RMWB793J–Final check, weather device. Washington, D.C., Sept. 13. L.L. Stockman, also of the Bureau of Standards, Radium Division, uses a wave meter to check the radiometeorograph before attaching it to the parachute and the balloon. When the inflated bag breaks, which it usually does after several hours flying, the instrument is parachuted to the ground. Many times the instrument is found and returned to the bureau. The radiometeorograph contains two radio tubes, a miniature dry cell battery and devices which record and send the weather signals which, in turn, are recorded on a chronograph in Dr. Asti
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RM2CEHGMR–. An introductionto physiology. in those ligated between thepolarizing electrodes and the electrodes leadingto the electrometer. In muscle, the electrotonic currents are muchstronger than in nerve. Hegative Variation of Electrotonic Currents ;Positive Variation (Polarization Increment) of Polar-izing Current. — Place the polarization electrodesnear one end of the nerve. Conilect them througha short-circuiting key with a dry cell. From theshort-circuiting key lead to a capillary electrom-eter (Fig. 45). From the middle of the nervelead off the electrotonic current through a short- THE ELECTROMO
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RM2ABXAYW–How to Restore a Dry Cell. Drawing in General Education. What Our Contemporaries Think of It. THE MOST POPULAR SCIENTIFIC PAPERThe To Measure a Room for Wall Paper. Duroline., scientific american, 1894-02-10
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RM2CEHJKX–. An introductionto physiology. called Eitterstetanus) is probably caused by the rise of irrita-bility, which takes place in the anodal regionwhen the current is shut off, acting on a nervealready in latent excitation. A similar conditioncan be produced as follows: — Smoke a drum. Connect a dry cell through- anopen key and an electromagnetic signal with themetre posts of the rheocord (Fig. 30). Connectthe zero post and the slider of the rheocordwith the pole-changer (with cross-wires), and thelatter with two non-polarizable electrodes placedin the moist chamber. Make a nerve-muscle STIMULATION
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RM2ABXBXE–OCTOBER 20 1894.1 'DRY CELL' MEDICAL BATTERIES. THE HARMLESS SMOKER. UTILIZING THE WATER POWER OF NIAGARA FALLS. GREAT TUNNEL AND ONE OF THE WHEEL PITS AT NIAGARA FALLS., scientific american, 1894-10-20
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RMPG2MBT–. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. DISPERSAL BY WIND. 813 distributed in small detachments, and only at a suitable time, i.e. when a dry wind IS blowing. A similar contrivance is exhibited by the Muscineffi in the Mar- chantiaceae, Anthocerotace^, and JungermanniacejB. Peculiar filamentous, very hygroscopic cells with spiral bands of thickening on the cell-wall, are found with the spores in the receptacles of these plants (see p. 696). These have been called elaters, because it was thought that their movements caused the ejection of t
RM2CEGPBD–. Practical electricity for beginners. Fig. 33fuse. Cartridge FUSES AND THEIR PURPOSES 55. Fig. 34. Showing a simplemethod of testing a fuse. it with a good one. This can be done in any of several ways. A bell and a dry cell may be used, as in Fig. 34, in which case one wire is connected to the bell and the dry cell, and another to the bell only. This wire is then held in contact with the side of the fuse plug and the bottom of the plug is held in contact with the terminal of the dry cell, or connected as shown. If the bell rings, the fuse is good, but if it doesnt, the fuse has been blown. An
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RM2ABX8R2–Climate of San Diego. The Chloride of Silver Dry Cell Battery. A Brilliant Light. Ship Building at Newport News. The Great Bridge at Memphis. To Give Flowers an Artificial Color. Test for Bridges., scientific american, 1892-07-09
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RMPG3XG8–. Physiological botany; I. Outlines of the histology of phænogamous plants. II. Vegetable physiology. Plant physiology; Plant anatomy. 92 MORPHOLOGY OF THE CELL. very soft and colorless. Owing to their yielding character, it is not easy to make satisfactory sections for their demonstration, from fresh material; it is better to keep tlie material in alcohol for a while, or to dry it care- fully, as Russow advises. All sections, to show the sieve-cells.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and app
