This is what happens when you go to school for broadcasting, but end up in IT - you miss the basics. I know how to splice reel-to-real tape, but figuring out how much power I need in my server closet ...

Oscilloscopes measure current and voltage and, through the magic of mathematics, calculate power. Unfortunately, power comes in a large number of guises: instantaneous, real, apparent, and reactive.

When you measure RF emissions with a spectrum analyzer, you may need to measure the total power contained in a spread-spectrum signal. FCC part 15, subpart E (Ref. 1) requires these power measurements ...

As the days get longer and the sun shines brighter, it's the perfect season to think about harnessing that energy for your home. Amid the environmental concerns, electricity costs are climbing and ...

We know there are a lot of diesel junkies out there who are into math and physics, so we decided to put a few basic calculations in one place so everybody out there in reader land could have them ...

If you are building your own PC, you might be interested in how much power your PC uses. Whether you're playing games, or it is sitting idle, it's a good idea to know when the PC costs the most to run ...