You can't make visual effects without vectors and matrices.

没有量和矩阵就无法制作视觉效果。

If it's perpendicular to the plane, it's also perpendicular to this vector right over here.

既然它会垂直於斜面他也会垂直於平行分力，来推算出橘色量和黄色量量值。

Coming down on that vector, you get that... that buckling this way.

沿着那量，你会看到......样弯曲。

And if you want the whole vector, it's in this direction.

如果以量表示，它是指。

This is what's called a context vector, and it's something pretty special.

就是所谓上下文量，它很特别。

Sine of 30 degrees. Sine of 30 degrees.

sin 30 度。是因为量。

And this comes straight out of this magnitude, which is opposite to the angle over the hypotenuse.

是因为量，让它量值当分母。

And there's also vectors, it doesn't matter how much you zoom, it's still perfect, it's still a line.

还有量，不管你放大多少，它仍然是完美，它仍然是一条直线。

It's not too hard to see that all those possible normal vectors trace out the surface of a sphere.

不难看出，所有些可能 法线量都在球体表面上。

So the magnitude here is 98 newtons and it is pointing downwards.

所以量值是98牛顿，而则是下现在我们要做就是将此重力量分解成垂直於斜面表面正力与平行於斜面表面平行分力。

For each language Google Translate supports, every word gets converted into a vector, which is written like a list of numbers.

对于谷歌翻译支持每种语言，每单词都被转换成一量，量被写成一串数字。

These are the ones which leave all the basis vectors perpendicular to each other with unit lengths.

些是使所有基量彼此垂直并具有单位长度量。

And we can use that information to figure out the magnitude of this orange vector right over here.

我们可以用以上些资讯求到橘色量量值记住，橘色量是地球引力垂直於斜面表面分力。

" R" divided by the length of " R" .

用量R除以它模。

And now let's  begin the unit 1 review in earnest with vectors and scalars.

现在让我们从量和标量开始认真复习第一单元。

Vector is a fancy way of saying list.

量是一种表示列表奇特式。

The straight arrow connecting the two points is the vector from the origin to B.

连接两点直箭头是从原点到 B 量。

That would be your total vector.

那将是你总量。

And what are vectors? Scalars? And what does this mean?

什么是量？标量？是什么意思？

They tend to get bigger since most vectors are getting stretched.

由于大多数量都被拉伸，它们往往会变得更大。