feel the pressure to do some heavy lifting. When you push the plunger on a syringe, water is forced into a second syringe, extending its plunger and lifting a mechanical arm. The process ...
You may not be able to put a square peg in a round hole—but you can make a square wheel roll on a round road. Square wheels roll smoothly on a surface with bumps of the right size and shape. Using hot ...
Get Bach to the fundamentals. You can amplify a tuning fork by holding it over a pipe and changing the length of the pipe. At certain pipe lengths, the pitch made by the tuning fork sounds very loud ...