Newton's cradle, artwork
Newton's cradle, artwork. This device consists of a number of steel balls suspended from a frame (not seen) in a horizontal line. Here, one ball on the end (left) has been pulled back and allowed to swing forward and downward under gravity. When it impacts the stationary line of balls, its momentum is transferred along the line, causing the ball on the opposite end to move upwards to a similar height. This sequence of impacts continues until all the initial energy has been lost to friction and sound. This apparatus, often used as a desk toy, demonstrates the conservation of momentum and energy.
© DETLEV VAN RAVENSWAAY/SCIENCE PHOTO LIBRARY
Science - Isaac Newton Telescope - Royal Greenwich Observatory - Herstmonceux, Hailsham, East Sussex
The building which houses the 98-inch Isaac Newton telescope, the largest to be built in Western Europe, at Royal Greenwich Observatory, Herstmonceux, Hailsham, East Sussex.
© PA Archive/PA Images
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Advert for E. Johnson chrome leather ulster 1923
Winter motoring, for men and women who motors in the cold winter months, either for work or pleasure, a warm leather ulster is indispensable. This leather motor ulster has been specially designed for private car driving, inasmuch as it is at once excellent in appearance and will stand the hardest wear. It is chrome-tanned, rendering it absolutely damp and wind-proof, and is warm and comfortable and lined with camel fleece or teddy bear.
© Illustrated London News Ltd/Mary Evans