Fireheart318

What does 'G' mean on the altimeter?

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I know m = Meters, K = Kilometers, M = Megameters, but what does G mean? Gazillions? And what about T and Z?

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Gigameters

EDIT: Ninja'd

Metric prefixes in everyday use
Text Symbol Factor Power
exa E 1000000000000000000 1018
peta P 1000000000000000 1015
tera T 1000000000000 1012
giga G 1000000000 109
mega M 1000000 106
kilo k 1000 103
hecto h 100 102
deca da 10 101
(none) (none) 1 100
deci d 0.1 10−1
centi c 0.01 10−2
milli m 0.001 10−3
micro μ 0.000001 10−6
nano n 0.000000001 10−9
pico p 0.000000000001 10−12
femto f 0.000000000000001 10−15
atto a 0.000000000000000001 10−18

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33 minutes ago, Alshain said:

Gigameters

EDIT: Ninja'd

Metric prefixes in everyday use
Text Symbol Factor Power
exa E 1000000000000000000 1018
peta P 1000000000000000 1015
tera T 1000000000000 1012
giga G 1000000000 109
mega M 1000000 106
kilo k 1000 103
hecto h 100 102
deca da 10 101
(none) (none) 1 100
deci d 0.1 10−1
centi c 0.01 10−2
milli m 0.001 10−3
micro μ 0.000001 10−6
nano n 0.000000001 10−9
pico p 0.000000000001 10−12
femto f 0.000000000000001 10−15
atto a 0.000000000000000001 10−18

In addition to that, Z is zetta- or 1021 and Y is yotta- or 1024. I don't think there are any official names beyond that.

Edited by Gaarst
There are 2 "t"s in "zetta"

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9 minutes ago, Gaarst said:

In addition to that, Z is zetta- or 1021 and Y is yotta- or 1024. I don't think there are any official names beyond that.

Also, there are zepto- or 10-21 and yocto- or 10-24.  And you're right:  there are no official names after that.  A zettametre describes distances between galaxies; a yottametre describes the sizes of superclusters.  At these scales, megaparsecs make more sense--assuming, of course, that any measure of such distances truly makes sense.

On the small side, a zeptometre is ten thousand times smaller than a proton--again, assuming that 'distance' at such scales makes any sense.  It and the yoctometre sit uncomfortably between the range where ångströms are useful and where you really should just be using multiples of the Planck length.

Edited by Zhetaan

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1 hour ago, Gaarst said:

In addition to that, Z is zetta- or 1021 and Y is yotta- or 1024. I don't think there are any official names beyond that.

Yeah, I just copied that list from Wikipedia.  I'm surprised the formatting held.

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Don't forget that the googol (not Google!) is out there "somewhere" ^^.
(10 ^ 100).

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