Scalar
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Scalar".

A scalar is a variable that only has magnitude, e.g. a speed of 40 km/h. Compare it with vector, a quantity comprising both magnitude and direction, e.g. a velocity of 40km/h north.

Look up scalar in Wiktionary, the free dictionary.

• Scalar (mathematics), a quantity which is independent of viewpoint, a non-tensor
• Scalar (physics), the same as the notion of scalar in differential geometry
• Scalar (computing), an atomic quantity that can hold only one value at a time

See also

• Scalar field
• Scalar multiplication
• Inner product space
• Scalar product, also known as the dot product
• Pseudoscalar
• Scalar processor
• Pterophyllum scalare (Lichtenstein, 1823), a species of freshwater angelfish

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