Featured Article: How Solar Cells Work
Solar cells use sunlight to produce electricity. But what happens on a cloudy day? Learn all about solar cells and what it would take to power your entire house with solar energy. See more »
energy production library
The greatest need modern civilizations have is energy. Learn about oil, electricity and newer forms of energy like solar and wind power.
What is activated charcoal and why is it used in filters?
Charcoal is carbon. Activated charcoal is charcoal that has been treated with oxygen to open up millions of tiny pores between the carbon atoms. What does this have to do with its absorbancy?
See more »What is an oscilloscope used to measure?
An oscilloscope measures the voltage and frequency of an electric signal. A machine uses "sweeps" and and an input signal. See how it all comes together.
See more »What is superconductivity?
The future of superconductivity research is to find materials that can become superconductors at room temperature. Once this happens, the whole world of electronics, power and transportation will be revolutionized. Why is superconductivity so revolutionary?
See more »Why does smoke come from a fire?
Let's say you have a nice fire going, and it's reduced down to a pit of hot "glowing embers." If you now toss a piece of wood, or even a sheet of paper, onto this fire, you see a huge puff of smoke as it heats up.
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