Electromagnetic fields. Be forewarned, this involves science...

It revolves around proving the existence of EMW, and how their presence can be predicted mathematically via some rather complex equations brought to light by "the silver hammer".

It helps to illustrate the effects of EMW on their surroundings. Helps to shed light on why things that measure the same, may not sound the same. Like, cables...

@artemus_5 

Wonder how many movies you have missed out on by abandoning early. From your experience, I gather science only exists in the now, and not in history...

It helps to illustrate the effects of EMW on their surroundings. Helps to shed light on why things that measure the same, may not sound the same. Like, cables...

How does it illustrate why things might measure the same but not sound the same? 

@pekri

How do you get to your conclusion based on the words and context I wrote?
The first part was the history of some science., Not science. And I don’t have time to watch it now.

EMW you say. What pray tell are EMW?

EMW you say. What pray tell are EMW?

I presume ElectroMagnetic Waves.