
Chemistry: A Key to Human Progress
Basic research in science has greatly increased our understanding of nature, expanded frontiers of inquiry, shown us how little we know, triggered creative waves of invention and innovation, and prompted technological breakthroughs that were inconcei....
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Diffraction and Fourier Transforms

DNA between Physics and Biology
The association of DNA with water is known since the deciphering of its double helical structure by X-Ray diffraction in 1953 (Watson, Crick, Wilkins and Franklin). However the power of DNA for organizing water seems to go far beyond the direct fill....
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Electron Waves Unveil The Microcosmos
Since the time of Faraday lines of force in space have been 'observed' by sprinkling iron filings around magnet. The lecturer explains how, with modern techniques we can 'see' lines of force inside a solid magnet. The studies reveal a fascinating dyn....
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From Spinwaves to Giant Magnetoresistance (GMR) and Beyond
Standing spinwaves and surface waves in layered magnetic structures can be used for the detection and quantitative evaluation of interlayer exchange coupling (IEC). Using this method antiferromagnetic IEC has been found in Fe/Cr/Fe layered structure....
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Gravitational waves and the early universe
Mark Hindmarch talks about our understanding of how we explain the immediate aftermath of the Big Bang.
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Human Sound
Sound is produced in the larynx; filtering it in the vocal tract produces formants and phonemes. The acoustics, mechanics and some neurobiology of hearing. Pitch perception.
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Interference and consonance
Superposing waves with different frequencies gives beats and Tartini tones. Removing beats gives consonance. Tuning consonances gives temperament.
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Letter from the Past – 10 – Who are the English?
No 10 of ten talks examining the formation of the USA and its early development - from an English point of view. This episode shows how England and the USA have both increased their populations by waves of immigrants from many different areas.
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