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The earth is flat

The earth is flat (4)

EXPERIMENTS DEMONSTRATING THE TRUE FORM OF STANDING WATER, AND PROVING THE EARTH TO BE A PLANE.
IF the earth is a globe, and is 25,000 English statute miles in circumference, the surface of all standing water must have a certain degree of convexity–every part must be an arc of a circle. From the summit of any such arc there will exist a curvature or declination of 8 inches in the first statute mile. In the second mile the fall will be 32 inches; in the third mile, 72 inches, or 6 feet, as shown in the following diagram:

The earth is flat (4)
FIG. 1.

Let the distance from T to figure 1 represent 1 mile, and the fall from 1 to A, 8 inches; then the fall from 2 to B will be 32 inches, and from 3 to C, 72 inches. In every mile after the first, the curvature downwards from the point T increases as the square of the distance multiplied by 8 inches. The rule, however, requires to be modified after the first thousand miles.

(Any work on geometry or geodesy will furnish proofs of this declination.)

The following table will show at a glance the amount of curvature, in round numbers, in different distances up to 100 miles.

Curvature

in

1

statute

mile

8

inches.

2

32

3

6

feet.

4

10

5

16

6

24

7

32

8

42

9

54

10

66

20

266

30

600

40

1066

50

1666

60

2400

70

3266

80

4266

90

5400

100

6666

120

9600

(To find the curvature in any number of miles not given in the table, simply square the number, multiply that by 8, and divide by 12. The quotient is the curvation required.)

It will be seen by this table that after the first few miles the curvature would be so great that no difficulty could exist in detecting either its actual existence or its proportion. Experiments made on the sea shore have been objected to on account of the constantly changing altitude of the surface of the water, and of the existence of banks and channels which produce a “crowding” of the waters, as well as currents and other irregularities. Standing water has therefore been selected, and many important experiments have been made, the most simple of which are the following:–

In the county of Cambridge there is an artificial river or canal, called the “Old Bedford.” It is upwards of twenty miles in length, and passes in a straight line through that part of the Fens called the “Bedford Level.” The water is nearly stationary–often completely so, and throughout its entire length has no interruption from locks or water-gates of any kind; so that it is, in every respect, well adapted for ascertaining whether any or what amount of convexity really exists.

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The earth is flat

The earth is flat (6)

Along the edge of the water, in the same canal, six flags were placed, one …

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