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I worked for decades as a broadcast engineer. The formulas we use to determine the coverage of radio stations work perfectly, and are based on (among other things) the sphericity of the Earth. If the Earth were flat, FM stations from Tasmania could be heard routinely and clearly in the Hollywood hills.

We've known about the sphericity of the Earth since Eratosthenes' intelligent experiments 2200 years ago. When the Christians burned the great libraries and philosophic schools, they imposed vulgar Semitic fables on us, such as the "flat Earth." The rediscovery of European science and natural philosophy in the Renaissance got people thinking again, with Columbus's and Magellan's great voyages among the results.

Every single radio station in the world, and there are tens of thousands of them, proves that the Earth is a sphere -- as does even the most basic understanding of our intellectual heritage.

Condor 6mo ago

I should admit, when you work with waves, resonance, propagation of waves, you learn so much about so many aspects of physics. I often find myself using wave knowledge to interpret fields of physics that usually are not considered connected with electromagnetic waves.

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Discussion

Kevin Alfred Strom 6mo ago

There are still many mysteries at the edges of our knowledge, as for example in the behavior of light, which can be explained as either particles or waves, without either seeming completely satisfactory. We are bumping up against the underlying structure of reality, and against the limits of our ability to know. It gives a feeling of awe.

Bill Cypher 6mo ago

Not really a mystery, just poorly explained to most people.

Look up the Eliezer Yudkowsky explanation for quantum theory on Less Wrong. Not a particle, not a wave, no more observer paradox.

Kevin Alfred Strom 6mo ago

Thank you!