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Here we will learn
to distinguish

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between vectors and scalars.

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Vectors are objects that
have both a magnitude,

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a single number,
and a direction.

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Whereas scalars have
only a magnitude.

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Let's see some examples of each.

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The length of
something is a scalar

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because it's just the magnitude.

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A force exerted by
someone pulling something

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is a vector because we
care about the strength

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of the force, the
magnitude, and the direction

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in which the force is acting.

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Temperature-- it's a scalar.

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If we display temperature
on a weather map

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where the value
of the temperature

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is different at each point in
space, this is a scalar field.

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In comparison, this
weather map of wind

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where the value of the wind
velocity at each point in space

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is represented by a
vector is a vector field.