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.
The megapascal (MPa) is a unit of pressure that is often used in a variety of scientific and engineering calculations, especially in materials science. One fascinating aspect of the megapascal is how it bridges different disciplines, such as geology, where it helps measure the strength of rocks, and civil engineering, where it is crucial for understanding the stress in structures. Interestingly, 1 MPa is equivalent to the pressure exerted by a weight of about 10.2 metric tons on a single square meter, illustrating its significant impact compared to everyday pressures we encounter.
In the realm of meteorology, pressures measured in MPa can indicate catastrophic weather conditions, as atmospheric pressure is usually measured in hectorpascals due to its lower scale. Also noteworthy is the use of MPa in automotive engine performance, where it assesses combustion forces, underlying the importance of this unit in ensuring both vehicle efficiency and safety. Thus, the megapascal is vital across varied fields, reflecting the diverse applications of pressure measurement in modern technology and natural phenomena.
Torr | Megapascals |
---|---|
0
torr
|
0
MPa
|
10
torr
|
0.00133322
MPa
|
20
torr
|
0.00266645
MPa
|
30
torr
|
0.00399967
MPa
|
40
torr
|
0.00533289
MPa
|
50
torr
|
0.00666612
MPa
|
60
torr
|
0.00799934
MPa
|
70
torr
|
0.00933257
MPa
|
80
torr
|
0.0106658
MPa
|
90
torr
|
0.011999
MPa
|
100
torr
|
0.0133322
MPa
|
110
torr
|
0.0146655
MPa
|
120
torr
|
0.0159987
MPa
|
130
torr
|
0.0173319
MPa
|
140
torr
|
0.0186651
MPa
|
150
torr
|
0.0199984
MPa
|
160
torr
|
0.0213316
MPa
|
170
torr
|
0.0226648
MPa
|
180
torr
|
0.023998
MPa
|
190
torr
|
0.0253313
MPa
|
200
torr
|
0.0266645
MPa
|
210
torr
|
0.0279977
MPa
|
220
torr
|
0.0293309
MPa
|
230
torr
|
0.0306641
MPa
|
240
torr
|
0.0319974
MPa
|
250
torr
|
0.0333306
MPa
|
260
torr
|
0.0346638
MPa
|
270
torr
|
0.035997
MPa
|
280
torr
|
0.0373303
MPa
|
290
torr
|
0.0386635
MPa
|
300
torr
|
0.0399967
MPa
|
310
torr
|
0.0413299
MPa
|
320
torr
|
0.0426632
MPa
|
330
torr
|
0.0439964
MPa
|
340
torr
|
0.0453296
MPa
|
350
torr
|
0.0466628
MPa
|
360
torr
|
0.0479961
MPa
|
370
torr
|
0.0493293
MPa
|
380
torr
|
0.0506625
MPa
|
390
torr
|
0.0519957
MPa
|
400
torr
|
0.0533289
MPa
|
410
torr
|
0.0546622
MPa
|
420
torr
|
0.0559954
MPa
|
430
torr
|
0.0573286
MPa
|
440
torr
|
0.0586618
MPa
|
450
torr
|
0.0599951
MPa
|
460
torr
|
0.0613283
MPa
|
470
torr
|
0.0626615
MPa
|
480
torr
|
0.0639947
MPa
|
490
torr
|
0.065328
MPa
|
500
torr
|
0.0666612
MPa
|
510
torr
|
0.0679944
MPa
|
520
torr
|
0.0693276
MPa
|
530
torr
|
0.0706609
MPa
|
540
torr
|
0.0719941
MPa
|
550
torr
|
0.0733273
MPa
|
560
torr
|
0.0746605
MPa
|
570
torr
|
0.0759938
MPa
|
580
torr
|
0.077327
MPa
|
590
torr
|
0.0786602
MPa
|
600
torr
|
0.0799934
MPa
|
610
torr
|
0.0813266
MPa
|
620
torr
|
0.0826599
MPa
|
630
torr
|
0.0839931
MPa
|
640
torr
|
0.0853263
MPa
|
650
torr
|
0.0866595
MPa
|
660
torr
|
0.0879928
MPa
|
670
torr
|
0.089326
MPa
|
680
torr
|
0.0906592
MPa
|
690
torr
|
0.0919924
MPa
|
700
torr
|
0.0933257
MPa
|
710
torr
|
0.0946589
MPa
|
720
torr
|
0.0959921
MPa
|
730
torr
|
0.0973253
MPa
|
740
torr
|
0.0986586
MPa
|
750
torr
|
0.0999918
MPa
|
760
torr
|
0.101325
MPa
|
770
torr
|
0.102658
MPa
|
780
torr
|
0.103991
MPa
|
790
torr
|
0.105325
MPa
|
800
torr
|
0.106658
MPa
|
810
torr
|
0.107991
MPa
|
820
torr
|
0.109324
MPa
|
830
torr
|
0.110658
MPa
|
840
torr
|
0.111991
MPa
|
850
torr
|
0.113324
MPa
|
860
torr
|
0.114657
MPa
|
870
torr
|
0.11599
MPa
|
880
torr
|
0.117324
MPa
|
890
torr
|
0.118657
MPa
|
900
torr
|
0.11999
MPa
|
910
torr
|
0.121323
MPa
|
920
torr
|
0.122657
MPa
|
930
torr
|
0.12399
MPa
|
940
torr
|
0.125323
MPa
|
950
torr
|
0.126656
MPa
|
960
torr
|
0.127989
MPa
|
970
torr
|
0.129323
MPa
|
980
torr
|
0.130656
MPa
|
990
torr
|
0.131989
MPa
|
1000
torr
|
0.133322
MPa
|
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