MAKE A MEME View Large Image Using Kater pendulum in India.png Drawing of the measurement of the acceleration of gravity with an invariable pendulum at Madras India by British astronomer John Goldingham in 1821 From his 1822 paper to the Royal Society The pendulum ...
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Keywords: Using Kater pendulum in India.png Drawing of the measurement of the acceleration of gravity with an invariable pendulum at Madras India by British astronomer John Goldingham in 1821 From his 1822 paper to the Royal Society The pendulum swings on two knife edge pivots suspended from a bracket on the wall in front of a precision pendulum clock set to correct time by the stars The periods of the two pendulums are compared using a sight to eliminate parallax error The strength of gravity is calculated from the period of the pendulum Alterations to image Removed caption and frame Image contains aliasing artifacts from scanning of original halftone image partially removed with Gimp Fourier transform tool Converted to 64 greyscale PNG Downloaded 2009-01-20 from http //books google com/books id A1IqAAAAMAAJ pg RA2-PA317 Victor F Lenzen Robert P Multauf 1964 'Paper 44 Development of gravity pendulums in the 19th century' in United States National Museum Bulletin 240 Contributions from the Museum of History and Technology reprinted in Bulletin of the Smithsonian Institution 1964 Smithsonian Institution Press USA p 317 fig 13 on Google Books Text credited drawing to John Goldingham 1822 'Observations for Ascertaining the Length of the Pendulum at Madras in the East Indies' Philosophical Transactions of the Royal Society Vol 112 p 127 1822 John Goldingham Public domain - Goldingham died in 1849 PD-old Pendulums Precision pendulum clocks 19th-century longcase clocks Gravimetry Astronomy in Tamil Nadu 1822 in Chennai Parallax Measurement in India
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