Retreat of glaciers since 1850 doing so due to transient local weather conditions, which have brought more precipitation and cloudier, cooler summers since 2002. Tropical glaciers are located between the Tropic of Cancer and the Tropic of Capricorn, in the region that lies 23° 26′ 22″ north or south of the equator. Strictly, a tropical glacier is located within the astronomical tropics; the area where the annual temperature variation is less than the daily variation, and is within the oscillation area of the Intertropical Convergence Zone. Tropical glaciers are the most uncommon of all glaciers for a variety of reasons. Firstly, the regions are the
Degrees of freedom (physics and chemistry) system is the sum of the average energies associated with each of the degrees of freedom: A degree of freedom is quadratic if the energy terms associated with this degree of freedom can be written as where is a linear combination of other quadratic degrees of freedom. example: if and are two degrees of freedom, and is the associated energy: For example, in Newtonian mechanics, the dynamics of a system of quadratic degrees of freedom are controlled by a set of homogeneous linear differential equations with constant coefficients. are quadratic and independent degrees of freedom if the energy associated with