What is the meaning of negative exponents in SI units?
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Please could someone explain the reason for using negative superscripts in SI units, and more precisely when to use negative versus positive?
I do not understand, for example, why the volume of a fuel would be given in m3 but heat of combustion would be given in J m-3.
mechanical-engineering
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
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add a comment |
$begingroup$
Please could someone explain the reason for using negative superscripts in SI units, and more precisely when to use negative versus positive?
I do not understand, for example, why the volume of a fuel would be given in m3 but heat of combustion would be given in J m-3.
mechanical-engineering
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
$endgroup$
add a comment |
$begingroup$
Please could someone explain the reason for using negative superscripts in SI units, and more precisely when to use negative versus positive?
I do not understand, for example, why the volume of a fuel would be given in m3 but heat of combustion would be given in J m-3.
mechanical-engineering
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
$endgroup$
Please could someone explain the reason for using negative superscripts in SI units, and more precisely when to use negative versus positive?
I do not understand, for example, why the volume of a fuel would be given in m3 but heat of combustion would be given in J m-3.
mechanical-engineering
mechanical-engineering
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
asked Dec 28 '18 at 11:58
tsvallendertsvallender
1112
1112
add a comment |
add a comment |
1 Answer
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Negative exponents means per. In countries that were heavily influenced by the British, units such as meters per second would most likely be written $m/s$. In Europe and elsewhere it could be written with negative exponents as $m.s^{-1}$.
In your example $J m^{-3}$ means joules per cubic meter.
answered Dec 28 '18 at 12:25
FredFred
7,36132438
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1 Answer
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1 Answer
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$begingroup$
Negative exponents means per. In countries that were heavily influenced by the British, units such as meters per second would most likely be written $m/s$. In Europe and elsewhere it could be written with negative exponents as $m.s^{-1}$.
In your example $J m^{-3}$ means joules per cubic meter.
answered Dec 28 '18 at 12:25
FredFred
7,36132438
$endgroup$
add a comment |
$begingroup$
Negative exponents means per. In countries that were heavily influenced by the British, units such as meters per second would most likely be written $m/s$. In Europe and elsewhere it could be written with negative exponents as $m.s^{-1}$.
In your example $J m^{-3}$ means joules per cubic meter.
answered Dec 28 '18 at 12:25
FredFred
7,36132438
$endgroup$
add a comment |
$begingroup$
Negative exponents means per. In countries that were heavily influenced by the British, units such as meters per second would most likely be written $m/s$. In Europe and elsewhere it could be written with negative exponents as $m.s^{-1}$.
In your example $J m^{-3}$ means joules per cubic meter.
answered Dec 28 '18 at 12:25
FredFred
7,36132438
$endgroup$
Negative exponents means per. In countries that were heavily influenced by the British, units such as meters per second would most likely be written $m/s$. In Europe and elsewhere it could be written with negative exponents as $m.s^{-1}$.
In your example $J m^{-3}$ means joules per cubic meter.
answered Dec 28 '18 at 12:25
FredFred
7,36132438
answered Dec 28 '18 at 12:25
FredFred
7,36132438
answered Dec 28 '18 at 12:25
FredFred
7,36132438
answered Dec 28 '18 at 12:25
FredFred
7,36132438
7,36132438
add a comment |
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