The buzzing sound that power lines produce is caused by corona discharge. Corona discharge is an electrical discharge that occurs when a fluid (like air) surrounding an electrically-charged conductor becomes ionized. In simple terms, its...

Why do we dance? We dance to music because of neural connections in our brain. These connections link the part that perceives music, the auditory cortex to the regions that help us move, the motor regions. We might have started creating...

I bet many of you think that the ideal gas law must prohibit passing gas on the elevator. That's a very good guideline, but there are other important laws we must know! Let Professor Dave run you through the details.

This episode goes over the domains of the CompTIA Security+ (SY0-601) exam objectives and the various topics that are covered.
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This clip is from the chapter "Risk Management" of the series "CompTIA Security+ Certification...

Get the full lesson plan for this activity <a href='http://learn.code.org' target='_blank' rel='nofollow'>at</a> href='http://learn.code.org' target='_blank' rel='nofollow'>at

Gases are everywhere, and this is good news and bad news for chemists. The good news: when they are behaving themselves, it's extremely easy to describe their behavior theoretically, experimentally and mathematically. The bad news is...

Find the full course <a href='http://learn.code.org' target='_blank' rel='nofollow'>at</a> href='http://learn.code.org' target='_blank' rel='nofollow'>at

Howcast - Learn how to stop on a skateboard from competitive skateboarder Nate Cohen in this Howcast skateboarding video.

This video provides an overview of the entire course.
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This clip is from the chapter "Introduction to C++ and Qt" of the series "C++ Programming By Example".In this section, we introduce C++ and Qt and get the development...