pressure: Influences on and Effects of Pressure

Different gas laws relate the pressure of a gas to its volume, its temperature, or both. A rise in pressure affects both the melting point and the boiling point of a substance, raising the melting and boiling points of most substances. In the case of water, however, an increase in pressure lowers its melting point so that the pressure of a skate blade on an ice surface causes the ice below it to be converted to the liquid state (see states of matter; expansion). Bernoulli's principle relates the effect of the velocity of a fluid on the pressure within the fluid.

Sections in this article:

• Introduction
• Tools for Measuring Pressure
• Hydraulic Force
• Buoyancy
• Influences on and Effects of Pressure
• Pressure of Fluids

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