DIY Science Time is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and ...

If I were to set my chair on top of my desk, it would be dangerous, as well as inconvenient. If I were to sit in my chair while it was set on my desk, it would be inconvenient and even more dangerous.

Water wheels, racers, and wrecking balls. Mechanical energy is the combined potential and kinetic energy in an object that enables work to occur through the movement of another object. Learn how ...

The Work Energy Principle is one of the big ideas in introductory physics courses. It's so big that the textbook presentation can get a little confusing - but it doesn't have to be that way. I haven't ...

When rocks are taken uphill, they gain gravitational potential energy from whatever brought them up. When they fall down, this becomes kinetic energy, which is released as heat or used to break the ...

The Principle of Conservation of Energy states that energy can be changed from one form to another but the total amount of energy does not change. Energy is measured in joules (J) and 1 J is ...

Emerging from the depths of the ocean, turbines are becoming a powerful player in the renewable energy sector. They harness the power of tidal energy, a force of nature that has the potential to ...