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Terrestrial animals Terrestrial animals

Timothy J. Bradley

in Animal Osmoregulation

Published in print:
2008
Published Online:
April 2010
ISBN:
9780198569961
eISBN:
9780191728273
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198569961.003.0008
Subject:
Biology, Animal Biology

Terrestrial animals face extremely large gradients for the activity of water between their bodily fluids and the dry atmosphere that surrounds them. The capacity of air to hold water vapour varies ... More


Better accuracy from simple pendulums

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0001
Subject:
Physics, History of Physics

This chapter deals with simple pendulums and with several things that can be done to improve their accuracy. Most of the items have only a minor effect on accuracy, but they add up. The pendulum ... More


Pendulum rod materials

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0021
Subject:
Physics, History of Physics

Over time, several different materials have been used for the pendulum rod such as steel, wood, and invar. The best material is quartz because of its proven stability and low thermal expansion. Steel ... More


Effect of the clock case walls on a pendulum

Robert James Matthys

in Accurate Clock Pendulums

Published in print:
2004
Published Online:
January 2010
ISBN:
9780198529712
eISBN:
9780191712791
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198529712.003.0031
Subject:
Physics, History of Physics

This chapter describes an experiment designed to determine the effect of the walls of a pendulum clock case on a pendulum. The basic experimental approach was to measure the pendulum's clock rate and ... More


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