My 4 year old asked me and I think it’s a rather good question that I would like to answer so she understands. Thanks 🙏🏻
In: 1926
If you tie a rope to a pole and move your arm up and down while holding the other end, you’ll see a wave form in the rope. The faster you move your arm, the closer the hills and valleys in the wave will be.
Light does the same thing, but at a much smaller size. More specifically, different colors of light “wave” at different speeds.
The faster it waves, which we see as color, the more energy the light has. Red light waves the slowest, blue light waves the fastest. Any slower or faster, and we can’t see it.
The reason some things, like water, are transparent is because materials only reflect certain energy levels (colors) of light. We can only see light that enters our eyes, and since most visible light passes through water, we see through it with few problems.
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