Pro-Human Extremist

Extremism in the defense of humanity is no vice

Archive for December 2011

How well do you understand the physical world?

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Some time ago, I realized that I had never really wondered about the physical causes of many little things that were happening around me. We all live in a physical universe, and yet most of us take its operations for granted. We may have the comfortable conviction that there’s a scientific explanation for everything we see, and so we may consider ourselves rationalists. But if we don’t ourselves know the explanations for many of the events of our daily lives, then practically speaking it’s like we are surrounded by magic and mystery.

Over the years, I’ve assembled a list of some strikingly common and obvious phenomena whose causes most people don’t actually know—not because they’re unable to understand, because the explanations are usually not so very complex, but merely because they’ve never bothered to ask.

Here are a dozen of my favorites. How many of them can you yourself explain? I used to make the mistake of cheerfully confronting friends and acquaintances with these questions, but I stopped because I found it usually annoyed the hell out of them. Even though my point was that I had myself spent most of my life blissfully ignorant of the explanations for some of these phenomena, bringing them up in conversation inevitably gave me a know-it-all air, I think. Hopefully blogging about them won’t have the same effect.

1)               Why is the sky blue (and why do clouds look red and yellow at sunset)?

2)               Why does the sun emit light?

3)               Why do things look black and white in moonlight?

4)               Why does water put out fires?

5)               Why do wool and down keep you so warm?

6)               Why is it colder in winter and warmer in summer?

7)               Why does lightning produce the sound we call thunder?

8)               Why do sharp knives cut better than dull ones?

9)               Why does a magnifying glass make things look bigger?

10)          What causes rainbows?

11)          Why can’t you see through milk but you can see through water and vegetable oil?

12)          Why does really hot water make glass crack (and why doesn’t Pyrex crack)?

© Joel Benington, 2011.

Written by Joel Benington

December 4, 2011 at 8:36 pm