Horsepower is a unit of power that originated in the 18th century, coined by engineer James Watt to compare the output of steam engines with the power of draft horses. A fascinating aspect is the value assigned to this measurement: 1 British horsepower equals approximately 745.7 watts. To put this into perspective, this means that just one horsepower can light up more than ten 60-watt light bulbs!
Interestingly, the unit became widely adopted not for its precision but as a marketing tool. Since people were familiar with the strength of horses in everyday tasks, comparing engine power to horses made industrial power even more relatable and understandable during the Industrial Revolution. Today, horsepower continues to be an essential metric in the automotive and engine industries worldwide, despite its equine origins.
The milliwatt, a unit of power, is often seen in the realm of electronics, particularly in low-consumption devices. One milliwatt is equal to one-thousandth of a watt, making it a crucial measurement in the assessment of small but vital electricity flows. For example, many hearing aids and wristwatches consume power in the milliwatt range, showcasing the intricacy and efficiency of modern technology.
In the world of wireless communication, milliwatts are used to gauge signal strength, as even fractions of a watt can significantly impact data transmission quality. Interestingly, the tiny LEDs in your remote control likely operate at just a few milliwatts, yet they possess the ability to send clear, precise signals to your TV or stereo from across the room.
| Horsepower (British) | Milliwatts |
|---|---|
0
hp
|
0
mW
|
10
hp
|
7456998.71863
mW
|
20
hp
|
1.4914e+7
mW
|
30
hp
|
2.2371e+7
mW
|
40
hp
|
2.9828e+7
mW
|
50
hp
|
3.7285e+7
mW
|
60
hp
|
4.4742e+7
mW
|
70
hp
|
5.2199e+7
mW
|
80
hp
|
5.9656e+7
mW
|
90
hp
|
6.7113e+7
mW
|
100
hp
|
7.457e+7
mW
|
110
hp
|
8.2027e+7
mW
|
120
hp
|
8.9484e+7
mW
|
130
hp
|
9.6941e+7
mW
|
140
hp
|
1.04398e+8
mW
|
150
hp
|
1.11855e+8
mW
|
160
hp
|
1.19312e+8
mW
|
170
hp
|
1.26769e+8
mW
|
180
hp
|
1.34226e+8
mW
|
190
hp
|
1.41683e+8
mW
|
200
hp
|
1.4914e+8
mW
|
210
hp
|
1.56597e+8
mW
|
220
hp
|
1.64054e+8
mW
|
230
hp
|
1.71511e+8
mW
|
240
hp
|
1.78968e+8
mW
|
250
hp
|
1.86425e+8
mW
|
260
hp
|
1.93882e+8
mW
|
270
hp
|
2.01339e+8
mW
|
280
hp
|
2.08796e+8
mW
|
290
hp
|
2.16253e+8
mW
|
300
hp
|
2.2371e+8
mW
|
310
hp
|
2.31167e+8
mW
|
320
hp
|
2.38624e+8
mW
|
330
hp
|
2.46081e+8
mW
|
340
hp
|
2.53538e+8
mW
|
350
hp
|
2.60995e+8
mW
|
360
hp
|
2.68452e+8
mW
|
370
hp
|
2.75909e+8
mW
|
380
hp
|
2.83366e+8
mW
|
390
hp
|
2.90823e+8
mW
|
400
hp
|
2.9828e+8
mW
|
410
hp
|
3.05737e+8
mW
|
420
hp
|
3.13194e+8
mW
|
430
hp
|
3.20651e+8
mW
|
440
hp
|
3.28108e+8
mW
|
450
hp
|
3.35565e+8
mW
|
460
hp
|
3.43022e+8
mW
|
470
hp
|
3.50479e+8
mW
|
480
hp
|
3.57936e+8
mW
|
490
hp
|
3.65393e+8
mW
|
500
hp
|
3.7285e+8
mW
|
510
hp
|
3.80307e+8
mW
|
520
hp
|
3.87764e+8
mW
|
530
hp
|
3.95221e+8
mW
|
540
hp
|
4.02678e+8
mW
|
550
hp
|
4.10135e+8
mW
|
560
hp
|
4.17592e+8
mW
|
570
hp
|
4.25049e+8
mW
|
580
hp
|
4.32506e+8
mW
|
590
hp
|
4.39963e+8
mW
|
600
hp
|
4.4742e+8
mW
|
610
hp
|
4.54877e+8
mW
|
620
hp
|
4.62334e+8
mW
|
630
hp
|
4.69791e+8
mW
|
640
hp
|
4.77248e+8
mW
|
650
hp
|
4.84705e+8
mW
|
660
hp
|
4.92162e+8
mW
|
670
hp
|
4.99619e+8
mW
|
680
hp
|
5.07076e+8
mW
|
690
hp
|
5.14533e+8
mW
|
700
hp
|
5.2199e+8
mW
|
710
hp
|
5.29447e+8
mW
|
720
hp
|
5.36904e+8
mW
|
730
hp
|
5.44361e+8
mW
|
740
hp
|
5.51818e+8
mW
|
750
hp
|
5.59275e+8
mW
|
760
hp
|
5.66732e+8
mW
|
770
hp
|
5.74189e+8
mW
|
780
hp
|
5.81646e+8
mW
|
790
hp
|
5.89103e+8
mW
|
800
hp
|
5.9656e+8
mW
|
810
hp
|
6.04017e+8
mW
|
820
hp
|
6.11474e+8
mW
|
830
hp
|
6.18931e+8
mW
|
840
hp
|
6.26388e+8
mW
|
850
hp
|
6.33845e+8
mW
|
860
hp
|
6.41302e+8
mW
|
870
hp
|
6.48759e+8
mW
|
880
hp
|
6.56216e+8
mW
|
890
hp
|
6.63673e+8
mW
|
900
hp
|
6.7113e+8
mW
|
910
hp
|
6.78587e+8
mW
|
920
hp
|
6.86044e+8
mW
|
930
hp
|
6.93501e+8
mW
|
940
hp
|
7.00958e+8
mW
|
950
hp
|
7.08415e+8
mW
|
960
hp
|
7.15872e+8
mW
|
970
hp
|
7.23329e+8
mW
|
980
hp
|
7.30786e+8
mW
|
990
hp
|
7.38243e+8
mW
|
1000
hp
|
7.457e+8
mW
|
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