Page images
PDF
EPUB

TABLE XVI.

CORRECTIONS FOR CURVATURE AND REFRACTION,

Shewing the difference of the Apparent and True Level in Feet, and Decimal parts of

Feet, for Distances in Feet, Chains, and Miles.

[blocks in formation]

.00009 .00056

100.00024.00004.00020 1.0.00010 .00001.00009 150.00054.00008 .00046 1.5 .00024 .00003.00021 200.00096 .00013.00083 2.0 .00042 .00006.00036 250 .00149.00021 .00128 2.5 .00065.000 300.00215.00031 .00184 3.0 .00094 .00013 .0008 350.00293.00042.00251 3.5 .00128 .00018.00110 400.00383.00055.00328 4.0 .00167 .00024 .00143 450.00484.00069 .00415 4.5.00211 .00030.00181 500 .00598.00085 .00513 5.0 .00261 .00037.00224 550.00724 .00103 .00621 5.5 .00315.00045.00270 600.00861 .00123 .00738 6.0.00375.00054 .00321 650 .01010 .00144.00866 6.5 .00440 .00063 .00377 700 .01172 .00167 .01005 7.0 .00511 .00073.00438 750.01345 .00192 .01153 7.5 .00586.00084.00502 800.01531.00219 .01312 8.0 .00667.00095.00572 850.01728.00247 .01481 8.5 .00753 .00108.00645 900 .01938.00277 .01661 9.0 .00844 .00121 .00723 950 .02159 .00308.01851 9.5 .00940 .00134.00806 1000 .02392 .00333 .02059 10.0 .01042 .00149.00893 1050 .02638.00377 .02261 10.5.01149 .00164 .00985 1100 .02895.00414 .02481 11.0 .01261 .00180.01081

[blocks in formation]

3

8.1708

1.1673

7.0035

4 10.6720

1.5246 9.1474

4 13.5468 1.9295 11.5773

5 16.6750
5 20.1769

2.8824 17.2945

6 24.0120
6 28.1809

3.4303

20.5817

4 0258 24.1551

7 32.6830

4.6690 28.0143

7 37.5190

5.3599 32.1591

8 42.6880

6.0997 36.5883

8 48.1910

6.8844 41.3066

9 54.0270

7.7181 46.3089

9 60.1971

8.5996 51.5975

2.3821 14.2929

1150 .03164.00452 .02712 11.5 .01378 .00197 .01181 10 66.7000 9.5286 57.1714 1200 .03445 .00492 .02953 12.0.01501 .00214 .01287 11 80.7070 11.5296 69.1774 1250 103738 .00534 .03204 12.5 .01628 .00233.01395 12 96.0480 13.7211 82.3269 1300 .04043 .00578.03465 13.0 .01761 .00252.01509 13 112.7230 16.1033 96.6197 1350 .04361.00623.03738 13.5 .01899 .00271.01628 14 130.7320 18.6760 112.0560 1400 .04689.00670 .04019 14.0.02043 .00292.01751 15 150.0750 1450 .05030.00719.04311 14.5 .02191 .00313.01878 16 170.7520 1500 .05383.00769 .04614 15.0.02345 .00335.02010 17 192.7630 1550.05748.00821 .04927 15.5 .02504 .00358.02146 18 216.1086 1600 .06125 .00875 .05250 16.0 .02668 .00381 .02287 19 240.7870 1650 .06514 .00931.05583 16.5 .02837 .00405 .02432 20 266.8000 1700 .06914 .00988.05926 17.0 .03012 .00430 .02582

1750 .07327 .01047 .06280 17.5 .03192 .00456 .02736 1800 .07752 .01107 .06645 18.0.03377.00482.02895 1850 08188 .01170.07018 18.5 .03567 .00509 .03058 1900 .08637 .01234.07403 19.0.03762.00537.03225 1950 .09098.01300 .07798 19.5 .03963 .00566.03397 2000 .09570.01367 .08203 20.0.04169 .00596 .03573

21.4393 128.6357 24.3931 146.3589 27.5376 165.2254 30.8727 185.2359 34.3981 206.3889 38.1143 228.6857 3 38

TABLE XVII.

REDUCTION IN LINKS AND DECIMALS UPON EACH CHAIN'S LENGTH

FOR THE FOLLOWING VERTICAL ANGLES.

[blocks in formation]

To one

[blocks in formation]

Angle. Perpen- Angle. Perpen- Angle. Perpen- Angle. Perpen

dicular.

dicular.

dicular.

dicular.

[blocks in formation]

17

7 36

[blocks in formation]

TABLE XIX.

COMPARATIVE SCALE OF FARENHEIT'S, REAUMUR'S, AND THE CENTESIMAL THERMOMETERS. Far. Reau. Cent. Far. Reau. Cent. Far. Reau. Cent. Far. Reau. Cent.

[blocks in formation]

The following formula will serve for the comparison of these Thermometers.

[blocks in formation]

The Logarithms answering to every degree of the graduations of the above Thermometers will be found at p. 296, vol. i. of Dr. Pearson's "Practical Astronomy."

[blocks in formation]
[ocr errors][ocr errors][ocr errors][ocr errors][ocr errors]
« PreviousContinue »