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Exploring Saturn and its Moons: Discoveries from the Cassini Mission
This video highlights the incredible discoveries made by the Cassini spacecraft during its mission at Saturn. From capturing exquisite views of the ringed planet and its moons to uncovering new radiation belts and studying the internal...
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Revolutionizing Advertising: Hypertag Technology Takes Marketing to the Next Level
This video discusses the use of new technology called Hypertag, which allows advertisers to deliver promotional material directly to mobile phones. By using infrared or Bluetooth capabilities, shoppers can receive electronic discount...
Curated Video
Radiation
Though often used more narrowly to refer to ionising radiation, the term radiation refers to any form of energy that travels through a medium, radiating outwards from a source. A Twig Science Glossary Film. Key scientific terms defined...
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Infrared light
Electromagnetic radiation with a slightly longer wavelength than visible light, between about 700 and 1050 nanometres. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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Transparent
Capable of transmitting light, or more generally something that allows radiation to pass through relatively unhindered. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise...
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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...
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Thermal Imaging
Great lengths are taken by energy companies to keep our electricity supply on. To spot any potential power cuts, they use sophisticated equipment, and take to the skies. Physics - Electricity And Circuits - Learning Points. Networks of...
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Infrared: Snake Hunt
Humans are not able to see infrared radiation without specialised equipment, but certain snakes can detect infrared radiation. See how they use it to deadly advantage. Physics - Waves - Learning Points. The pit viper uses special sensors...
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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...
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Heat Absorption
We use two cans, one painted black and the other painted white, to investigate heat absorption. The containers are placed in front of a heat source and the temperature change is recorded. This shows that the black container absorbs heat...
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Heat Loss
We compare two cans, one painted black and the other painted white, to see how quickly they lose heat. The containers are placed in front of a heat source and heated to the same temperature. The temperature in each container is recorded...
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Splitting Light
We use a prism to split white light into its constituent colours. Light is passed through a slit in a screen before it hits the prism. The prism refracts the light and we can see the different colours. A second slit can be used to see...
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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...
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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...
Curated Video
White light – Clip
There are many types of light we cannot see ... find out how special cameras can detect infrared light. Physical processes - Light - White light Learning Points White light is made up from many different colours. Infrared cameras reveals...
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Big Ideas - Episode 7 - Thermal Imaging
The need to see in the dark; to observe weather patterns from outer space; or to conduct security surveillance at night, lead to the Big Idea of Night Vision, and Thermal Imaging. FLIR, or Forward Looking Infra Red, is a continuation of...
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The Spitzer Space Telescope
The Spitzer Space Telescope is one of NASA s four orbiting telescopes each observing in differing areas of the spectrum. Spitzer detects images in the infrared region, which shows activity not evident in the visible wavelengths.
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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...
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CompTIA A+ Certification Core 1 (220-1101) - Mobile Connections
Mobile devices connect to other devices via wired or wireless. Wired connections are used for power and data transfer. Wireless options include NFC, Bluetooth, infrared, or 80 2.11 (Wi-Fi). These connections are used for a variety of...
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Medical Imaging
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...
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From Past to Present: The Evolution of Electric Vehicles
This video discusses the introduction of electric cars and the challenges faced in enforcing traffic rules, particularly regarding carpool lanes. It highlights a new infrared system that can accurately identify single occupant vehicles...
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GCSE Physics - Electromagnetic Waves #64
In this video we cover the following: - The 7 different types, and order, of the waves in the electromagnetic spectrum - The phrase ROYGBIV to help you remember the order of colours in the visible light spectrum - The inverse...
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GCSE Physics - Microwaves and Infrared #66
This video covers: - How microwaves are used to heat food - How microwaves are used in satellite communication - The idea that hotter objects emit more infrared radiation - How we use infrared radiation to cook things General info: -...
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How Optocouplers work - opto-isolator solid state relays phototransistor
Optocoupler. In this video we learn how optocouplers work and also look at some simple electron circuits you can make yourself to understand how an optocoupler, opto-isolator, phototransistor, photocoupler works. Photo transistor...