July 11, 2012
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In the 1690s Sir Isaac Newton’s experiments with prisms showed that the colors of the spectrum are contained in white light. Therefore, when we see colour we are also ‘seeing’ light – an invisible, intangible substance that otherwise lies beyond … Continue reading
June 23, 2012
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In the 1690s Sir Isaac Newton’s experiments with prisms showed that the colours of the spectrum are contained in white light. Therefore, when we see colour we are also ‘seeing’ light – an invisible, intangible substance that otherwise lies beyond … Continue reading
June 21, 2012
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A description is given of James Clerk Maxwell’s strategy, in his early study of the additive mixing of light from colored samples. He used the scattered daylight from known areas of card coated with artists’ pigments. Vermilion, emerald green and … Continue reading
June 17, 2012
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For centuries artists and natural scientists have been captivated by the colour changing effects of iridescence. Producing brilliant fl ashes of colour in the natural world, the phenomenon is best known in the displays of ‘living jewels’, e.g. tropical birds … Continue reading
June 8, 2012
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A thermo-hydraulics experiment performed on the mock-up of the liquid-metal cooled steel target container of a spallation neutron source. The beam of the Paul Scherrer Institute 600 MeV proton accelerator is used to obtain a high-neutron flux. This bombards a … Continue reading