ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY ANIMATED HEALTHCARE LTD / SCIENCE PHOTO LIBRARY
Pressure-temperature gas law. Computer artwork explaining the gas laws as described by the combined gas law equation: PV=kT, which shows the relationship between the pressure (P), volume (V), and temperature (T) for a fixed number of gas molecules (spheres), where k is a constant. Here, the temperature has been reduced using ice (top and left), while the volume of the container (square) is kept constant. Therefore the pressure also decreases. This is because the molecules have less energy at lower temperatures. They therefore move around less and come into contact with the walls of the container less frequently and with less force.
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