Linear expansion means change in one dimension (length) as opposed to change in volume (volumetric expansion). To a first approximation, the change in length measurements of an object due to thermal expansion is related to temperature change by a "linear expansion coefficient".
Solids mostly expand in response to heating and contract on cooling. This response to temperature change is expressed as its coefficient of thermal expansion.. The coefficient of thermal expansion is used:
coefficient of thermal expansion . for various materials . at different temperatures . technical report tr-18 (rev. f)
CONCEPT. Most materials are subject to thermal expansion: a tendency to expand when heated, and to contract when cooled. For this reason, bridges are built with metal expansion joints, so that they can expand and contract without causing faults in the overall structure of the bridge.
The change in temperature in the expansion equations can be given in either degrees Celsius or Kelvins. A sample table showing coefficients of thermal expansion for selected materials is given below.
Related Topics . Temperature Expansion - Thermal expansion of pipes and tubes - stainless steel, carbon steel, copper, plastics and more; Piping Systems - Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams
Thermal Expansion is when an object begins to expand as the temperature around it increases. As an object is heated, the molecules begin to move rapidly and expand outward.
Thermal Conductivity - k - is the quantity of heat transmitted due to an unit temperature gradient, in unit time under steady conditions in a direction normal to a surface of the unit area.
TETechnology designs and manufactures the highest quality thermoelectric coolers, cold plates, liquid coolers, and thermoelectric coolers.
This document was prepared for the middle school math teachers who are taking part in Project Skymath. It is also hoped that the general public will find it interesting.