The terminal velocity of an object is the speed at which the force of drag equals the force of gravity on that object.

Paul Andersen explains how organisms are able to regulate their internal body temperature (or not). He starts with a brief description conduction, convection, radiation and metabolism. He contrasts ectotherms and endotherms. He also...

In this video Paul Andersen details the characteristics of electromagnetic waves. Electromagnetic waves are transverse waves that can move through both mediums and vacuums. The electric and magnetic fields oscillate perpendicular to...

The welding process usually involves pretty extreme levels of heat. But it turns out that in the cold vacuum of space, metals can weld together... automatically.

So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini talks to us about perspective, observation, and how relativity is REALLY weird!

In this video Paul Andersen compares and contrasts mechanical and electromagnetic waves. Both types of waves transfer energy through oscillations but mechanical waves requires a medium. Several examples of each type of wave are included.

How to Improve Your Home's Indoor Air Quality

Howcast - See water freeze before your eyes with the magic of physics.

Howcast - Learn if soldering involves hazardous materials from expert Jeff Koskulics in this Howcast video.

Howcast - Learn how to remove solder from expert Jeff Koskulics in this Howcast video.

Howcast - An air mattress is great for guests or for bringing on camping trips. Get a good night's sleep and inflate your air mattress.

Howcast - Those brown and orange spots don't have to send you running to the flooring or department store anymore. Remove that iron oxide at home with these steps.

Howcast - It's spring cleaning time! Since the average American spends a third of their time in bed, use these tips to help you spring clean your mattress.

Howcast - Do it right the first time and you won't have to do it again -- until next spring, that is.

Howcast - Cooking splatters, food droplets, and even dirty shoes can leave oily stains on your garments and carpet. Remove them with common household products.

Howcast - Having pets in your home doesn't mean you can't make it marketable. Learn how to sell your house without having to send your furry or feathered friends away.

Howcast - Get rid of your flea infestation, and you, your family, and your pets will all breathe a little easier.

Howcast - This guide will help you get rid of spiders without harmful chemicals.

Howcast - Don't let a leaky sunroof rain on your parade. Diagnose the problem and fix it before it's too late.

Howcast -Bed bugs survive by feeding on the blood of humans and other animals. Prevent bed bugs from taking over your home and skin by following these steps.

You might never recapture that new car smell, but you can replicate a new car shine.

Leather seats are expensive. Keep them looking that way with a little cleaning and conditioning.

If even the bats are intimidated by the clutter in your attic, it's time to tackle the mess.

Moths can be destructive to stored clothing and food items. Here's how to get rid of them.