Other Anniversaries celebrated during the International Year of Light 2015

International Year of Light Blog

As we all no doubt know 2015 has been chosen to be “The International Year of Light and Light-based Technologies” because the anniversaries of a series of outstanding achievements in the history of the science of light are commemorated this year. One thousand years ago, in 1015, Alhazen published his works on optics. Two hundred years ago, in 1815, Fresnel proposed his notion of light as a wave and in 1865 Maxwell developed the electromagnetic theory of light, thereby unifying light, electricity and magnetism through “Maxwell’s synthesis”. Einstein explained the photoelectric effect in terms of quanta of light in 1905 and a century ago, in 1915, light was embedded in cosmology through his general relativity theory. Fifty years ago in 1965, Penzias and Wilson discovered the cosmic microwave background, an echo of the origin of the universe and evidence of the Big Bang, while 1965 was also the year of…

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