The Pascal, named after the French mathematician and physicist Blaise Pascal, is the SI unit of pressure. It is equivalent to one newton per square meter, symbolized as Pa. Despite its relatively recent introduction in 1971, the Pascal honors the pioneering work of Pascal in fluid mechanics and pressure, such as Pascal’s Law, which explains how pressure applied to a confined fluid is transmitted undiminished in all directions. Interestingly, a single Pascal is a tiny unit of pressure, roughly equal to the pressure exerted by a dollar bill resting flat on a table. This illustrates why everyday atmospheric pressure is typically measured in kilopascals (kPa), as one standard atmosphere is about 101.3 kPa.
The “bar” is a metric unit of pressure, commonly used in meteorology to describe atmospheric pressure — one bar is approximately equal to the atmospheric pressure on Earth at sea level. Interestingly, the term “bar” originates from the Greek word “baros,” meaning weight. This unit is not only practical for forecasting weather but also critical in various scientific fields, such as oceanography and engineering, where accurate pressure measurements are crucial.
A fascinating aspect of the bar is its application in scuba diving. Divers often use bar to read their submersible pressure gauges to monitor air consumption. Moreover, understanding bar pressure changes is essential in deep-sea diving to avoid decompression sickness, a condition caused by rapid changes in pressure. Thus, the bar is a pivotal unit in both scientific and everyday contexts.
Pascals | Bar |
---|---|
0
Pa
|
0
bar
|
1000
Pa
|
0.01
bar
|
2000
Pa
|
0.02
bar
|
3000
Pa
|
0.03
bar
|
4000
Pa
|
0.04
bar
|
5000
Pa
|
0.05
bar
|
6000
Pa
|
0.06
bar
|
7000
Pa
|
0.07
bar
|
8000
Pa
|
0.08
bar
|
9000
Pa
|
0.09
bar
|
10000
Pa
|
0.1
bar
|
11000
Pa
|
0.11
bar
|
12000
Pa
|
0.12
bar
|
13000
Pa
|
0.13
bar
|
14000
Pa
|
0.14
bar
|
15000
Pa
|
0.15
bar
|
16000
Pa
|
0.16
bar
|
17000
Pa
|
0.17
bar
|
18000
Pa
|
0.18
bar
|
19000
Pa
|
0.19
bar
|
20000
Pa
|
0.2
bar
|
21000
Pa
|
0.21
bar
|
22000
Pa
|
0.22
bar
|
23000
Pa
|
0.23
bar
|
24000
Pa
|
0.24
bar
|
25000
Pa
|
0.25
bar
|
26000
Pa
|
0.26
bar
|
27000
Pa
|
0.27
bar
|
28000
Pa
|
0.28
bar
|
29000
Pa
|
0.29
bar
|
30000
Pa
|
0.3
bar
|
31000
Pa
|
0.31
bar
|
32000
Pa
|
0.32
bar
|
33000
Pa
|
0.33
bar
|
34000
Pa
|
0.34
bar
|
35000
Pa
|
0.35
bar
|
36000
Pa
|
0.36
bar
|
37000
Pa
|
0.37
bar
|
38000
Pa
|
0.38
bar
|
39000
Pa
|
0.39
bar
|
40000
Pa
|
0.4
bar
|
41000
Pa
|
0.41
bar
|
42000
Pa
|
0.42
bar
|
43000
Pa
|
0.43
bar
|
44000
Pa
|
0.44
bar
|
45000
Pa
|
0.45
bar
|
46000
Pa
|
0.46
bar
|
47000
Pa
|
0.47
bar
|
48000
Pa
|
0.48
bar
|
49000
Pa
|
0.49
bar
|
50000
Pa
|
0.5
bar
|
51000
Pa
|
0.51
bar
|
52000
Pa
|
0.52
bar
|
53000
Pa
|
0.53
bar
|
54000
Pa
|
0.54
bar
|
55000
Pa
|
0.55
bar
|
56000
Pa
|
0.56
bar
|
57000
Pa
|
0.57
bar
|
58000
Pa
|
0.58
bar
|
59000
Pa
|
0.59
bar
|
60000
Pa
|
0.6
bar
|
61000
Pa
|
0.61
bar
|
62000
Pa
|
0.62
bar
|
63000
Pa
|
0.63
bar
|
64000
Pa
|
0.64
bar
|
65000
Pa
|
0.65
bar
|
66000
Pa
|
0.66
bar
|
67000
Pa
|
0.67
bar
|
68000
Pa
|
0.68
bar
|
69000
Pa
|
0.69
bar
|
70000
Pa
|
0.7
bar
|
71000
Pa
|
0.71
bar
|
72000
Pa
|
0.72
bar
|
73000
Pa
|
0.73
bar
|
74000
Pa
|
0.74
bar
|
75000
Pa
|
0.75
bar
|
76000
Pa
|
0.76
bar
|
77000
Pa
|
0.77
bar
|
78000
Pa
|
0.78
bar
|
79000
Pa
|
0.79
bar
|
80000
Pa
|
0.8
bar
|
81000
Pa
|
0.81
bar
|
82000
Pa
|
0.82
bar
|
83000
Pa
|
0.83
bar
|
84000
Pa
|
0.84
bar
|
85000
Pa
|
0.85
bar
|
86000
Pa
|
0.86
bar
|
87000
Pa
|
0.87
bar
|
88000
Pa
|
0.88
bar
|
89000
Pa
|
0.89
bar
|
90000
Pa
|
0.9
bar
|
91000
Pa
|
0.91
bar
|
92000
Pa
|
0.92
bar
|
93000
Pa
|
0.93
bar
|
94000
Pa
|
0.94
bar
|
95000
Pa
|
0.95
bar
|
96000
Pa
|
0.96
bar
|
97000
Pa
|
0.97
bar
|
98000
Pa
|
0.98
bar
|
99000
Pa
|
0.99
bar
|
100000
Pa
|
1
bar
|
If you like the website, share it on social media.