327
British inches of mercury, if the same (taking that the observations of both thermometers from Blanford's Tables for the reduction of Meteorological Observations out of doors, and not on the same particles as temperature when saturated) are made. If air is uniformly distributed like the oxygen and nitrogen, but occurs in transparency of no consequence. The resulting values of cooling forms, drier and damper air are, then obtained for the purpose of calculating.
1240.2 may be calculated: the first to show the vapour tension, the second to show the relative humidity in percentage of saturation, and the third to show the dewpoint, which is found corresponding to the vapour tension in Blanford Table II.
"The formula derived above from my latest series of observations pretends to far higher accuracy than the tables in current use and the result at which I have arrived, though novel, is not quite unexpected for it has been suspected for some years that meteorologists were using a wrong constant in the hygrometric formula. Only in order to convey a general idea of the observations, not at all because it is otherwise useful, the following table showing values of the constant obtained for every 25° degrees of reading of the wet bulb thermometer and for every 5° of difference between the dry and wet bulb thermometers, is added.
| Wet Bulb Temperature | 5° | 10° | 12° | 15° | 20° |
|---|---|---|---|---|---|
| 25° | .326 .401 .364 | ||||
| 31° | .333 .344 .372 .381 | .396 .314 .337 | |||
| 42° | .359 .339 .347 | ||||
| 45° | .391 .341 .363 .476 .377 .358 .347 .364 | ||||
| 521⁄2° | .328 .388 .373 .359 .371 | .349 .364 .346 .349 .330 .369 | |||
| 50° | |||||
| 571⁄2° | .368 .372 .333 .354 .353 .360 | .576 .304 .350 .368 .335 .335 .408 | |||
| 60° | .413 .352 .365 .349 .360 .363 | .464 .401 .366 .348 .350 .331 .454 | |||
| 625° | |||||
| 65° | .464 .343 .385 .375 .338 .322 .360 .465 .371 .372 | ||||
| 675° | |||||
| 725° | .398 .426 .419 | .246 |
The differences between the figures shown are due to accidental errors, which are harmful but large, and that is owing to the fact...
327
British inches of angrcury, fl the same (taki that the observations of both thermometers from Tabla πck Blanfords Tables for the and corresponding dewpoints are made Jaacluction of Sifateorological Obstructions out of doors, and not on the same particles India") as tanporature II when E-thed. If att uniformly distributed like the oscyam
E-E!=0. bs und inskad of 1130 whim in not wil bulb is covered by ice, but the change and nitrogen, but occurs in transparano of no consequence. The resulting ralus of loudling forms, drier and dampar air are, then drained for the Patituds of Calcul ltimating.
1240.2 may
and Hony now required that thris Fablis
calculated: mi fired to show be, the rapour Pansion, the second to show the relative huml -ity in percentage of saturation, and is this to show ma drwpoint, which is found corr -bonding to me rabour' Finsion in Blanford Tabla IT
"The formula darived above from m latest series of observations pratands to far higher accurday tham the tables in Curing use and ma rasuld at which I hawk arrival though novel, is not quite unexpected for has bam suppacked for some years that
a wrong yi id matqurologists were using a wrong constan in the hygrometric formula. Only in ord to Convry a general idea of the observations not at all because it is otherwise useful the following table showing values of the constant obtained for Every 25° degrass of reading of the wel ball thermometer dr
married 250 for every 23° of difference between the di
250 and wit bulb thermometers, baddad.
was The clifferences between the figures shown cup dur to accidental errors, which are harmill but large, and that is owing to the fact
اتا۔ تا
5° 4° 10° 12° 15° 14° 20° 326 .401.364
31.
.૩૩ ૩.૪ 372 .381 40 -396-314.3371 42's 359 339 347
+
45° .391 341.363 476 377 358.347.364
-328-388.373 359.371 521⁄2-349-364-346.349.330.369
50
་
+
י
576-304-350.368.335"-335.408 571⁄2 368 372 333 354 353.360
·413·352.365 349 360 363 625.464.401.366.348.350-331.454
60
65°
675
TO
725
.464.343.385.375°.338.322 .360.465.371 372
+
་
398 426.419
-246-
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