Exploratorium
Exploratorium: Science Snacks: Physics/electricity & Magnetism
Exploratorium Science Snacks are miniature science exhibits and experiments that can be made with common, inexpensive, easily available materials. These electricity snacks represent a set of devices that you can build and experiment with...
Science Buddies
Science Buddies: Rock On! Recording Digital Data With Magnets
This is a straightforward project that shows you how data can be digitized and stored on magnetic recording media. You'll learn how alpha-numeric characters are digitized, and you'll use bar magnets to represent the individual data...
Learn Engineering
Learn Engineering: Understanding Rotating Magnetic Field & Synchronous Speed
Get information about rotating magnetic fields and how electric machines use them for their operation. Discusses synchronous speed and number of poles on an electrical machine. The accompanying article discusses the topics found in the...
Science Buddies
Science Buddies: Solar Cell Power Output vs. Temperature
Solar cells provide a clean way of making electricity directly from sunlight. In this project you will build a simple circuit and experimental setup to investigate whether the power output of a solar cell changes with ambient temperature.
Science Buddies
Science Buddies: Shaking Up Some Energy
Shake N' Light flashlights have been advertised on televisions across the nation in the recent year. But many do not understand just how they get energy to light up the bulb without using batteries. Do this experiment to make your own...