The laws list
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J.
joule; J (
after
J.P. Joule, 1818-1889)
The derived
SI
unit of energy defined as the amount of work done by moving an object through a distance of 1
m
by applying a force of 1
N
; it thus has units of
N
m
.
Joule-Thomson effect; Joule-Kelvin effect (J.P. Joule, W. Thomson [later Lord Kelvin])
The change in temperature that occurs when a gas expands into a region of lower pressure.
Joule's laws (J.P. Joule)
Joule's first law
The heat
Q
produced when a current
I
flows through a resistance
R
for a specified time
t
is given by
Q
=
I
2
R t
Joule's second law
The internal energy of an ideal gas is independent of its volume and pressure, depending only on its temperature.
Josephson effects (B.D. Josephson; 1962)
Electrical effects observed when two superconducting materials are separated by a thin layer of insulating material.
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