Secret Scotland

If it's secret, and in Scotland…

Today is Earth’s Rotation Day

08 January is Earth’s Rotation Day.

If you’re a regular visitor, you might think I just included this day to noise up the ‘Flat Earthers’ – and you’d be right.

Someone recently tried to shame me into not laughing or mocking the Flat Earth Loonies, but that tactic only works when applied to sensible people, not nutjobs who try to spread their dangerous beliefs in contradiction of simple facts.

I can willingly forgive uneducated people who make an honest mistake and assume the Earth is flat because it’s ‘obvious’.

But we’re way past the days when that was acceptable. It’s not as if it’s even credible.

People promoting such things as a Flat Earth really need to be removed from the gene pool.

Consider them the same sort of brainless rubbish that has one lonely brain cell that can grasp the concept of free speech, but has nothing left to understand how that right also comes with the matching concept of responsibility, which would need a second brain cell to keep the first one company.

So…

A mean solar day is based on the year long average, but the basic concept of a solar day itself is the length of time for the earth to complete one full rotation on its axis. Each day varies slightly, hence the need for a mean.

In 1851, French physicist Léon Foucault demonstrated how the earth rotates by suspending a lead-filled brass ball from the top of the Panthéon in Paris. Now known as a Foucault Pendulum, showed that the plane of the swing of the pendulum rotated relative to the Earth’s own rotation. Such pendulums can now be found in many places, and are worth having a look at – unless you’re a Flat Earther (but feel free to offer YOUR explanation of how it works – they say a good laugh is good for the health).

Foucault Pendulum Reveals Earth's Rotation

Foucault Pendulum Reveals Earth’s Rotation

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Jan 8, 2019 - Posted by | Civilian |

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