Curated Video
Nuclear Fission: The Power and Dangers of Splitting Atoms
Find out what happens when an atom splits and why, depending on how this process is controlled, the consequences can be productive or destructive. Physics - Energy And Radioactivity - Learning Points. Nuclear fission creates energy by...
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Moore's Law
Computing technology has developed at a phenomenal rate in recent decades – what would once fill an entire room can now be held in the palm of your hand. So how was Moore's Law able to predict this over 50 years ago? Physics -...
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What Does the Internet Weigh?
What is the combined weight of all of the information on the internet? Mathematicians must work with the smallest particles of the Web to find out. Maths - Number A Twig Math Film. Reinforce and extend the learning required by the...
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Making an Electromagnet
We create a simple electromagnet by coiling wire around a nail and passing current through it. The magnetic field around the electromagnet creates similar patterns in iron fillings to a permanent magnet. Physics - Electricity And...
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Ion Migration
We separate the ions in copper dichromate gel using electrolysis. We see the positive blue copper ions move to the negative electrode and the negative yellow chromate ions move to the positive electrode. Chemistry - Reactions - Learning...
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The Biggest Number Ever
What is the biggest number ever used? Graham's number, discovered in the 1970s by mathematician Ron Graham, is so big as to be unfathomable. No one even knows what the first digit is – and a special form of notation is needed to describe...
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The Egyptians and Multiplication
Discover the simple method of Egyptian multiplication that can be used to work out the product of any number, no matter how large, using only powers of two. Maths - History Of Maths A Twig Math Film. Reinforce and extend the learning...
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Diophantine Equations: Fermat
This amateur mathematician proposed an exciting theorem that stood unproved for over three centuries. He claimed he had the proof – but no room to write it in the margin of his book. Maths - History Of Maths A Twig Math Film. Reinforce...
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The Halogens
Halogens are hazardous to human life, yet they can also be very useful. How do they react when they meet other elements? Chemistry - Periodic Table - Learning Points. The halogens are the elements in Group 7 of the periodic table. The...
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Land Formations
Learn how our planet's landscapes, from mountains to hills, plateaus to plains, have been sculpted over millions of years by powerful geological forces. Earth Science - Geology - Learning Points. The planet's diverse landscape is shaped...
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Heptathlon
Heptathlon scoring involves converting distance, time or height measurements into a universal points system. The result? A complex scoring system that relies on algebra. Maths - Algebra A Twig Math Film. Reinforce and extend the learning...
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Geothermal Power
The heat at the centre of our planet could fulfil all of our energy needs. Find out how some are already utilising geothermal power. Earth Science - Earth's Resources - Learning Points. Geothermal power is obtained from heat within the...
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The Dark Side of Oxygen
We depend on oxygen for life. But in fact, oxygen is corrosive: ageing us, damaging cell DNA, and 'rusting' us from the inside. Biology - Human Body - Learning Points. Oxygen is vital in powering every cell and process in the human body....
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Can We Control Pain?
Watch the extraordinary outcome of a laboratory experiment in which participants are given electric shocks. How does anticipation of pain or the use of placebos affect the pain the participants feel? Biology - Being Human - Learning...
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An Ancient Olympian
What the discovery of a skeleton over 2,000 years old tells us about the training techniques of ancient olympians. Biology - Human Body - Learning Points. In 1959 the tomb of an ancient Olympian was discovered in Taranto, southern Italy....
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Intuition
What is intuition and how does it work? A fireman explains how intuition saved his and his crews' lives. Biology - Being Human - Learning Points. The human brain has powers we aren't normally aware of. There is a part of our brain that...
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The Emperor's Chess Board
The legend of the inventor who asked to be granted grains of rice for each square of a chess board, exponentially. And why his wish could not be fulfilled... Maths - Number A Twig Math Film. Reinforce and extend the learning required by...
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The Wind Power Debate
Despite being a clean, renewable source of energy, wind farms attract dissent. Discover the downside to the construction of wind farms and why some people are upset about their use. Earth Science - Earth's Resources - Learning Points....
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Santorini: Looking for Atlantis
Could Atlantis, the mythical city which sank beneath the sea, be based in historical fact? The story of how a volcanic eruption on Crete may have inspired this enduring myth. Earth Science - Geology - Learning Points. In 1630BC, the...
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How Do Generators Work?
Discover how simple magnets and wires can be used to create electricity - and how this principle is now used in national power supplies. Physics - Electricity And Circuits - Learning Points. In 1835 the scientist Michael Faraday made an...
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Anode
An anode is the terminal from which electrons leave a system. 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...
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Electrical resistance
Opposition to the flow of a current within a circuit, measured in ohms. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
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Wind Turbines - Wind Energy
Find out how wind turbines transform kinetic energy into electricity. People and places - Future of energy - The energy debate Learning Points Wind power is a renewable energy source. A Twig Context Film. Reinforce and extend the...
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What is Electricity? - Power Basics
Explore in simple terms what electricity is, how it is created and how it travels to our homes. Physical processes - Electricity and magnetism - Electricity Learning Points Electricity is a form of energy. Electricity is the flow of...