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tech / sci.astro.amateur / Could they also calculate earth's curvature?

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* Could they also calculate earth's curvature?StarDust
`* Re: Could they also calculate earth's curvature?StarDust
 `- Re: Could they also calculate earth's curvature?kellehe...@gmail.com

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Could they also calculate earth's curvature?

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Subject: Could they also calculate earth's curvature?
From: csok...@gmail.com (StarDust)
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 by: StarDust - Mon, 12 Sep 2022 06:22 UTC

https://youtube.com/shorts/T0f6u39jlRA?feature=share

Re: Could they also calculate earth's curvature?

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Subject: Re: Could they also calculate earth's curvature?
From: csok...@gmail.com (StarDust)
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 by: StarDust - Mon, 12 Sep 2022 07:34 UTC

On Sunday, September 11, 2022 at 11:22:13 PM UTC-7, StarDust wrote:
> https://youtube.com/shorts/T0f6u39jlRA?feature=share

Here we go!
https://www.abc.net.au/news/2021-09-05/eratosthenes-measured-circumference-of-the-earth-2200-years-ago/100434560

Re: Could they also calculate earth's curvature?

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Subject: Re: Could they also calculate earth's curvature?
From: kelleher...@gmail.com (kellehe...@gmail.com)
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 by: kellehe...@gmail.com - Mon, 12 Sep 2022 08:45 UTC

On Monday, September 12, 2022 at 8:34:21 AM UTC+1, StarDust wrote:
> On Sunday, September 11, 2022 at 11:22:13 PM UTC-7, StarDust wrote:
> > https://youtube.com/shorts/T0f6u39jlRA?feature=share
>
> Here we go!
> https://www.abc.net.au/news/2021-09-05/eratosthenes-measured-circumference-of-the-earth-2200-years-ago/100434560

Americans get their history from the late 17th century Royal Society ' enlightenment' subculture and these people don't do imperial kings and queens, they have empirical icons instead. It is why the English here would have little to say about the death of the Queen as they never cared for the monarchy anyway and the American academic groupies maintained all the worse traits of English academic society in trying to model themselves on the Greek academia.

" I have duly received your favour of the 5th. inst. with respect to the busts & pictures I will put off till my return from America all of them except Bacon, Locke and Newton, whose pictures I will trouble you to have copied for me: and as I consider them as the three greatest men that have ever lived, without any exception, and as having laid the foundations of those superstructures which have been raised in the Physical & Moral sciences " Thomas Jefferson

https://www.loc.gov/exhibits/jefferson/18.html

It is why, although the watchmaker John Harrison had the support of George III, it took an act of Parliament to secure the prize of linking clocks to longitude at a rate of 15 degrees per hour and once in 24 hours.

It is one thing to know the ancient recognition that the Earth is round, that was known in remote antiquity to those who deal with these issues, it is something else to understand what the rotational velocity is. The 17th century RA/Dec modellers got it wrong and it will always be wrong.

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