A wave with both magnetic and electrical field components, which oscillate perpendicular to each other.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and...

Microwaves are not only used to heat food. Mobile phones utilise this type of electromagnetic radiation, allowing us to communicate over large distances. Physics - Waves - Learning Points. Mobile phones work by converting the sound into...

Telescopes have enabled us to truly see the wonders of the Universe. Who invented them and how have they developed throughout history? Physics - Universe - Learning Points. The first optical telescopes were made around 1608. Early...

We have sent messages around the world and into space, but communicating underwater remains a challenge. How and why do radio waves allow us to talk to submarines? Physics - Waves - Learning Points. Salt water absorbs sound waves making...

What scientists believed was a technical fault with their equipment turned out to be radiation left over from the Big Bang - one of the greatest astronomical discoveries of the 20th century. Physics - Universe - Learning Points....

The range of electromagnetic radiation in the electromagnetic spectrum is huge. Where does this radiation come from and how do the frequencies and wavelengths vary? Physics - Waves - Learning Points. Electromagnetic radiation is all...

From radio waves to gamma rays, the electromagnetic spectrum is useful in different ways. How does this radiation differ and how can they be used? Physics - Waves - Learning Points. Electromagnetic radiation exists along a continuous...

MRI machines are now commonly used in hospitals to build amazing images of inside our bodies. Discover how magnets allow them to do this. Physics - Electricity And Circuits - Learning Points. MRI machines use magnets to take images of...

What are the properties of magnets, and why are they useful to us? Physics - Electricity And Circuits - Learning Points. A permanent magnet is a piece of metal that possesses a magnetic field. The magnetic field is strongest at the...

The bending or spreading of waves when they encounter an obstacle. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...

The lowest frequency range of electromagnetic radiation, with wavelengths from millimetres to many kilometres. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Electromagnetic radiation with a wavelength between a few millimetres to about a metre, in between radio waves and infrared. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...

Explore the fascinating evolution of transatlantic communications in this detailed video. We trace the journey from the early days of transoceanic messages carried by ships to the groundbreaking laying of the first telegraph cable across...

Ride into 'Waves' to discover the powerful forces that shape our oceans, sounds, and even light! It's a splashing journey into the science of waves, made simple and fun for kids.

Learn about the different types of waves, including transverse and longitudinal waves. Understand how these waves move through different mediums and their properties. Discover the speed of sound and how it varies depending on the...

Dive into the fascinating history of portable music players and the technological advances in remote controls. From the revolutionary Walkman of the late 1970s to the intricacies of cassette mechanics and the progression from infrared...

Dr. Forrester explains how radar and sonar works.

Carrier pigeons have an innate ability known as magnetoreception, which enables them to detect and orient themselves based on magnetic fields. Humans lack this ability, but many bird species have the skill to varying degrees. Rock...

Simply switching off your phone data won’t completely eliminate radio wave emissions, even when your phone is on standby mode. This is because the phone needs to be connected to a nearby cell tower to be online and available for calls...

Amplitude Modulation, commonly abbreviated as AM, is a common method of broadcasting radio signals. This method dates back to the 1870s, i.e., the time when we first discovered that information in the form of audio production can be...

If only we were all given a window so a doctor could look inside us when we were ill.Think of the operations that would save! Luckily there are now many ways we can see what is happening deep inside our bodies by using electromagnetic...

Dive into the story of Robert Wilson and Arno Penzias, who stumbled upon cosmic microwave background radiation, proving the Big Bang theory.

This video explores the growing movement of community wireless networks in East London. Led by individuals like Adam Burns and organizations like Ambient TV, these networks provide an alternative, non-commercial option to traditional...

In this video we cover the following:

- The 7 different types, and order, of the waves in the electromagnetic spe
ctrum
- The phrase ROYGBIV to help you remember the order of colours in the visible ligh
t spectrum
- The...