RM2CEGR2M–. Practical electricity for beginners. Fig. 27. Showing theamount of heat generatedwhen a certain wire ofhigh resistance is con-nected to a dry cell. Fig. 28. Showing the amount ofheat when the same wire as used inFig. 27 is connected to two dry cellsconnected in series or twice as muchpressure. A greater amount of heatis generated. depends upon the resistance of the conductor and the rate atwhich the current is forced to move. This being true, it ispossible to force considerable current thru a large wire havinga low resistance without causing the development of muchheat, while, on the other h
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RM2ABXWJT–THE ST. LOUIS FAIR. GRINDER Dry Battery SPARKING 15 TIM Beek° Spark Cell 4 Cells $1.25 J. H. BUNNELL & CO. Star athes GAS ENGINE IGNITERS A Rambler Reflection Perfect:gm THE IDEAL BED For Home Camp Yacht Hospital MECHANICAL FABRIC CO. 1305 1422 1400 1447 1370 1372. A Handy Book To Have The Ethridge Electrical Mfg. Co w.f.-Street EL DRILLING Machines BERKEFELD FILTER, scientific american, 1904-07-23
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RMPG1TX5–. The natural history of plants. Botany. Pig. 277. Mower (f). Fig. 278. Long. sect, of base of flower. in each of its two cells there are two ascending ovules, with micropyle exterior and inferior. But the habit is very different, and the placenta, which bears one ovule on the right and another on the left, has between them an inconsiderable prominence dividing the cell into two halves only at the internal angle. The corolla is valvate like that of Morinda; the stamens enclosed are inserted at the throat, and the fruit is dry, tardily dehiscent, as said, in four valves. In nearly all the speci
RM2CEGT20–. Practical electricity for beginners. apidly out of a large one. Likewise, electricity flows slowlythru a small wire and rapidly thru a large one (Fig. 11).Then, if a short, heavy wire were connected to the terminalsof a dry cell, a very large current would flow. If this were re-placed by another copper wire of the same length, but smallerin diameter, less current would flow. If this were continued,replacing the wire each time by one smaller in diameter, theflow of current would be less after each change. The same FLOW OF ELECTRICAL CURRENTS; CIRCUITS 31 would be true if different sizes of pi
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RM2CEGRGJ–. Practical electricity for beginners. Fig. 19. A 1.5-volt lamp con-nected to a 1.5-volt source ofpressure, a dry cell. 33. The Meaning of the Mark on a Battery Lamp.A battery lamp is usually stamped with a number giving thevoltage upon which it is designed to operate. A mark of1.5 V on the base of the lamp means that it is fnade foruse on an electrical pressure of 1.5 volts, and a mark of 6 Vmeans that it is intended for use on a 6-volt battery. Oneshould be very careful when using battery lamps to see thatthe pressure applied is not too great, for too great a pressurewill spoil them (Fig. 19
RMPG3RB4–. The elements of botany embracing organography, histology, vegetable physiology, systematic botany and economic botany ... together with a complete glossary of botanical terms. Botany. FIBRES. 281. its strength. Cotton is readily distinguished from Flax by- reference to the comparative thickness of their cell-walls, the presence of a euticula, and by the form of the cell. When air-dry, it contaiDS 6.6 per cent, of water; in an atmosphere saturated with moisture, it contains 20.9 per cent, of water. The ash constitu- ents amount to 1.8 per cent. For determining the quality, the import- ant pro
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RM2CE6F1C–. Storage battery manual, including principles of storage battery construction and design, with the application of storage of batteries to the naval service . l View of Diamond Grid Cell, Showing Details of Cell Cover. around the plug. The filling plug should habitually be kept securely lockedin position in order to keep the tops of the cells dry and as free as possiblefrom moisture grounds. The various details of the design of this cover, including the method ofsealing the cover to the jar, securing the cover to the terminal posts, andthe ventilation features are plainly shown in the sectiona
RMPG2X8W–. The natural history of plants. Botany. 16 jAtural history of plants. TropeBolmn {Ghymoearpus) pentaphylhim. above and within stigmatic papillse. In each ovary cell, of which one is posterior and the other two anterior, there is in the internal angle a single descendent anatropons ovule, with micropyle directed upwards and outwards.' The fruit is formed of three achenes, which are detached from the central axis at maturity presenting a dry, sometimes very thick, more or less spongy indehiscent monospermous pericarp. Under the coats of the seed is contained a fleshy em- bryo, the thick plano-c
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