In this video Paul Andersen explains how the electric field strength is directly related to the amount of charge that generates the field.

There is an invisible shell of radiation surrounding our planet that can wipe out satellites and could endanger future explorers. One possible solution to this problem? Good, old-fashioned radio waves.

In this video Paul Andersen explains how resistors and capacitors affect circuits. The resistance of a resistor is affected by the resistivity of the material and the geometry of the resistor. The current through a resistor can be...

How DO you make a digital clock?

This tutorial shows you how to use a solderless breadboard to build an electronic circuit, including the basics of how a breadboard works and some common mistakes that beginners make.

From land to sea to space, scientists are using incredible tools to make new discoveries. These are the ten largest instruments in use around the world.

A data-driven look at how scientists view some of the most important issues facing humanity compared to the general U.S. public, according to surveys conducted by the Pew Research Center.

Extreme isolation is something our greatest explorers have faced in varying degrees. Now, a team of six NASA recruits have begun a year-long mission on the desolate side of a barren Hawaiian volcano that will simultaneously test the...

Howcast - Learn how to use a 25-foot Bay Flats Boat by Sea Chaser from Captain Layne Wagner in this saltwater fishing video from Howcast.

Howcast - Learn the parts of a bass guitar from musician John Sutton in this online guitar lesson from Howcast.

Howcast - Learn the difference between soldering, brazing, and welding from expert Jeff Koskulics in this Howcast video.

Howcast - Learn what flux is in soldering from expert Jeff Koskulics in this Howcast video.

Howcast - Learn what solder is from expert Jeff Koskulics in this Howcast video.

Howcast - Learn what soldering is from expert Jeff Koskulics in this Howcast video.

Howcast - Therapists define a sexless marriage as one in which intercourse happens less than 10 times per year. Here are some ways to nudge that number upward.

Howcast - Your carbon footprint is how many greenhouse gases you release in your daily activities. Be remembered by your good deeds, not your carbon emissions.

Have a computer too old to sell? A hopelessly dated phone? Don't just toss them into the garbage, where they will leach toxic materials into the soil and water. Recycle them.

The battery includes components made of materials found in nuts and capers and a water-based electrolyte, and the conductivity is boosted by activated charcoal. The team intends for their tech to be used in medical devices and eventually...

In an open-loop configuration, the Gain of the Op-Amp is very large. Learn how we can use this to design a Comparator! Op-Amp Circuit Design. Comparator Concepts. Electronics 101. Electronics Circuit Design.

Thevenin's Equivalent Circuit allows you to convert any complex circuit into a simple circuit that has a single voltage source (Thevenin's Voltage) and a single Resistance (Thevenin's Resistance), in series with the Load. After that, you...

This video provides a brief overview of the history and function of electricity, debunking the misconception that Benjamin Franklin invented it. It explains how electricity has always existed in nature and how figures like Franklin and...

This easy video tutorial will show you how to use an Arduino.

This easy video tutorial will show you how to use an Arduino.

This easy video tutorial will show you how to use an Arduino.