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Messages - Seemom

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Flat Earth Theory / Re: I think you're wrong. Discuss if you dare
« on: February 17, 2020, 07:41:25 PM »
Quote from: Storm on February 15, 2020, 04:15:05 PM

Did you know that Nikola Tesla believed in the Flat Earth?

Of all the absurd claims I have read on this site, that is one of the worst.  It is also the most easily disproven.

"To give you an idea, I have prepared a diagram illustrating an analogue which will clearly show how the current passes through the globe"

Just count how many times Tesla refers to a "globe" earth.

Flat Earth Theory / Re: I think you're wrong. Discuss if you dare
« on: February 13, 2020, 06:14:38 PM »
AND... how could they possibly look exactly the same, no matter where you are on the Earth, when you consider all of the movements of the Earth and all bodies in space??

The stars are in constant motion.  A star's motions through space relative to the Sun is called Proper Motion and was first noted by Edmund Halley in 1718 for three bright stars: Sirius, Aldebaran, and Arcturus, by comparing his measurements of their positions to those of Hipparchus of Rhodes (300BC). In all, it took 2000 years for the motions to build up to the point that they became measurable.  The largest proper motion recorded is Barnard's Star at 10.25 arcsec/yr. Typical proper motion is ~0.1 arcsec/year, which means after 1 year, star has moved 0.1 arcsec,  10 years, star has moved 0.1x10 = 1 arcsec and after 100 years, the star has moved 0.1x100 = 10 arcsec.

Since the smallest angle the eye can discern is a few arcminutes (1 arcmin = 60 arcsec), it can take many thousands of years for the constellations to noticeably change shape.

That's how.

Flat Earth Theory / Re: I think you're wrong. Discuss if you dare
« on: February 13, 2020, 02:36:04 PM »
If you were on a sphere, the horizon line would appear to drop, or appear lower in YOUR view, as your altitude increased.

You mean kind of like how it drops in this video? These measurements were take at Williams Reset by The Maine Surveyor, a professional geodetic surveyor. The method used was developed by Al Biruni hundreds of years ago to determine the radius of the earth by measuring the angular drop to the horizon and is still in use today.

Coordinates: 43° 37′ 26.52402″ N, 070° 12′ 37.43712″ W

Elevation: 21.986 meters

Note that there are two views, one at 90 degrees, one at 270 degrees.  These two measurements are to negate the effect of any collimation errors.  The final image has field notes and calculations from The Maine Surveyor.  A total of 20 measurements were taken, 10 for each face of the theodolite.  By averaging equal numbers of measurements from each face collimation errors are eliminated. The measured drop is 7′ 39″ with a standard deviation of +/- 3 arcseconds.

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