The torr is a unit of pressure named after the Italian physicist Evangelista Torricelli, who invented the barometer in the 17th century. It is defined as 1/760th of an atmosphere, approximating the pressure exerted by a one-millimeter column of mercury at 0 degrees Celsius. What makes the torr particularly interesting is its practical use in fields like vacuum technology and weather forecasting, where precise measurements of atmospheric pressure are crucial.
The legacy of Torricelli’s work is integral to meteorology and physics, as it opened paths for understanding atmospheric pressure. Beyond scientific circles, the torr is a reminder of human ingenuity in unraveling atmospheric mysteries and continues to play a vital role in today’s scientific advancements.
A “meter of water @ 4°C” is a unique unit used primarily to measure pressure. At this specific temperature, water reaches its maximum density, and the pressure exerted by a one-meter column of water is approximately 9.81 kilopascals or 0.0979 atmospheres. This scenario represents the optimal conditions for standardizing pressure measurements because the physical properties of water are most stable, reducing variances in calculations.
This unit is especially important in fields like plumbing and hydraulics, where accurate pressure measurements are crucial. Understanding these principles can lead to better designs in water distribution systems, preventing common issues such as pipe bursts or inefficient water flow, ensuring systems operate safely and efficiently.
Torr | Meters of water @ 4°C |
---|---|
0
torr
|
0
mH₂O
|
10
torr
|
0.135951
mH₂O
|
20
torr
|
0.271902
mH₂O
|
30
torr
|
0.407853
mH₂O
|
40
torr
|
0.543804
mH₂O
|
50
torr
|
0.679755
mH₂O
|
60
torr
|
0.815706
mH₂O
|
70
torr
|
0.951657
mH₂O
|
80
torr
|
1.08761
mH₂O
|
90
torr
|
1.22356
mH₂O
|
100
torr
|
1.35951
mH₂O
|
110
torr
|
1.49546
mH₂O
|
120
torr
|
1.63141
mH₂O
|
130
torr
|
1.76736
mH₂O
|
140
torr
|
1.90331
mH₂O
|
150
torr
|
2.03926
mH₂O
|
160
torr
|
2.17522
mH₂O
|
170
torr
|
2.31117
mH₂O
|
180
torr
|
2.44712
mH₂O
|
190
torr
|
2.58307
mH₂O
|
200
torr
|
2.71902
mH₂O
|
210
torr
|
2.85497
mH₂O
|
220
torr
|
2.99092
mH₂O
|
230
torr
|
3.12687
mH₂O
|
240
torr
|
3.26282
mH₂O
|
250
torr
|
3.39877
mH₂O
|
260
torr
|
3.53473
mH₂O
|
270
torr
|
3.67068
mH₂O
|
280
torr
|
3.80663
mH₂O
|
290
torr
|
3.94258
mH₂O
|
300
torr
|
4.07853
mH₂O
|
310
torr
|
4.21448
mH₂O
|
320
torr
|
4.35043
mH₂O
|
330
torr
|
4.48638
mH₂O
|
340
torr
|
4.62233
mH₂O
|
350
torr
|
4.75828
mH₂O
|
360
torr
|
4.89424
mH₂O
|
370
torr
|
5.03019
mH₂O
|
380
torr
|
5.16614
mH₂O
|
390
torr
|
5.30209
mH₂O
|
400
torr
|
5.43804
mH₂O
|
410
torr
|
5.57399
mH₂O
|
420
torr
|
5.70994
mH₂O
|
430
torr
|
5.84589
mH₂O
|
440
torr
|
5.98184
mH₂O
|
450
torr
|
6.11779
mH₂O
|
460
torr
|
6.25375
mH₂O
|
470
torr
|
6.3897
mH₂O
|
480
torr
|
6.52565
mH₂O
|
490
torr
|
6.6616
mH₂O
|
500
torr
|
6.79755
mH₂O
|
510
torr
|
6.9335
mH₂O
|
520
torr
|
7.06945
mH₂O
|
530
torr
|
7.2054
mH₂O
|
540
torr
|
7.34135
mH₂O
|
550
torr
|
7.4773
mH₂O
|
560
torr
|
7.61325
mH₂O
|
570
torr
|
7.74921
mH₂O
|
580
torr
|
7.88516
mH₂O
|
590
torr
|
8.02111
mH₂O
|
600
torr
|
8.15706
mH₂O
|
610
torr
|
8.29301
mH₂O
|
620
torr
|
8.42896
mH₂O
|
630
torr
|
8.56491
mH₂O
|
640
torr
|
8.70086
mH₂O
|
650
torr
|
8.83681
mH₂O
|
660
torr
|
8.97276
mH₂O
|
670
torr
|
9.10872
mH₂O
|
680
torr
|
9.24467
mH₂O
|
690
torr
|
9.38062
mH₂O
|
700
torr
|
9.51657
mH₂O
|
710
torr
|
9.65252
mH₂O
|
720
torr
|
9.78847
mH₂O
|
730
torr
|
9.92442
mH₂O
|
740
torr
|
10.06037
mH₂O
|
750
torr
|
10.19632
mH₂O
|
760
torr
|
10.33227
mH₂O
|
770
torr
|
10.46823
mH₂O
|
780
torr
|
10.60418
mH₂O
|
790
torr
|
10.74013
mH₂O
|
800
torr
|
10.87608
mH₂O
|
810
torr
|
11.01203
mH₂O
|
820
torr
|
11.14798
mH₂O
|
830
torr
|
11.28393
mH₂O
|
840
torr
|
11.41988
mH₂O
|
850
torr
|
11.55583
mH₂O
|
860
torr
|
11.69178
mH₂O
|
870
torr
|
11.82774
mH₂O
|
880
torr
|
11.96369
mH₂O
|
890
torr
|
12.09964
mH₂O
|
900
torr
|
12.23559
mH₂O
|
910
torr
|
12.37154
mH₂O
|
920
torr
|
12.50749
mH₂O
|
930
torr
|
12.64344
mH₂O
|
940
torr
|
12.77939
mH₂O
|
950
torr
|
12.91534
mH₂O
|
960
torr
|
13.05129
mH₂O
|
970
torr
|
13.18725
mH₂O
|
980
torr
|
13.3232
mH₂O
|
990
torr
|
13.45915
mH₂O
|
1000
torr
|
13.5951
mH₂O
|
If you like the website, share it on social media.