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The Great Pyramid of Giza and the Speed of Light(johndcook.com)
15 points by rolph 10 hours ago | 8 comments
nasretdinov 7 hours ago | parent | next [-]

It's just that the French left the greastet Easter Egg of all time when creating the Metric System. They could've just made speed of light some round number, e.g. 1 million km/sec, but that sounded too bland, so they chose the Great Pyramid of Giza instead. The same for the charge of the electron

mmooss 2 hours ago | parent [-]

If you make that number round, others become not-round.

I read [0] that the meter was defined as 1 / 10,000,000th of the distance from the equator to the (north?) pole. The measurement on which that was based was wrong and the actual distance is 10,001,966 meters. If you make that distance round, then the speed of light will almost certainly not be round (now that would be a coincidence!).

But also 1 cm^3 = 1 ml. Perhaps the ml was based on the cm^3. That's practical.

Making a round number for the speed of light or for the distance from equator to pole is practical only for geographers or physicists. What would be most practical to ordinary people as the basis for a meter? A body part (is there a particularly standard body part, with minimal correlation with body size/mass)?

[0] I haven't seen an especially reliable source

m3047 5 hours ago | parent | prev | next [-]

"Of course it's a coincidence" doesn't leave me with good feels. See, we don't know what a "normal distribution" is for a correlation like this, it's not like we have a huge bag of samples to determine the variance from.

JohnnyLarue 4 hours ago | parent | prev | next [-]

The pyramid exists on every latitude between 29.9782000 and 29.9801000, it's not that precise.

elashri 5 hours ago | parent | prev [-]

The conspiracy theorist inside me would say that the French might not be the first to define the metric this way /s.

krapp 5 hours ago | parent [-]

You're reminding me of a miniminuteman video debunking this conspiracy theory, asking how it was that the aliens who built the pyramids were using the metric system.

I guess it's literally everyone in the galaxy except for Americans using the metric system.

elashri 5 hours ago | parent [-]

> I guess it's literally everyone in the galaxy except for Americans using the metric system.

So the reason the aliens always start their invasion or encounter with humans from America in Hollywood movies is because they are angry/curious to see the only people in the galaxy not using the metric system?

krapp 5 hours ago | parent [-]

They hate us for our freedoms!