Named after the English physicist James Prescott Joule, the joule is a unit of energy in the International System of Units. A single joule represents the energy transferred when a force of one newton acts over a meter. To put it in everyday terms, the energy used to lift a small apple one meter off the ground is approximately one joule. Interestingly, the joule is also the energy released in one second by a current of one ampere through a resistance of one ohm, showcasing its versatility across both mechanical and electrical domains.
While joules measure energy, they can also power curiosity. For instance, the daily recommended caloric intake for an average adult translates to roughly 8,700,000 joules. This highlights the joule’s role not only in physics but also in our nutrition and daily energy consumption, offering a glimpse into the complex interplay between energy, food, and our bodies.
The gigajoule (GJ) is a unit of energy equivalent to one billion joules. It offers a convenient metric for measuring substantial energy quantities and is frequently used in contexts like natural gas and electrical energy. For instance, one gigajoule can power an average household’s energy needs for about three days, depending on energy consumption habits. Interestingly, it’s also roughly equivalent to the energy contained in 26.8 gallons of gasoline, highlighting its significance in both domestic and industrial contexts.
Beyond its everyday applications, the gigajoule also plays a critical role in scientific fields. In the realm of seismology, for example, a moderate earthquake releases energy comparable to a few gigajoules, illustrating the vast power of natural phenomena. This demonstrates how understanding gigajoules can offer insights into both human technology and the forces of nature.
Joules | Gigajoules |
---|---|
0
J
|
0
GJ
|
100
J
|
1e-7
GJ
|
200
J
|
2e-7
GJ
|
300
J
|
3e-7
GJ
|
400
J
|
4e-7
GJ
|
500
J
|
5e-7
GJ
|
600
J
|
6e-7
GJ
|
700
J
|
7e-7
GJ
|
800
J
|
8e-7
GJ
|
900
J
|
9e-7
GJ
|
1000
J
|
0.000001
GJ
|
1100
J
|
0.0000011
GJ
|
1200
J
|
0.0000012
GJ
|
1300
J
|
0.0000013
GJ
|
1400
J
|
0.0000014
GJ
|
1500
J
|
0.0000015
GJ
|
1600
J
|
0.0000016
GJ
|
1700
J
|
0.0000017
GJ
|
1800
J
|
0.0000018
GJ
|
1900
J
|
0.0000019
GJ
|
2000
J
|
0.000002
GJ
|
2100
J
|
0.0000021
GJ
|
2200
J
|
0.0000022
GJ
|
2300
J
|
0.0000023
GJ
|
2400
J
|
0.0000024
GJ
|
2500
J
|
0.0000025
GJ
|
2600
J
|
0.0000026
GJ
|
2700
J
|
0.0000027
GJ
|
2800
J
|
0.0000028
GJ
|
2900
J
|
0.0000029
GJ
|
3000
J
|
0.000003
GJ
|
3100
J
|
0.0000031
GJ
|
3200
J
|
0.0000032
GJ
|
3300
J
|
0.0000033
GJ
|
3400
J
|
0.0000034
GJ
|
3500
J
|
0.0000035
GJ
|
3600
J
|
0.0000036
GJ
|
3700
J
|
0.0000037
GJ
|
3800
J
|
0.0000038
GJ
|
3900
J
|
0.0000039
GJ
|
4000
J
|
0.000004
GJ
|
4100
J
|
0.0000041
GJ
|
4200
J
|
0.0000042
GJ
|
4300
J
|
0.0000043
GJ
|
4400
J
|
0.0000044
GJ
|
4500
J
|
0.0000045
GJ
|
4600
J
|
0.0000046
GJ
|
4700
J
|
0.0000047
GJ
|
4800
J
|
0.0000048
GJ
|
4900
J
|
0.0000049
GJ
|
5000
J
|
0.000005
GJ
|
5100
J
|
0.0000051
GJ
|
5200
J
|
0.0000052
GJ
|
5300
J
|
0.0000053
GJ
|
5400
J
|
0.0000054
GJ
|
5500
J
|
0.0000055
GJ
|
5600
J
|
0.0000056
GJ
|
5700
J
|
0.0000057
GJ
|
5800
J
|
0.0000058
GJ
|
5900
J
|
0.0000059
GJ
|
6000
J
|
0.000006
GJ
|
6100
J
|
0.0000061
GJ
|
6200
J
|
0.0000062
GJ
|
6300
J
|
0.0000063
GJ
|
6400
J
|
0.0000064
GJ
|
6500
J
|
0.0000065
GJ
|
6600
J
|
0.0000066
GJ
|
6700
J
|
0.0000067
GJ
|
6800
J
|
0.0000068
GJ
|
6900
J
|
0.0000069
GJ
|
7000
J
|
0.000007
GJ
|
7100
J
|
0.0000071
GJ
|
7200
J
|
0.0000072
GJ
|
7300
J
|
0.0000073
GJ
|
7400
J
|
0.0000074
GJ
|
7500
J
|
0.0000075
GJ
|
7600
J
|
0.0000076
GJ
|
7700
J
|
0.0000077
GJ
|
7800
J
|
0.0000078
GJ
|
7900
J
|
0.0000079
GJ
|
8000
J
|
0.000008
GJ
|
8100
J
|
0.0000081
GJ
|
8200
J
|
0.0000082
GJ
|
8300
J
|
0.0000083
GJ
|
8400
J
|
0.0000084
GJ
|
8500
J
|
0.0000085
GJ
|
8600
J
|
0.0000086
GJ
|
8700
J
|
0.0000087
GJ
|
8800
J
|
0.0000088
GJ
|
8900
J
|
0.0000089
GJ
|
9000
J
|
0.000009
GJ
|
9100
J
|
0.0000091
GJ
|
9200
J
|
0.0000092
GJ
|
9300
J
|
0.0000093
GJ
|
9400
J
|
0.0000094
GJ
|
9500
J
|
0.0000095
GJ
|
9600
J
|
0.0000096
GJ
|
9700
J
|
0.0000097
GJ
|
9800
J
|
0.0000098
GJ
|
9900
J
|
0.0000099
GJ
|
10000
J
|
0.00001
GJ
|
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