High pressure in science and engineering is studying the effects of high pressure on materials and the design and construction of devices, such as a diamond anvil cell, which can create high pressure. By high pressure it is usually meant pressures of thousands or millions (megabars) of times atmospheric pressure (about 1 bar or 100,000 Pa). Percy Williams Bridgman received a Nobel prize for advancing this area of physics by several magnitudes of pressure (400 MPa to 40,000 MPa).