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Updated: June 15, 2025
Thus the diffusivity of common salt through water was found by Fick to be as small as 0.0000112 square centimeter per second; nearly 200 times as great as this is the diffusivity of heat through water, which was found by J.T. Bottomley to be about 0.002 square centimeter per second.
Now, my gallant Ned, do you know how many square centimeters you have on your bodily surface?" "I haven't the foggiest notion, Professor Aronnax." "About 17,000." "As many as that?" "Yes, and since the atmosphere's pressure actually weighs slightly more than one kilogram per square centimeter, your 17,000 square centimeters are tolerating 17,568 kilograms at this very moment."
In the case of the pink cubes the edge increases according to the numerical series, i.e., the first cube has an edge of one centimeter, the second of two centimeters, the third of three centimeters, and so on, to the tenth cube, which has an edge of ten centimeters.
A cubic centimeter contains about twenty-five drops. In other words, they allow 20,000 bacteria per drop. This may seem very lively milk, but these bacteria are so small that about 25,000 of them laid end to end measure only about an inch, and it would take 17,000,000,000,000 of them to weigh an ounce, according to estimates.
These are the questions which observation will answer. A little in advance of the proper season, I transfer each family into a short glass tube, which will represent the natal cell. A good, thick cork, quite a centimeter deep, is the obstacle to be pierced for an outlet.
"After watching for some considerable time the panorama of destruction that lay unrolled all around me, I came down from my post of observation on the cathedral roof, and at the very moment I reached the street a 28- centimeter shell struck a confectioner's shop between the Place Verte and the Place de Meir.
The ratio of the apertures that give the same results at the optical center or behind the objective is as that of the diaphragm employed to that of the back lens. If the diaphragm is one centimeter and the lenses four centimeters, an aperture of one centimeter in one case and of four in the other will give the same result.
"Can't you hear 'em?" he asked tiptoeing rapidly up to Virginia. "It's them big guns, over in Europe. It's them forty-two centimeter howitzers and the French seventy-fives in the trenches along the Somme." "Do you think so?" murmured Virginia, smoothing down her cat's back, "it sounds like blasting to me."
If too much chameleon has been added, one may titrate back with an accurately estimated solution of manganese, which is prepared most easily by evaporating fifteen cubic centimeters chameleon solution down to two or three cubic centimeters, boiling with two to three cubic centimeters hydrochloric acid so long as the smell of chlorine is observed, and then diluting the solution to ten cubic centimeters, when one cubic centimeter of it corresponds to the same measure of chameleon.
From the final data, plot the corrections to be applied so that they may be easily read for each cubic centimeter throughout the burette. The total correction at each 10 cc. may also be written on the burette with a diamond, or etching ink, for permanence of record. This slowly unites with the main body of liquid, but requires an appreciable time.
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