Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 7, 2025
But the oval was not perfect; at my right a screen cut it a screen that gleamed with fugitive, fleeting luminescences stretching from the side of our standing place up to the tip of the chamber; slightly convex and crisscrossed by millions of fine lines like those upon a spectroscopic plate, but with this difference that within each line I sensed the presence of multitudes of finer lines, dwindling into infinitude, ultramicroscopic, traced by some instrument compared to whose delicacy our finest tool would be as a crowbar to the needle of a micrometer.
A third method to measure the mountain profile directly by means of the micrometer is evidently applicable only to altitudes lying exactly on the lunar rim." "That is clear enough," said Ardan, "and another point is also very clear. In Full Moon no measurement is possible. When no shadows are made, none can be measured.
"The collimation plate they correct with the micrometer, so that they consider some position-reading of the micrometer-head the zero point, and correct that for the error, which they determine by reflection in a trough of mercury.
"There is no such good fortune in this case, however," he resumed, placing the paper between the two small arms. "But by measurements made by this vernier micrometer caliper I can find the precise thickness of the paper as compared to the other samples." He turned to a microscope and placed the corner of the paper under it.
The art of celestial photography, however, was even then in a purely tentative stage, and Carrington wisely resolved to waste no time on dubious experiments, but employ the means of registration and measurement actually at his command. These were very simple, yet very effective. To the "helioscope" employed by Father Scheiner two centuries and a quarter earlier, a species of micrometer was added.
Now you can see that I only have to lay this on the stage of a microscope, make it an object for a low power, and use a screw micrometer to find how many flagella go to the making of a body. The result is given in the figure; you see that ten flagella would fill the area occupied by the diameter of the body.
Now from possession which is recognized unquestioningly by one's compeers to fancied possession in fee simple is but a step; and from that to the putting up of "No Trespass" signs the interval can be read only on a micrometer scale.
Flashing a minute pencil behind the huge heptagon, Brandon manipulated his tuning circuits until a brilliant spot in space showed him that he was approaching resonance with the heptagon's power beam. Micrometer dials were then engaged and the delicate tuning continued until the meters gave evidence that the two beams were precisely synchronized and exactly opposite in phase.
Ditto per watch 163 58 0 Mr Wales measured the quantity eclipsed by a Hadley's quadrant, a method never before thought of. I am of opinion it answers the purpose of a micrometer to a great degree of certainty, and is a great addition to the use of this most valuable instrument.
The quality of standard makes of cement is, no doubt, much alike, but you wouldn't expect to find that of two different brands identical. My contention is that the blocks were made from the same stuff." Stuyvesant crossed the floor and measured the blocks with a micrometer gage, after which he filled two of the graduated glass measures and then weighed the water.
Word Of The Day
Others Looking