The Importance Of Physics In The World
To understand why physics went wrong and what all the fuss is …show more content…
I was ready to sacrifice any of my previous convictions about physics.” Why was Planck so upset?
We’re going to leave an upset Planck temporarily to look at analogies. The next ‘extra for experts’ section uses one and we just want to get in a warning about them.
An analogy is a description in terms of everyday things that you already know about. We are going to compare light waves to the waves in water. This is obviously not the way it really is, but it gives us a handle for our imagination to hang on to. Physicists do this all the time, it’s just that their analogies are more complex, and more explanatory than entertaining.
Warning: While analogies can be very helpful, they can also be dangerous if we do not understand that they are not the real thing! Analogies can break down and it might not be obvious that they have done so. They might lead to interpreting an experiment in the wrong way, for instance, so that the truth is not seen for what it is. We will see a lot of this. So analogies should come with a disclaimer: