Since longer, low frequency waves actually penetrate deeper than short, high frequency ones, multiple frequencies are often used together and composited into a life-like image.

由于较长的低频波实际上比短的高频波穿透得更深，因此经常将多个频率一起使用并合成为栩栩如生的图像。

As you can see, pink, purple and magenta can only be made using multiple frequencies of light - there is no single frequency of light that's pink - and of course, white light is a mixture as well!

就像大家所能看的的一样，红色、紫色和洋红色只能用不同频率色光混合产生——没有单独粉色光的频率——当然，白光也是混合所产生的的。