Secondary Catalogue

Series: Shedding Light on Heat


Changes of State

Changes of State

In 'Changes of State', we look at the differences between solids, liquids, and gases, as well as why things change state when they absorb or lose heat energy. We also look at the strange example of carbon dioxide, which doesn't follow the same...Show More
Heat and the Human Body

Heat and the Human Body

In the final episode, 'Heat and the Human Body', we look at the brilliant systems within our bodies that allow us to maintain a more-or-less constant body temperature regardless of the weather conditions. Sweating, shivering, pumping more blood...Show More
Heat Transfer

Heat Transfer

In the fifth episode, we look at the three ways that heat energy can transfer from one thing to another: conduction, convection, and radiation. A heat source is useless if heat energy can't transfer from the heat source to whatever you want...Show More
Temperature

Temperature

In the first episode we get down to the atomic level to explain how hot things are different to cold things, we describe what a temperature scale actually tells us, and we demonstrate how scientists measure the amount of heat energy that water...Show More
The Kelvin Scale

The Kelvin Scale

In episode four, 'The Kelvin Scale', we look at the temperature scale that is superior to the Celsius and Fahrenheit scales in many ways. Zero on the Kelvin scale is equal to -273°C. And why is -273°C so special? Because that's the coldest...Show More
Thermal Expansion

Thermal Expansion

In episode three, we look at thermal expansion—the way that substances expand when heated and contract when cooled—and we explain why it happens. We look at how thermal expansion can be a real nuisance, but also how we can put thermal...Show More