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Updated: June 16, 2025
Her weapon entered a little to one side, not quite a millimetre from the central point and still, of course, on the line of demarcation between the first two thoracic segments. I at once laid hold of the precious specimen, which was to teach me curious matters about the effects of an ill-delivered stroke.
By means of a magnifying glass, a screen covered with sulphide of zinc is kept under observation, and in front of it is disposed, at a distance of about half a millimetre, a fragment of some salt of radium. We then perceive multitudes of brilliant points on the screen, which appear and at once disappear, producing a scintillating effect.
Do not let us forget the Philanthus, who takes no account either of the fissures beneath the abdominal plates or of the wide hiatus behind the corselet, but plunges her weapon, at the base of the throat, through a gap of a fraction of a millimetre. Let us just mention the Mantis-hunting Tachytes.
The crowd was now swelled to a considerable size; it blocked up the pavement, and was swelled every moment by the arrival of the curious. The little fat elderly man put his fingers exactly where the other's had been, effecting the exchange with a sharp gesture; and each watched intently to see that it was right to within a millimetre. The attitude was constrained.
'What though I have never been here until this second? cried Longstreet triumphantly. 'I know it, all of it, every inch and millimetre of it! I could have made a map of it and laid the colours in. I have read of it, studied it I have written of this country! Having been right in everything else, am I to be mistaken in the matter of its minerals? I said give me three months to find gold!
Now Mr Stoney has pointed out that the numerical results of experiments on gases render it probable that the mean distance of their particles at the ordinary temperature and pressure is a quantity of the same order of magnitude as a millionth of a millimetre, and Sir William Thomson has since shewn, by several independent lines of argument, drawn from phenomena so different in themselves as the electrification of metals by contact, the tension of soap-bubbles, and the friction of air, that in ordinary solids and liquids the average distance between contiguous molecules is less than the hundred-millionth, and greater than the two-thousand-millionth of a centimetre.
Various physicists, among them M. Houllevigue, have studied this phenomenon, and in the case of pressures between 1/20 and 1/100 of a millimetre, the last-named scholar has obtained mirrors of most metals, a phenomenon he designates by the name of ionoplasty.
The science in each course in those days could have been acquired just as well in a fortnight as in half a year. One muddled away three or four days etching a millimetre scale with hydrofluoric acid on glass to no earthly end that I could discover and a week or so in making a needless barometer.
The long segments of the commoner kind attain a length of from 10 to 30 and even 45 thousandths of a millimetre. On June 28th, fermentation was quite finished; there was no longer any trace of gas, nor any lactate in solution. All the infusoria were lying motionless at the bottom of the flask. The liquid clarified by degrees, and in the course of a few days became quite bright.
Professor Langley now got heating effects from rays of above twice that wave-length, his delicate thread of platinum groping its way down nearly to thirty ten-thousandths of a millimetre, or three "microns." The known extent of the solar spectrum was thus at once more than doubled.
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