Physical Science


New! Shedding Light on Heat: Episode 1—Temperature 16 min.

In this program on temperature, 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 demonstrate how scientists measure the amount of heat energy that water absorbs when it’s heated.

Formats: DVDStreaming Copyright Date: 2019

New! Shedding Light on Heat: Episode 2—Changes of State 20 min.

In this program, we look at the differences between solids, liquids, and gases, and at 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 rules that that most other substances do!

Formats: DVDStreaming Copyright Date: 2019

New! Shedding Light on Heat: Episode 3—Thermal Expansion 21 min.

In this program, we look at the fact that substances expand when they get hot and contract when they get cold and we explain why they do. We look at how thermal expansion can be a real nuisance, but also how we can put thermal expansion to good use for the good of the world!

Formats: DVDStreaming Copyright Date: 2019

New! Shedding Light on Heat: Episode 4—The Kelvin Scale 24 min.

In this program, we look at the temperature scale that in many ways is superior to the Celsius and Fahrenheit scales. Zero on the Kelvin scale is equal to -273°C. And why is -273°C so special? Because that’s the coldest temperature you can get!

Formats: DVDStreaming Copyright Date: 2019

New! Shedding Light on Heat: Episode 5—Heat Transfer 33 min.

In this program, 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 heated. Understanding heat transfer is essential if you want to cook good food and if you want to stay warm when it’s cold and stay cool when it’s hot.

Formats: DVDStreaming Copyright Date: 2019

New! Engineering Solar Radiation Is a Crazy Idea: A Debate 93 min.

Geoengineering is an ambitious set of methods proposed by scientists to help mitigate the effects of climate change. And one type in particular—solar geoengineering—has been the subject of growing debate. Solar geoengineering involves several techniques, including injecting reflective particles into the stratosphere to reduce the amount of solar radiation and heat that reaches the Earth. This proc...

Formats: DVDStreaming Copyright Date: 2019

Don't Bring Extinct Creatures Back to Life: A Debate 95 min.

De-extinction describes the process of creating an organism that belongs to or closely resembles an extinct species. While this process was once a science-fiction fantasy explored in films like Jurassic Park, recent biological and technological breakthroughs suggest that reviving extinct creatures, like the passenger pigeon and the woolly mammoth, could soon become a reality. The benefits of de-ex...

Formats: DVDStreaming Copyright Date: 2019

Pluto and Beyond 53 min.

Since it explored Pluto in 2015, the New Horizons spacecraft has been zooming toward NASA’s most distant target yet. Join the mission team as the probe attempts to fly by Ultima Thule, an object 4 billion miles from Earth.

Formats: Streaming Copyright Date: 2019

Apollo’s Daring Mission 53 min.

Apollo astronauts and engineers tell the inside story of how the first mission to the moon, Apollo 8, pioneered groundbreaking technologies that would pave the way to land a man on the moon and win the space race.

Formats: Streaming Copyright Date: 2018

Searching for Life: On the Trail of Exoplanets 54 min.

2021 will bring with it the launch of the James Webb Space Telescope, successor to the famed Hubble Space Telescope. With greatly improved resolution and sensitivity, this telescope is set to revolutionize astronomy and cosmology. This program focuses on how this incredible new telescope will aid astrophysicists, geologists, engineers, and astrobiologists in their quest to find life beyond earth.

Formats: DVDStreaming Copyright Date: 2018