United States or Vanuatu ? Vote for the TOP Country of the Week !
We do not, except in a few instances, flood our lands as you do. Owing to the fact that our atmosphere is much lighter than yours, the normal air pressure being only about 8 pounds to the square inch as against 15 pounds on your Earth, evaporation is very rapid, and the dewfall, as a consequence of much moisture being in the air, is very great.
It may well be that Florentines of past centuries left the hewn blocks in their shady caverns for a certain length of time, as do the Parisians of to-day, in order to allow for the slow discharge and evaporation of liquid; whereas now the material, saturated with moisture, is torn from its damp and cool quarries and set in the blazing sunshine.
By the evaporation of sea water the soil is thus left so salty that no vegetation can grow upon it, and in places beds of salt several feet in thickness have accumulated. Under like conditions salt beds of great thickness have been formed in the past and are now found buried among the deposits of ancient deltas. SUBSIDENCE OF GREAT DELTAS. As a rule great deltas are slowly sinking.
As soon as the rain ceased, it was curious to observe the extraordinary evaporation which commenced over the whole extent of the forest. At the height of a hundred feet the hills were buried in a dense white vapour, which rose like columns of smoke from the most thickly-wooded parts, and especially from the valleys.
It lies 2,200 feet above the sea, and has no visible outlet, but was originally either drained by natural subterranean conduits, or kept within certain extreme limits by evaporation.
Thus, in those ancient times to which we have referred, the sunlight acting on the leaves of plants disturbed the chemical constitution of the atmosphere, gave rise to the accumulation of a more energetic element therein, diminished the mechanical pressure, and changed the rate of evaporation from the sea, a series of events following one another so necessarily that we foresee their order, and, in their turn, making an impression on the vegetable and animal economy.
It will be quite safe, however, to reckon an actual horse power as producible by the evaporation of a cubic foot of water in the hour in the case of engines working without expansion; and for boiling off this quantity in flue or wagon boilers, about 8 lbs. of coal will be required and 9 square feet of flue surface. Q. These proportions appear chiefly to refer to old boilers.
And finally, he who, from the moment the Divine Covenant was born until the end of his life, showed a hatred more unrelenting than that which animated the afore-mentioned adversaries of ‘Abdu’l-Bahá, who plotted more energetically than any one of them against Him, and afflicted his Father’s Faith with a shame more grievous than any which its external enemies had inflicted upon it—such a man, together with the infamous crew of Covenant-breakers whom he had misled and instigated, was condemned to witness, in a growing measure, as had been the case with Mírzá Yaḥyá and his henchmen, the frustration of his evil designs, the evaporation of all his hopes, the exposition of his true motives and the complete extinction of his erstwhile honor and glory.
As the water which comes into the lake cannot be discharged by evaporation, we must suppose some underground outlet, by which it is conveyed, through the limestone, into the Litany. The eastern side of Lebanon drains entirely into this river, which is the only stream whereto it gives birth.
The formation of scale, therefore, is similar to the process of making salt from sea water by evaporation, the boiler being, in fact, a large salt pan. Q. But is the scale soluble in fresh water like the salt in a salt pan? A. No, it is not; or if soluble at all, is only so to a very limited extent.
Word Of The Day