What causes different kinds of weather? What is wind and where does it come from? How can pressure systems help us predict the weather? Earth Science - Weather - Learning Points. Understanding weather systems is the key to reliable...

The weather systems on our planet are all driven by one thing: air. Discover how our weather is driven by energy from the Sun, affecting the movement of air. Earth Science - Weather - Learning Points. Our weather is a chaotic and complex...

Discover the damage caused by shockwaves and how they are created by supersonic speeds. Physics - Waves - Learning Points. Waves of high pressure are produced when something moves through a medium at supersonic speed. At supersonic...

Around the world monsoons bring huge volumes of seasonal rain to certain regions. The best known is the Asian monsoon, but why does it happen? Earth Science - Weather - Learning Points. Monsoons are heavy rainfalls concentrated over the...

We create a Rubens\u2019 Tube to demonstrate the movement of sound waves. A tube lined with holes is filled with propane and connected to a speaker. We light the gas coming from the holes and play different frequencies and volumes of...

We release carbon dioxide from a fire extinguisher against a dark cloth to see what happens. The expanding gas cools as it leaves the extinguisher, forming a visible dry ice solid on the cloth. As it warms, the carbon dioxide vanishes...

What is wind and what are localised winds? Find out about the global cycles which take winds right across the world. Earth Science - Weather - Learning Points. Wind begins with the difference in air pressure. Air moves from areas of high...

The central, usually hottest and densest, part of a larger structure, for example a star, planet or galaxy. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual...

Understand how meteorologists can predict the weather.
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Physical processes -The Earth and beyond - Wat
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Learning Points
Meteorologists try to


predict, or forecast the...

Learn all about the Earth's water cycle.
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Learning Points
Water constantly recycles itself throug
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a process called...

Wind can be a powerful force, but what exactly is wind?
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Material processes - Solids, liquids and gases - Characte
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Learning Points
Wind is air moving from an area of high...

Delve into the principles of flight dynamics, focusing on the relationship between air pressure and lift. Discover how Bernoulli's principle influences the design of airplane wings, creating the necessary conditions for lift to occur....

The curved shape of an aircraft wing, known as a winglet, helps to reduce the amount of drag created by the wingtip vortices. Since the 1980s, winglets have been a major part of future aircraft designs. For some old aircraft, winglets...

How do scroll compressors work? What are the main parts, the different types and controls.<br/>

This video answers:

- Why is the Haber process so impor
tant?
- What is the chemical equation for the Habe
r process?
- What are the conditions for the Haber process, and why do we use th
ose conditions?
- How...

Turbocor chiller, learn how turbocor chillers work, the main components and centralised cooling systems. Dual impeller, variable frequency drive, VFD, IGBT, electronic expansion valve EEV, liquid level sensor, air handling unit AHU, fan...

In this video we take a look at the technical data of how heat pumps work. Covering the basics, showing the typical system along with the main components and an animated drawing explaining its operation in both cooling and heating mode...

How does an electronic expansion valve work EEV EXV. In this video we're going to cover the basic working principles for how an electronic expansion valve works in a refrigeration system. Learn HVAC enineering with animations and 3d...

This video guides you through the advanced operation of a chiller, making use of animations, illustrations and 3D models to help build your understanding.

This covers the basics of a centrifugal chiller in a typical office...

This video guides you through the basic operation of a chiller, making use of animations, illustrations, 3D models and real world photographs to help build your HVAC understanding.

This covers the basics of a air cooled chiller in...

In this video we take a look at how heat pumps work. Covering the basics, showing the typical system along with the main components and an animated drawing explaining its operation in both cooling and heating mode as well as how the...

Electronic expansion valve. In this video we'll be covering EEV electronic expansion valve to learn how they work and where they are used. We learn basic refrigeration cycle, compressor, condenser, evaporator and different types of...

This video guides you through the basic operation of a chiller, making use of animations, illustrations, 3D models and real world photographs to help build your HVAC understanding.

This covers the basics of a air cooled chiller in a...

The circulatory system is a vast, complex network of blood vessels that serve as highways for transporting blood which contains life-sustaining molecules, such as nutrients, gasses, hormones and waste products, to the various organs of...