Bozeman Science
Electromagnetic Radiation
In this video Paul Andersen details the waves in electromagnetic radiation. There is an inverse relation between the wavelength and frequency of electromagnetic waves. Electromagnetic radiation includes gamma rays, x-rays, infrared...
SciShow
"Alternative" Alternative Energies
Humans have an almost insatiable energy demand, so scientists and engineers are always on the lookout for sustainable ways to provide the energy we need. And some of these ideas go way beyond solar panels and wind turbines! Chapters View...
Bozeman Science
Mechanical and Electromagnetic Waves
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.
TED-Ed
TED-Ed: Light waves, visible and invisible - Lucianne Walkowicz
Each kind of light has a unique wavelength, but human eyes can only perceive a tiny slice of the full spectrum -- the very narrow range from red to violet. Microwaves, radio waves, x-rays and more are hiding, invisible, just beyond our...
Science ABC
AM vs FM Radio: Which Modulation Rocks Your Ears?
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...
Curated Video
Transmitter
An electronic device that produces radio waves with an antenna, usually for communication or measurement purposes. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...
Curated Video
Reflection
The change in direction of a waveform at the boundary between two different media, so the wave returns to the medium in which it started. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images...
Curated Video
Electromagnetic radiation
A wave with both magnetic and electrical field components, which oscillate perpendicular to each other. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions....
Curated Video
How Do Mobile Phones Work?
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...
Curated Video
Telescopes
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...
Curated Video
Submarine Communication
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...
Curated Video
Nobel Prize By Chance
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....
Curated Video
The Electromagnetic Spectrum
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...
Curated Video
What Makes Up the Electromagnetic Spectrum?
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...
Curated Video
MRI
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...
Curated Video
What Are Magnets?
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...
Curated Video
Diffraction
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...
Curated Video
Radio waves
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...
Curated Video
Microwave
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...
Bedtime History
Transatlantic Communications for Kids | Bedtime History
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...
Wonderscape
Exploring Types of Waves: Transverse and Longitudinal
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 medium....
Curated Video
The Evolution of Portable Music and Remote Control Technology
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 to...
Curated Video
How Do Carrier Pigeons Know Where to Go?
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...