scalar
意味: A quantity that has magnitude only, without any associated direction. Examples include temperature, mass, and speed.
Scalars are contrasted with vectors, which possess both magnitude and direction. In linear algebra, a scalar is simply a real or complex number used to multiply a vector or matrix. In computing, a scalar variable holds a single value as opposed to an array or list. The term is almost exclusively confined to scientific and technical discourse and collocates with 'quantity,' 'field,' 'multiplication,' and 'product.'
例文
- Temperature is a scalar quantity because it has magnitude but no direction. 温度是标量,因为它只有大小而没有方向。La temperatura es una magnitud escalar porque tiene módulo pero no dirección.温度はスカラー量です。大きさはありますが方向はありません。온도는 크기는 있지만 방향이 없기 때문에 스칼라량입니다.
- Multiplying a vector by a scalar changes its magnitude without altering its direction. 将向量乘以标量会改变其大小,但不会改变其方向。Multiplicar un vector por un escalar cambia su módulo sin alterar su dirección.ベクトルにスカラーを掛けると、方向は変えずに大きさだけが変わります。벡터에 스칼라를 곱하면 방향은 변하지 않고 크기만 변합니다.
- The scalar product of two vectors yields a single number rather than another vector. 两个向量的标量积(点积)得到的是一个数而非另一个向量。El producto escalar de dos vectores da como resultado un único número en lugar de otro vector.二つのベクトルのスカラー積(内積)は、別のベクトルではなく一つの数値を与えます。두 벡터의 스칼라곱(내적)은 또 다른 벡터가 아닌 하나의 숫자를 산출합니다.
発音
使い方ガイド
場面: academic, scientific
トーン: neutral
起源と歴史
From Latin scalaris (of or relating to a ladder), from scala (ladder, staircase), referring to the idea of a graduated scale of values. Adopted into mathematical English in the mid-19th century.
文化的背景
Era: Modern
Generation: All ages
Social background: Universal
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