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.
Pounds per square inch (psi) is a crucial unit of pressure measurement, widely used across various industries, including automotive, aviation, and even space exploration. One interesting fact is that a typical car tire is inflated to around 30 psi, but did you know that a commercial jetliner’s cabin is pressurized to a reduced level of 11 psi to simulate being at a comfortable altitude of about 6,000-8,000 feet? This helps passengers avoid the stress of low oxygen levels while flying at over 35,000 feet, where the atmospheric pressure is a meager 4 psi.
Moreover, psi is pivotal in assessing the force exerted on surfaces. If you’ve ever wondered why deep-sea submarines have thick hulls, it’s because they must withstand pressures of around 8,800 psi at depths of 6 miles beneath the ocean’s surface! This ensures safe exploration of the mysterious deep-sea world, showcasing psi’s significance in enabling human feats in extreme environments.
Megapascals | Pounds per square inch |
---|---|
0
MPa
|
0
psi
|
1
MPa
|
145.03768
psi
|
2
MPa
|
290.07536
psi
|
3
MPa
|
435.11304
psi
|
4
MPa
|
580.15072
psi
|
5
MPa
|
725.1884
psi
|
6
MPa
|
870.22608
psi
|
7
MPa
|
1015.26377
psi
|
8
MPa
|
1160.30145
psi
|
9
MPa
|
1305.33913
psi
|
10
MPa
|
1450.37681
psi
|
11
MPa
|
1595.41449
psi
|
12
MPa
|
1740.45217
psi
|
13
MPa
|
1885.48985
psi
|
14
MPa
|
2030.52753
psi
|
15
MPa
|
2175.56521
psi
|
16
MPa
|
2320.60289
psi
|
17
MPa
|
2465.64057
psi
|
18
MPa
|
2610.67825
psi
|
19
MPa
|
2755.71593
psi
|
20
MPa
|
2900.75362
psi
|
21
MPa
|
3045.7913
psi
|
22
MPa
|
3190.82898
psi
|
23
MPa
|
3335.86666
psi
|
24
MPa
|
3480.90434
psi
|
25
MPa
|
3625.94202
psi
|
26
MPa
|
3770.9797
psi
|
27
MPa
|
3916.01738
psi
|
28
MPa
|
4061.05506
psi
|
29
MPa
|
4206.09274
psi
|
30
MPa
|
4351.13042
psi
|
31
MPa
|
4496.1681
psi
|
32
MPa
|
4641.20578
psi
|
33
MPa
|
4786.24347
psi
|
34
MPa
|
4931.28115
psi
|
35
MPa
|
5076.31883
psi
|
36
MPa
|
5221.35651
psi
|
37
MPa
|
5366.39419
psi
|
38
MPa
|
5511.43187
psi
|
39
MPa
|
5656.46955
psi
|
40
MPa
|
5801.50723
psi
|
41
MPa
|
5946.54491
psi
|
42
MPa
|
6091.58259
psi
|
43
MPa
|
6236.62027
psi
|
44
MPa
|
6381.65795
psi
|
45
MPa
|
6526.69564
psi
|
46
MPa
|
6671.73332
psi
|
47
MPa
|
6816.771
psi
|
48
MPa
|
6961.80868
psi
|
49
MPa
|
7106.84636
psi
|
50
MPa
|
7251.88404
psi
|
51
MPa
|
7396.92172
psi
|
52
MPa
|
7541.9594
psi
|
53
MPa
|
7686.99708
psi
|
54
MPa
|
7832.03476
psi
|
55
MPa
|
7977.07244
psi
|
56
MPa
|
8122.11012
psi
|
57
MPa
|
8267.1478
psi
|
58
MPa
|
8412.18549
psi
|
59
MPa
|
8557.22317
psi
|
60
MPa
|
8702.26085
psi
|
61
MPa
|
8847.29853
psi
|
62
MPa
|
8992.33621
psi
|
63
MPa
|
9137.37389
psi
|
64
MPa
|
9282.41157
psi
|
65
MPa
|
9427.44925
psi
|
66
MPa
|
9572.48693
psi
|
67
MPa
|
9717.52461
psi
|
68
MPa
|
9862.56229
psi
|
69
MPa
|
10007.6
psi
|
70
MPa
|
10152.63765
psi
|
71
MPa
|
10297.67534
psi
|
72
MPa
|
10442.71302
psi
|
73
MPa
|
10587.7507
psi
|
74
MPa
|
10732.78838
psi
|
75
MPa
|
10877.82606
psi
|
76
MPa
|
11022.86374
psi
|
77
MPa
|
11167.90142
psi
|
78
MPa
|
11312.9391
psi
|
79
MPa
|
11457.97678
psi
|
80
MPa
|
11603.01446
psi
|
81
MPa
|
11748.05214
psi
|
82
MPa
|
11893.08982
psi
|
83
MPa
|
12038.1275
psi
|
84
MPa
|
12183.16519
psi
|
85
MPa
|
12328.20287
psi
|
86
MPa
|
12473.24055
psi
|
87
MPa
|
12618.27823
psi
|
88
MPa
|
12763.31591
psi
|
89
MPa
|
12908.35359
psi
|
90
MPa
|
13053.39127
psi
|
91
MPa
|
13198.42895
psi
|
92
MPa
|
13343.46663
psi
|
93
MPa
|
13488.50431
psi
|
94
MPa
|
13633.54199
psi
|
95
MPa
|
13778.57967
psi
|
96
MPa
|
13923.61735
psi
|
97
MPa
|
14068.65504
psi
|
98
MPa
|
14213.69272
psi
|
99
MPa
|
14358.7304
psi
|
100
MPa
|
14503.76808
psi
|
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