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Updated: June 3, 2025
They packaged samples of organic matter and sent them up to the ship for Carbon-14 dating and analysis; they opened cans and jars and bottles, and found that everything fluid in them had evaporated, through the porosity of glass and metal and plastic if there were no other way. Wherever they looked, they found evidence of activity suddenly suspended and never resumed.
He derived his name from the remarkable transparency of his deformed members to electric light, due to porosity of the bones and deficiency of the overlying tissues. The knees and elbows were completely ankylosed. Infantile spinal paralysis is often the cause of distressing deformities, forbidding locomotion in the ordinary manner.
They are less compact, their density is less, and a thin film of water deposited upon their surface is promptly absorbed, thus indicating a certain amount of porosity. Their fracture is dull and they are striped with shining coal, and can be more easily sliced with a razor.
Those who are familiar with Professor Beers's humour, as expressed in The Ways of Yale, will wish that he had preserved also in this later book some of his whimsicalities, as in the poem A Fish Story, which begins: A whale of great porosity, And small specific gravity, Dived down with much velocity Beneath the sea's concavity.
After this operation it presents the appearance of ordinary sheet lead, but though the physical porosity has disappeared, the chemical porosity is intact, and this alone comes into play in accumulators. When a negative plate is constructed in this manner, it is ready to be combined with the positives to form an accumulator.
When they lose their vitality after being felled and hewn, the fibre retains its stiffness, and the trees as they dry become hollow and frail on account of their porosity, and hence cannot last when used in buildings.
The two appendices whip the viscous secretion of the glands into foam. The lightest portion, whose bubbles are of the greatest tenuity, which is white on account of its finer porosity, rises to the surface, where the caudal filaments sweep it up and gather it into the snowy ribbon which runs along the summit of the nest.
In order to make sure that this was not due to the porosity of the cloth, we constructed two small experimental surfaces of equal size, one of which was air-proofed and the other left in its natural state; but we could detect no difference in their lifting powers.
Castings coated with acid zinc rust comparatively quickly, even when the porosity has been reduced by oxidation, aggravated no doubt by some of the corroding agents sal-ammoniac, for instance being forced into the pores of the metal.
If gravel can be obtained without too much expense, it may be used with excellent results to a depth of from one to three inches, according to the porosity of the subsoil, more being needed where the ground is inclined to become soft.
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