Science ABC
Boltzmann Brain Paradox Explained in Simple Words
A Boltzmann brain is not real, but what’s fascinating about it is that it thinks it’s real, and all the memories and experiences it has are real. But, of course, this brain is not real. But how would such a brain know that its...
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Absolute zero
The lowest temperature theoretically possible, at which particles would stop vibrating. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
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Perpetual Motion
A machine that can work under its own power forever would revolutionise our world. Could this ever be possible? Physics - Energy And Radioactivity - Learning Points. A perpetual motion machine is a theoretical machine that can run...
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Laws of Thermodynamics
Find out what these two principal laws explain about the way energy can and cannot be used throughout the entire Universe. Physics - Energy And Radioactivity - Learning Points. The 1st law of thermodynamics states that energy can neither...
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Red Hot: Emergency Stop
Revealed: the tremendous heat created and energy 'lost' when cars brake. Physics - Energy And Radioactivity - Learning Points. Car brakes convert kinetic energy into heat energy. When you press the car brake pad a system of levers and...
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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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Ball and Hoop
We use a metal ball and hoop to demonstrate heat expansion. When cool, the ball fits through the hoop, but there is little extra space. The ball is then heated over a Bunsen burner. When hot, the ball doesn't fit through the hoop. We see...
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Hero's Engine
We use a Hero's engine model to show how equal and opposite forces can cause propulsion. Two holes are pierced in a metal bottle and some water is added. This is suspended above a Bunsen burner, and as the water boils and leaves the...
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Energy Transformation
Discover how energy from the Sun is converted into different forms, and what happens to energy that is 'lost' from a system. Physics - Energy And Radioactivity - Learning Points. The Sun provides almost all the energy on Earth. Energy...
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Do Cars Really Explode After Collisions Like in Movies?
Contrary to popular belief (as set by movies), cars are not very prone to explosions, and even a car that is on fire is very unlikely to explode. The necessary conditions for an explosion to take place are not met after a car experiences...
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The pan you don't have (but should)
Carbon steel pans are some of the most versatile pans in a home cook’s kitchen - here’s why.
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How to NOT overcook your food
It's possible to overcook your food AFTER you take if off the heat - but science can help you avoid it.
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Solar and Thermal Energy
Dr. Forrester talks about thermal energy. She defines thermodynamics and talks about conduction, convection, and radiation. She also defines photovoltaic energy. She talks about solar power and then shows how to make a solar oven.
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Variable Air Volume - VAV system HVAC
In this video we look iat variable air volume systems (VAV) to learn how it works and how the system operates . We use 3D models, animations and real life photos to help you understand and learn HVAC engineering.
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Thermal Comfort in Buildings Explained - HVACR Design
Learn the different factors which affect our thermal comfort in buildings and how we control these conditions using HVACR. We also look at how to optimise the design and efficiency of our built environment using CFD simulations. FREE...
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Plate Heat Exchanger, How it works - working principle hvac industrial engineering phx heat transfer
In this video we learn how a plate heat exchanger works, covering the basics and working principles of operation. We look at 3d models, animations and real world examples.
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How a Chiller, Cooling Tower and Air Handling Unit work together
This video guides you with a 3D model of a typical HVAC system of an office building to help you understand how a building is cooled down and what is does with the heat. We include photographs of how the items look in real life and give...
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Centrifugal Compressors - Chillers HVAC
In this video we take a detailed look at how the Centrifugal compressor works on a chiller and why it's important. We use 3D models, real world photos and worked examples to help you understand how they operate.
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Laptop Heat Pipes Explained - how laptop cooling works
How do laptops stay cool? we look inside a laptop to learn how a laptop heat pipe works to control the thermal management of a laptop and remove the heat from the processor.
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How Multi ejectors work - working principle CO2 refrigeration
How Multi Ejectors work in C02 refrigeration system. In this video we'll be discussing how a multi ejector works in co2 transcritical refrigeration systems. We'll cover this topic using 3D models to help you learn HVAC.
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How Filter Driers Work - HVACR
Filter driers. In this video we look at filter driers in hvac refrigeration systems. This covers filter driers in air conditioning systems, heat pumps, when to replace filter driers, the main parts of a filter drier, how a filter drier...
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How Chiller works - Design Data
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 building. By...
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How Air Cooled Chiller Works - Advanced
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...