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Geodesist and metrologist Henry Kater (1777-1835) invented Kater's pendulum in 1817 which enabled the strength of gravity to be determined
Blackfriars Road
from the paper 'An account of some organic remains found near Brentford
Printed in red
Vidae Falls waterfall in Crater Lake National Park, Oregon, USA Los Alamos National Laboratory Geodesist and metrologist Henry Kater
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