Scalar quantity is a quantity only tell the size be integrity, but no direction finding results of quantity in Kela. Live after the samples, such as length, scalar energy, time, temperature, pressure, such as the length 2 meters, temperature.C, etc. However, even if the scalar quantity is a quantity that has no direction. But it can be changed in one direction. For example, the temperature tends to increase.The direction of the scalar quantity change the most, that can be obtained from the gradient of the scalar quantity
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