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Light and Dark : Season 1
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Air date: 10 Oct '16 - 2 episodesProfessor Jim Al-Khalili shows how, by uncovering its secrets, scientists have used light to reveal the universe.
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List of Episodes (2)
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Light and Dark (2016)
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1. Light
10 Oct '16The story of how we used light to reveal the cosmos begins in the 3rd century BC when, by trying to understand the tricks of perspective, the Greek mathematician Euclid discovered that light travels in straight lines. In Renaissance Italy 2,000 years later, Galileo Galilei did just that by using the lenses of his simple telescope to reveal our true place in the cosmos.With each new insight into the nature of light came a fresh understanding of the cosmos. In the 1670s, the Danish astronomer Ole
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Light and Dark (2016)
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2. Dark
17 Oct '16The first hints that there might be more out there than meets the eye emerged from the gloom in 1846 with the discovery of the planet Neptune. In the middle of the 20th century scientists discovered dark matter and in the late 1990s dark energy. Jim explores the quest to uncover the nature of dark energy and to see dark matter pull the first stars and galaxies together, a quest that involves peering into the darkest period in the cosmos's past.
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