The watt-minute is a lesser-known unit of energy, yet it plays a significant role in understanding everyday energy consumption. It is equivalent to 60 joules and is simply the amount of energy produced or consumed by a power of one watt over one minute. Although not commonly used in everyday measurements, watt-minutes can be instrumental in more precise energy calculations, such as for electrical appliances or industrial equipment, providing insights between larger units like kilowatt-hours and smaller units like joules.
Intriguingly, it takes roughly 15 watt-minutes to charge a modern smartphone for one minute of talk time. This highlights how even small units can offer a clearer perspective on our energy usage, encouraging us to be more mindful of our energy habits!
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.
Watt-minutes | Gigajoules |
---|---|
0
Wm
|
0
GJ
|
10
Wm
|
6e-7
GJ
|
20
Wm
|
0.0000012
GJ
|
30
Wm
|
0.0000018
GJ
|
40
Wm
|
0.0000024
GJ
|
50
Wm
|
0.000003
GJ
|
60
Wm
|
0.0000036
GJ
|
70
Wm
|
0.0000042
GJ
|
80
Wm
|
0.0000048
GJ
|
90
Wm
|
0.0000054
GJ
|
100
Wm
|
0.000006
GJ
|
110
Wm
|
0.0000066
GJ
|
120
Wm
|
0.0000072
GJ
|
130
Wm
|
0.0000078
GJ
|
140
Wm
|
0.0000084
GJ
|
150
Wm
|
0.000009
GJ
|
160
Wm
|
0.0000096
GJ
|
170
Wm
|
0.0000102
GJ
|
180
Wm
|
0.0000108
GJ
|
190
Wm
|
0.0000114
GJ
|
200
Wm
|
0.000012
GJ
|
210
Wm
|
0.0000126
GJ
|
220
Wm
|
0.0000132
GJ
|
230
Wm
|
0.0000138
GJ
|
240
Wm
|
0.0000144
GJ
|
250
Wm
|
0.000015
GJ
|
260
Wm
|
0.0000156
GJ
|
270
Wm
|
0.0000162
GJ
|
280
Wm
|
0.0000168
GJ
|
290
Wm
|
0.0000174
GJ
|
300
Wm
|
0.000018
GJ
|
310
Wm
|
0.0000186
GJ
|
320
Wm
|
0.0000192
GJ
|
330
Wm
|
0.0000198
GJ
|
340
Wm
|
0.0000204
GJ
|
350
Wm
|
0.000021
GJ
|
360
Wm
|
0.0000216
GJ
|
370
Wm
|
0.0000222
GJ
|
380
Wm
|
0.0000228
GJ
|
390
Wm
|
0.0000234
GJ
|
400
Wm
|
0.000024
GJ
|
410
Wm
|
0.0000246
GJ
|
420
Wm
|
0.0000252
GJ
|
430
Wm
|
0.0000258
GJ
|
440
Wm
|
0.0000264
GJ
|
450
Wm
|
0.000027
GJ
|
460
Wm
|
0.0000276
GJ
|
470
Wm
|
0.0000282
GJ
|
480
Wm
|
0.0000288
GJ
|
490
Wm
|
0.0000294
GJ
|
500
Wm
|
0.00003
GJ
|
510
Wm
|
0.0000306
GJ
|
520
Wm
|
0.0000312
GJ
|
530
Wm
|
0.0000318
GJ
|
540
Wm
|
0.0000324
GJ
|
550
Wm
|
0.000033
GJ
|
560
Wm
|
0.0000336
GJ
|
570
Wm
|
0.0000342
GJ
|
580
Wm
|
0.0000348
GJ
|
590
Wm
|
0.0000354
GJ
|
600
Wm
|
0.000036
GJ
|
610
Wm
|
0.0000366
GJ
|
620
Wm
|
0.0000372
GJ
|
630
Wm
|
0.0000378
GJ
|
640
Wm
|
0.0000384
GJ
|
650
Wm
|
0.000039
GJ
|
660
Wm
|
0.0000396
GJ
|
670
Wm
|
0.0000402
GJ
|
680
Wm
|
0.0000408
GJ
|
690
Wm
|
0.0000414
GJ
|
700
Wm
|
0.000042
GJ
|
710
Wm
|
0.0000426
GJ
|
720
Wm
|
0.0000432
GJ
|
730
Wm
|
0.0000438
GJ
|
740
Wm
|
0.0000444
GJ
|
750
Wm
|
0.000045
GJ
|
760
Wm
|
0.0000456
GJ
|
770
Wm
|
0.0000462
GJ
|
780
Wm
|
0.0000468
GJ
|
790
Wm
|
0.0000474
GJ
|
800
Wm
|
0.000048
GJ
|
810
Wm
|
0.0000486
GJ
|
820
Wm
|
0.0000492
GJ
|
830
Wm
|
0.0000498
GJ
|
840
Wm
|
0.0000504
GJ
|
850
Wm
|
0.000051
GJ
|
860
Wm
|
0.0000516
GJ
|
870
Wm
|
0.0000522
GJ
|
880
Wm
|
0.0000528
GJ
|
890
Wm
|
0.0000534
GJ
|
900
Wm
|
0.000054
GJ
|
910
Wm
|
0.0000546
GJ
|
920
Wm
|
0.0000552
GJ
|
930
Wm
|
0.0000558
GJ
|
940
Wm
|
0.0000564
GJ
|
950
Wm
|
0.000057
GJ
|
960
Wm
|
0.0000576
GJ
|
970
Wm
|
0.0000582
GJ
|
980
Wm
|
0.0000588
GJ
|
990
Wm
|
0.0000594
GJ
|
1000
Wm
|
0.00006
GJ
|
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