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

没有向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.

既然会垂直於斜面他也会垂直於这个平行分力，来推算出这个橘色的向和黄色的向的值。

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

沿着那个向，你会看到......这样的弯。

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

如果以向表示，是指向这个向的。

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

这就是所谓的上下文向，特别。

Sine of 30 degrees. Sine of 30 degrees.

sin 30 度。这是因为这个向。

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

这是因为这个向，让的值当分母。

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

还有向，不管你放大多少，仍然是完美的，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，所有这些能的 法线向都在球体表面上。

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

所以向的值是98牛顿，而向则是向下现在我们要做的就是将此重力向分解成垂直於斜面表面的正向力与平行於斜面表面的平行分力。

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

对于谷歌翻译支持的每种语言，每个单词都被转换成一个向，这个向被写成一串数字。

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

这些是使所有基向彼此垂直并具有单位长度的向。

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

我们以用以上的这些资讯求到这个橘色的向的值记住，这个橘色的向是地球引力垂直於斜面表面的分力。

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

用向R除以的模。

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

现在让我们从向和标开始认真复习第一单元。

Vector is a fancy way of saying list.

向是一种表示列表的奇特式。

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

连接两点的直箭头是从原点到 B 的向。

That would be your total vector.

那将是你的总向。

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

什么是向？标？这是什么意思？

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

由于大多数向都被拉伸，们往往会变得更大。