Scalar quantity Size is the amount that can tell just by the way it's understandable. Do not need to give directions to. The dollar amount of memory, for example, long distance, time, mass, pressure, speed, temperature, etc., such as steel rods, one at 18:00 am 2 meters long, the water temperature at 50 degrees Celsius of the foregoing, we find that the car not tell. I understand that size is not a direction. If we say that direction To make the message of the original and unusual is not popular to say, if we said at 18:00 am on the right to make a strange error message, and the quantity.
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