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Seite 80 - He succeeded in obtaining photographs of the curves on the wax cylinder, a beam of light reflected from a small mirror attached to the vibrating disc of the phonograph being allowed to fall on a sensitive plate while the phonograph was slowly travelling.
Seite 73 - In each case a compound tone was produced which retained the same pitch so long as the wheel revolved at the same rate. By keeping the wheel revolving at a uniform rate, and at the -same time changing the length of the spring which was allowed to vibrate, Willis found that the qualities of various vowels were imitated with considerable distinctness. In 1837 Wheatstone,'' in a criticism of Willis, made some important suggestions.
Seite iv - Fellow of the Royal Society of Edinburgh, he was a member of the Northern Meeting, the Highland Society of London, the Somersetshire Society, the Tithe Redemption Trust, the Somersetshire Discharged Prisoners Aid Society, and the Somerset Archaeological and Natural History Society.
Seite 78 - Any given regular periodic form of vibration can always be produced by the addition of simple vibrations, having vibrational numbers, which are once, twice, thrice, four times, etc., as great as the vibrational number of the given motion.
Seite 634 - ... give Zeeman's normal results of the splitting of a bright line into two sharp lines circularly polarized in opposite directions, when the light is viewed from a direction parallel to the lines of magnetic force; and the dividing of each bright line into three, each plane-polarized, when the light is viewed from a direction perpendicular to the lines of force.
Seite 131 - Moissan we have had a disc of this metal, about 5 cm. diameter and | cm. thickness, placed at our disposal. We made a few preliminary observations on its diselectrifying property. We observed first the rate of discharge when a body was charged to different potentials. We found that the quantity lost per half-minute was very far from increasing in simple proportion to the voltage, from 5 volts up to 2100 volts ; the electrified body being at a distance of about 2 cm.
Seite 4 - In 1880 he was appointed to the Chair of Materia Medica and Therapeutics in the University of that city.
Seite 528 - D.2 lines of the spectrum of solar light, which has travelled from the source through a hundred kilometres of sodium-vapour in the sun's atmosphere, must be identical in breadth and penumbras with those seen in a laboratory experiment in the spectrum of light transmitted through half a centimetre or a few centimetres of sodium-vapour, of the same density as the densest part of the sodium-vapour in the portion of the solar atmosphere traversed Fio.
Seite 632 - ... subsiding train of waves of transverse vibration, of the kind which, in communications to Section A of the British Association* at its meeting in Bristol last September, I described as a solitary wave of the simplest possible kind in an elastic solid, and again, for periodic motion, as a very simple and symmetrical case of a train of periodic waves of transverse vibration. The work done by the circuital force on the ring is spent on waves of this class travelling outwards through ether, and in...
Seite 413 - List of Oceanic Depths and Serial Temperature Observations received at the Admiralty during the year 1898, from HM Surveying Ships, Indian Marine Survey, and British Submarine Telegraph Companies. London: JD Potter, 1899. Size 13J x 8J, pp. 26. Price 4».