Panoramic visuals and engaging interviews position 400 Years of the Telescope as the must see documentary of the International Year of Astronomy in 2009. Beautifully photographed in 4K digital cinematography, this film is a visually stunning chronicle of the history of the telescope from the time of Galileo, its profound impact upon the science of astronomy, and how both shape the way we view ourselves in the midst of an infinite universe. The Interstellar Studios productions team travelled across five continents to interview leading astrophysicists and cosmologists from the world's renowned universities and observatories, who explain concepts ranging from Galileo's act of revealing the cosmos with a simple telescope, to the latest discoveries in space, including startling new ideas about life on other planets and dark energy - a mysterious vacuum energy that is accelerating the expansion of the universe. Show Less
This programme examines air pressure, and the ways in which it can be changed depending on wind speed and temperature. Students will learn about how air pressure increases or decreases depending on wind speed, and the way air expands when heated.
Everything moves. Even things that appear to be stationary are moving. Displacement, velocity and acceleration assist us in describing this movement by telling us the direction in which an object is travelling, how far it goes, how fast it travels and whether it slows down or speeds up. These basic ideas form the basis of many mechanics courses. This programme will cover all you need to know to have a thorough grounding in these fundamental concepts. Show Less
Calculating scalar and vector quantities is vital to understanding collisions. Using tennis court action, this clip examines various quantities including initial and final velocity, displacement, acceleration and time. A number of clearly worked examples using a range of mathematical formulae are provided, which will assist senior level physics students to understand the relationship between various scalar and vector quantities. Show Less
We open the door to the world of architecture. Learn the secrets of Stonehenge and see how construction cranes really work.
This video explains what artificial satellites are and what they are used for. The video provides a very brief history of artificial satellites, and covers some of the key terms related to artificial satellites. The video also covers the uses of satellites, from the International Space Station, communication and meteorological observations. Show Less
Visible light, which can be seen with our eyes, comprises a small sliver of the electromagnetic spectrum. The rest of the spectrum, from short wavelength gamma rays to long-wavelength radio waves, requires special instruments to detect. ALMA uses an array of radio telescopes to detect and study radio waves from space. Radio telescopes are typically large parabolic dish antennas used singly or in an array. Radio observatories are preferentially located far from major centres of population to avoid electromagnetic interference (EMI) from radio, TV, radar, and other EMI emitting devices. This is similar to the locating of optical telescopes to avoid light pollution, with the difference being that radio observatories are often placed in valleys to further shield them from EMI as opposed to clear air mountain tops for optical observatories. ALMA is an advanced tool for studying very old stars and galaxies. These objects now are seen at great cosmic distances, with most of their light stretched out to millimetre and sub-millimetre wavelengths by the expansion of the universe. ALMA provides the unprecedented ability to study the processes of star and planet formation. Unimpeded by the dust that obscures visible-light observations, ALMA will be able to reveal the details of young, still-forming stars, and is expected to show young planets still in the process of developing. In addition, ALMA will allow scientists to learn in detail about the complex chemistry of the giant clouds of gas and dust that spawn stars and planetary systems. Show Less
Bill Nye's the center of attention when he talks about the center of gravity and its effect on balance.
It's race time, and which will roll down a hill faster - an empty barrel, or a barrel filled with a hockey player? Explore the science of rotating objects - the concept known as 'moment of inertia'.
Build a simple motor and learn how the interplay between a magnet and an electrical current makes the motor spin.
A plastic dish, a coil of wire and a magnet are the main components required to make a functioning speaker!
Are people really capable of bending spoons with their minds? Will Yanick be able to work out the physics behind metal fatigue before he breaks every spoon in the Physics House kitchen?
As the world increasingly focuses on alternatives to the carbon-emitting fossil fuels that we have relied on for over a century, scientists are continually developing more efficient methods to collect the sun, as harnessing solar energy is becoming more and more viable. This programme is an excellent introduction to the principles behind solar energy collection and its various usages such as generating electricity, and for heating space and water. It covers what is solar energy; thermal and electrical uses of solar energy; and catches a glimpse of what the future might look like with current developments that are paving the way for a solar future. The programme provides an ideal background for students to research and examine further cutting edge case studies that demonstrate how powerful the potential is for everyday use of solar energy in homes, commerce and industry, and in vehicles. Show Less
This programme presents both the theory of electric circuits and basic practical methods of managing circuits safely. The benefits and dangers of ground circuits are illustrated, together with safety devices such as fuses and ground fault interrupters. The concept of electric resistance is introduced. Specific modules include Completing a Circuit, Fuses, Circuit Breakers, Ground Circuits, Ground Faults, Ground Fault Interrupters, Resistance, and Electrical Resistance. Show Less
This classic is one of our most popular and enduring programs. It shows a collection of the world's most spectacular and beautiful collisions analysed in terms of energy, force, momentum and vectors. We feature collisions between cars, trucks, planes, meteorites and people. These can be frozen on screen for analysis. Show Less
More than just high-speed space chunks, comets and meteors carry important information about the history of our Universe. A comet or meteoroid has hit every planet and moon we've discovered--in fact, the Earth's impact with comets and meteors may have created the oceans, caused the extinction of the dinosaurs, or brought life to Earth! Show Less
This video introduces students to conduction. Conduction is the process by which heat energy is transmitted through collisions between neighbouring molecules without the molecules moving from a hot region to a cold region.
This video introduces students to convection. Convection is the process by which heat is transferred by the movement of the heated molecules from a hot region to a cold region. It also looks at the applications of convection, such as in heating, and how convection has a direct effect on weather. Show Less
This programme looks at the origins of electricity through the first uses of static electricity by the Greeks, Gilbert and onto other popular displays by scientists in the 18th and 19th centuries.
Using 3D animation, 'DC Motors' explains the link between electricity and magnetism and how the two can combine to produce movement, the principles of the electric motor, and how useful motion can be achieved
We take a look at all things eco-energy, from nuclear power to algae power.
The program introduces electric current and voltage and measures these in series and parallel circuits. An experiment to measure resistance is demonstrated and results are shown graphically. Resistance is introduced and calculated from the gradient of V–I graphs. Ohm’s Law is discussed and the V–I graph for a light bulb is plotted. Resistance is shown to depend on the type of metal, the length of a wire, the thickness of a wire and on the temperature, concluding with a demonstration of a superconductor. Animations of positive ions and free electrons explain the observed behaviour. Concepts discussed: Current, Voltage, and Circuits Ohm’s Law Factors Affecting Resistance Show Less
We use electrical circuits every day. In the home, the car, at work and school – they are a vital part of our lives. This program covers the basics of electrical circuits in detail. It looks at various components of a circut; voltage, current, resistance and Ohm’s Law; series and parallel circuits; and demonstrates a range of calculations for voltage, current, resistance, power and the use of Kirchoff’s Law. It also covers how to use a multimeter; resistors and resistance colour coding. Learners are provided with clear verbal and visual explanations of the movement of current through a circuit, how it flows and how electrical energy is used, and easy-to-follow examples of how Ohm’s and Kirchoff’s Laws are applied. The content is ideal for middle level science students, and essential viewing for entry level vocational learners in electrical and allied trades. Show Less