Fleming, Civil War and Reconstruction in Alabama (New York, 1905), and Documentary History of Reconstruction (Cleveland, 1906); J.
Fleming devised an arrangement in which a multiple transformation takes place, two oscillation circuits being interlinked inductively, and the last one acting inductively on the open or antenna circuit.
Fleming devised a method which has practical advantages in both preventing the arc and permitting the oscillatory currents to be controlled so as to make electric wave signals.
Fleming 5 invented special forms of the metallic contact or metallic filings sensitive tube.
Fleming, The Principles of Electric Wave Telegraphy and Telephony, p. 416, 2nd ed.
Fleming, 14 L.
Fleming, " A Note on a Form of Magnetic Detector for Hertzian Waves adapted for Quantitative Work," Proc. Roy.
Fleming invented in 1904 a detector called an oscillation valve or glow lamp detector made as follows: 1 A small carbon filament incandescent lamp has a platinum plate or cylinder placed in it surrounding or close to the filament.
Fleming discovered that if the filament is made incandescent by the current from an insulated battery there is a unilateral conductivity of the rarefied gas between the hot filament and the metal plate, such that if the negative terminal of the filament is connected outside the lamp through a coil in which electric oscillations are created with the platinum plate, only one half of the oscillations are permitted to pass, viz., those which carry negative electricity from the hot filament to the cooled plate through the vacuous space.
Fleming, Proc. Roy.
- A, antenna; P S, jigger or oscillation transformer; C, condenser; 0, Fleming oscillation valve; B, working battery; T, telephone; R, rheostat; E, earth-plate.
Fleming, 1906, sect.
Fleming, but the arrangements were subsequently altered and improved by Marconi, one of the most important additions being a form of high-speed rotating disk discharger devised by Marconi by which he was able to immensely increase the speed of signalling.
Fleming, The Principles of Electric Wave Telegraphy (London, 1906), chap. vii.; also Cantor Lectures on Hertzian wave telegraphy, Lecture iv., Journ.
Fleming (Proc. Roy.
Fleming, The Principles of Electric Wave Telegraphy, 1906, p. 73.
The Fleming closed circuit wave meter, called by him a cymometer, consists of a sliding tube condenser and a long helix of wire forming an inductance; these are connected together and to a copper bar in such a manner that by one movement of a handle the capacity of the tubular condenser is altered in the same proportion as the amount of the spiral inductance which is included in the circuit.
Fleming, " Electric Oscillations and Electric Waves," Cantor Lectures, Journ.
Fleming, Hertzian Wave Telegraphy (1905); id., The Principles of Electric Wave Telegraphy and Telephony (2nd ed., 1910); J.
Fleming, An Elementary Manual of Radiotelegraphy and Radio-telephony (1908); H.
A few years afterwards, a Fleming named Rubruquis was sent on a similar mission, and had the merit of being the first traveller of this era who gave a correct account of the Caspian Sea.
CHESTER The important palatine earldom of Chester was first held by a certain Fleming named Gherbod (fl.
Fleming, Fleming already the author of a harmless and extremely orthodox Philosophy of Zoology, pointed out in 1829 in the Quarterly Review (xli.
In 1828 Fleming brought out his History of British Animals (8vo), in which the birds are treated at considerable length (pp. 41-146), though not with great success.
The most brilliant star of this constellation, a-Aquilae or Altair, has a parallax of 0.23", and consequently is about eight times as bright as the sun; q-Aquilae is a short-period variable, while Nova Aquilae is a " temporary " or " new " star, discovered by Mrs Fleming of Harvard in 1899.
Fleming, A Handbook for the Electrical Laboratory and Testing Room (2 vols., London, 1901, 1903); G.D.Aspinall Parr, Electrical Measuring Instruments (Glasgow, 1903); J.
Francis P. Fleming Henry L.
Kiepert; Paul Fleming at Glogau (K.
Cheadle (1861), and by Sandford Fleming (1871-1872) in the Ocean to Ocean expedition; (4) Peace River Pass.
Fleming first recommended the use of blockletters as being more convenient both to printers and readers.
Fleming, it 47r requires about 18 foot-pounds of work to make a complete mag netic cycle in a cubic foot of wrought iron, strongly magnetized first one way and then the other, the work so expended taking the form of heat in the mass.
Fleming, Magnets and Electric Currents, p. 193) are shown three very different types of hysteresis curves, characteristic of the special qualities of the metals from which they were respectively obtained.
The applicability of the law to cobalt has been investigated by Fleming (Phil.
Fleming rightly regards it as not a little curious that for materials differing so much as this cast cobalt and soft annealed iron the hysteretic exponent should in both cases be so near to 1.6.
The values of this ratio for different values of B, as given by Fleming (Phil.
Fleming and J.
It may be remarked that, whereas Fleming and Dewar employed the ballistic method, their specimens having the form of rings, Honda and Shimizu worked magnetometrically with metals shaped as ovoids.
Fleming and Dewar (loc. cit.
Fleming and R.
Dewar and Fleming (Proc. Roy.
Fleming -0.74 Roy.
Fleming and Dewar determined the susceptibility of liquid oxygen (Proc. Roy.
Fleming and Dewar give for the susceptibility the values-13.7 X 6 at 15° C. and - 15.9X 10 -6 at - 182°, the latter being approximately equivalent to KX Io 6 = - 1.62.
Putting t°= - 182 in the equation given above for Curie's results, we get K X Io 6 = - 1.66, a value sufficiently near that obtained by Fleming and Dewar to suggest the probability that the diamagnetic susceptibility varies inversely as the temperature between-182° and the melting-point.
Fleming (ed.), Documents relating to Reconstruction (Cleveland, 0., 1906); W.
Fleming, Civil War and Reconstruction in Alabama (New York, 1905); and James W.
Fleming and W.