The eye and colour vision
The physics of the eye, its performance and colour vision: refraction and accommodation; photoreceptors and resolution; compromises in visual performance.
More details | Watch nowGeometrical optics
On scales much bigger than the wavelength, rays explain the behaviour of interfaces, mirrors, lenses, optical instruments, including telescopes and microscopes.
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White light comprises colours in the visible spectrum. The electromagnetic spectrum. Speed of light. Young's experiment and waves. Quanta and photons.
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Moving either source or receiver produces a frequency shift called the Doppler effect, which we measure and analyse.
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Bill reads from his book of fairy tales. He tells the story of the engineering of a light bulb, focusing on the materials breakthrough needed to make the filament.
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Bill cuts a fluorescent light out of his ceiling to show that plasmas and their products are all around us - they're essential in making circuit boards, lights, and even potato chip bags.
More details | Watch nowBlack Box – A flight data recorder
In designing an object an engineer must choose the proper material. Never is this more important than in the 'black box' flight data recorder.
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For my project I am giving a brief history of color theory with emphasis on how science and color theory have interacted. I focus on aspects like primary colors, how color is perceived, and the artists who were at the forefront of color and design. I....
More details | Watch nowA History of Bicycles
This presentation reviews the basic history of the bicycle starting with the Hobby Horse. We discuss significant changes to the bicycle in terms of efficiency, safety and comfort. These advances in bicycle technology include lighter construction, the....
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My presentation is on the history of flight, the physics of flight and the different types of aircraft that exist. This includes the Wright brothers , the Bernouli effect and jet propelled aircraft.
More details | Watch nowPlastic fantastic: electronics for the 21st century
Plastics - or, more correctly, polymers have traditionally been used by the electronics industry as passive materials. Now however, new types of polymers have been discovered which behave as semiconductors. For example, they can emit light when subje....
More details | Watch nowMicroscopy goes cold: secrets of frozen viruses
Viruses are a major cause of death and disease. Too small to be seen by light microscopy, they were first visualised about 50 years ago by electron microscopy. Dr. Crowther describes his work on the development of the methods and illustrates how he h....
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