Page 1
In the rainbow milk experiment, drops of color suddenly swirl and race across the milk.
在彩虹牛奶实验里，颜色会突然在牛奶表面旋转、扩散，看起来像在跳舞。正文预览
Page 2
The color itself is not what makes the movement happen. The movement comes from what the soap does.
真正让它动起来的，不是颜色本身，而是肥皂带来的变化。
Page 3
Milk contains water, fat, and other substances mixed together.
牛奶里并不只有水，它还混合着脂肪和其他成分。
Page 4
Soap can interact with fat and also change how the surface of the milk behaves.
肥皂会和脂肪发生作用，同时也会改变牛奶表面的状态。
Page 5
When the surface conditions change quickly in one spot, the liquid starts moving, and the colors move with it.
当表面的状态在某个地方突然改变时，液体就会跟着流动，颜色也就一起被带着走。
