0 , k > 0 ... Expansion is usually due to heating. Thermal Expansion. The motherboard is the main circuit board of your computer and is also known as the mainboard or logic board. Found inside â Page 237Some contract in one direction while they expand in another , but the total expansion is greater than the total ... Dr. Balfour Stewart has given the following definition in his excellent Treatise on Heat : - " In general language , if we take a quantity ... Found inside â Page 168( a ) Local b , ( Linear Expansion ) ( b ) Local bÄ ( Linear Expansion ) 1 . 2 1 . ... 8 ( c ) Local b , ( Quadratic Expansion ) 0 . ... with some distortions , produced by the parametric definition of the expansion , in the case of the quadratic expansion . A contraction is the act of decreasing the size of something or shortening it, or it can be the process of becoming smaller or compressed. That's not accurate either. Definition of expansion in the Definitions.net dictionary. THERMAL EXPANSION CONCEPT. When a substance absorbs or loses heat energy, the movement of its particles is affected, which causes its volume to change. 1. Scientists learn about their subject by observing, describing, and experimenting. An expansion slot is a socket on the motherboard that is used to insert an expansion card (or circuit board), which provides additional features to a computer such as video, sound, advanced graphics, Ethernet or memory. How can expansion process be used for tightly fixing a metal rim on a wooden wheel? Expand definition, to increase in extent, size, volume, scope, etc. Heat is the transfer of energy from a one object to another due to a difference in temperature. Science of Heat. What is meant by thermal expansion? Expansion in liquids: Expansion in gases. 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