The following are the approximate wave-lengths of the most brilliant lines: When the discharge passes through helium at a pressure of several millimetres, the yellow line 5876 is prominent.
The human flea is considerably exceeded in size by certain other species found upon much smaller hosts; thus the European Hystrichopsylla talpae, a parasite of the mole, shrew and other small mammals, attains a length of 5z millimetres; another large species infests the Indian porcupine.
The armament included 394 guns of all calibres, 6 of which were of 250 millimetres, 4 of 240, and 12 of 200.
In conjunction with the above receiver he employed a transmitter, which consisted of a large induction or spark coil S having its spark balls placed a few millimetres apart; one of these balls was connected to an earth FIG.
The New York-Chicago line, built in 1892, is of wire 165 millimetres in diameter (No.
Gobius alcocki, from brackish and fresh waters of Lower Bengal, is one of the very smallest of fishes, not measuring over 16 millimetres (= 7 lines).
Even in the larger Heteronemertines these pores are only a few millimetres behind the mouth region.
The size of the animals varies greatly, from forms a few millimetres in length to Gigantorhynchus gigas, which measures from 10 to 65 cms. The adults live in great numbers in the alimentary canal of some vertebrate, usually fish, the larvae are as a rule encysted in the body cavity of some invertebrate, most often an insect or crustacean, more rarely a small fish.
A large number of specimens of a species are usually found together, since their only mode of spreading is during the ciliated larval stage, which although it swims vigorously can only cover a few millimetres an hour; still it may be carried some little distance by currents.
At Caracas the annual rainfall ranged from 602 to 863 millimetres between 1894 and 1902.
A little vapour is given off at ordinary temperatures and pressures, and when under a few millimetres pressure only it rapidly vaporizes below Ioo° C. The freezing-point is uncertain, owing perhaps to the existence of two modifications, as suggested by Kast (Zeits.
Hence 1000Ã† is the elongation in millimetres per metre length per kilo.
The body, which varies in length from a few millimetres to a couple of feet, is usually oval and flattened.
The length of the body, exclusive of the proboscis, which measures about a line to a line and a half, varies according to the species from 6 or 8 millimetres in the case of G.
Tachinoides, to about i i z millimetres in that of G.
35 X I 016 it is readily calculated that a molecule, or aggregation of molecules, of mass Io - 12 grammes, ought to have a mean velocity of about 2 millimetres a second at O.
The polythalamous gall of Aphilothrix radicis, found on the roots of old oak-trees, may attain the size of a man's fist; the galls of another Cynipid, Andricus occultus, Tschek, 6 which occurs on the male flowers of Quercus sessiliflora, is 2 millimetres, or barely a line, in length.
In individual size they have never been important, and of living forms the largest is one of recent discovery, Crossophorus africanus, a Cypridinid about three-fifths of an inch 05.5 mm.) long; but a length of one or two millimetres is more common, and it may descend to the seventy-fifth of an inch.
Of distilled water of the temperature of 4° C., under an atmospheric pressure equal to 760 millimetres at 0° C. at sea-level and latitude 45°; the weighing being made in air, but reduced by calculation to a vacuum.
(76 millimetres), which denotes a variation of 103 grammes per square centimetre in the pressure of the atmosphere, the change caused thereby in the length of a standard of linear measurement would appear to be as follows: --
-- Decametre or 10 metres; double metre; metre or 1000 millimetres; decimetre or 0.1 metre; centimetre or 0.001 metre; millimetre.
IIo, differs from Nicholson's instrument in being constructed of glass, and having a cylindrical bulb about 21 centimetres in length and 22 millimetres in diameter.
As a single electron charged negatively; these rays can penetrate sheets of aluminium, glass, &c., several millimetres thick; and (3) the 'y rays - which are non-electrified radiations characterized by a high penetrating power, i% surviving after traversing 7 cm.
When the time for eclosion has come, the male enters the water with his burden; the larvae, in the full tadpole condition, measuring 14 to 17 millimetres, bite their way through their tough envelope, which is not abandoned by the father until all the young are liberated, and complete in the ordinary way their metamorphosis.
Now if a be the amplitude expressed in millimetres, and t the period expressed in seconds, then the maximum velocity of an earth particle as it vibrates to and fro equals 27ra/t, whilst the maximum acceleration equals 4,r 2 0 2.
In thickness; this corresponds with an electric spark of about 7 millimetres in length.
Geissler (1815-1879) containing air, carbonic acid, hydrogen, &c., under a pressure of one or two millimetres, exhibit beautiful appearances when traversed by the high tension current produced by the secondary circuit of an induction coil.
The following analysis of two varieties of heckled Belgian flax is by Dr Hugo Miller (Hoffmann's Berichte fiber die Entwickelung der chemischen Industrie): - According to the determinations of Julius Wiesner (Die Rohstoffe des Pflanzenreiches), the fibre ranges in length from 20 to 140 centimetres, the length of the individual cells being from 2.0 to 4.0 millimetres, and the limits of breadth between 0 012 and 0.025 mm., the average being o 016 mm.
If the vessel is deep, these currents will be balanced by counter currents below them, but if the depth of the water is only two or three millimetres, the surface-current will sweep away the whole of the water, leaving a dry spot where the alcohol was dropped in.
The genital papilla of the female acquires a great development during the breeding season and becomes produced into a tube nearly as long as the fish itself; this acts as an ovipositor by means of which the comparatively few and large eggs (3 millimetres in diameter) are introduced through the gaping valves between the branchiae of pond mussels (Unio and Anodonta), where, after being inseminated, they undergo their development, the fry leaving their host about a month later.