American Heritage® Dictionary of the English Language, Fourth Edition
- n. A device that records oscillations, as of an electric current and voltage.
Century Dictionary and Cyclopedia
- n. An instrument for recording alternating-current wave-forms and for the study of electrical oscillations. The oscillograph in its usual form is a development of the D'Arsonval galvanometer in which the moment of inertia of the moving parts is reduced to a minimum and the period of the instrument is sufficiently shortened to enable the moving parts to follow the rapid oscillations that are to be recorded. In 1892 Moler constructed a curve-writing voltmeter for recording the changes in potential in the coils of dynamo-machines which, although lacking in sensitiveness and incapable of giving very rapid fluctuations, must be regarded as the forerunner of the oscillograph. It consistedof a needle of soft iron mounted between the poles of a permanent magnet and carrying a very light pointer of aluminium by means of which the movement of the needle was recorded upon a revolving metallic drum with smoked surface. The frequency was something over 100 complete vibrations per second. In the following year Blondel, to whom the name oscillograph is due, described various forms of the instrument, of which the most successful consisted of a soft iron needle and mirror pivoted between the poles of an electromagnet and vibrating with a frequency of 1,000 oscillations per second. In 1894–95, by greatly reducing the size of the needle and mirror and mounting the same by means of a quartz fiber between the poles of an electromagnet, Hotchkiss succeeded in producing a galvanometer having a frequency of nearly 10,000 single vibrations per second. The essential features of this instrument are shown in Fig. 1 and Fig. 2. The needle is mounted between the pole-pieces N and S, Fig. 1, by means of a fiber stretched between the supports r and r', about which is also wound a coil of wire within which the oscillations to be studied are set up. Rays from an arc-light L1, Fig. 2, are reflected to the sensitive plate of a camera, S, so constructed that the plate can be shot through the field at right angles to the plane of vibration. With this instrument not only alternating-current curves but likewise curves showing the phenomena of the oscillatory discharge of condensers may be recorded with great fidelity. The form of oscillograph now generally employed is that devised by Duddell in 1897. It consists essentially of a flat strip of phosphor-bronze carried vertically up through the field of an electromagnet, over a roller, and down through the field parallel to itself; to these strips in the middle of the field the mirror and needle are attached. The frequency of oscillation reaches .0003 of a second. When a current is sent through the strip from A to B (Fig. 3) the portion in which the current is flowing upward moves in the opposite direction from that in which the flow is downward, and the mirror is deflected. The spot of light reflected from the mirror is thrown upon the screen for observation, or upon a moving photographic plate for permanent record.
- n. An apparatus for recording graphically the motions of oscillation of any structure or element as to frequency and magnitude. The element may carry a pen or tracing-point, while a paper, borne on a fixed support, is moved before the tracer as the latter oscillates; or the principle may be reversed: used to record the effect of trains on bridges, or of moving machinery in buildings, or the effect of earth-movements on structures.
- n. An instrument for measuring alternating or varying electric current in terms of current and voltage.
GNU Webster's 1913
- n. a device for making a record of the wave forms of fluctuating .
- n. (Elec.) An apparatus for recording or indicating alternating-current wave forms or other electrical oscillations, especially of voltages or currents; it usually consists of a galvanometer with strong field, in which the mass of the moving part is very small and frequency of vibration very high.
- n. a device for making a record of the wave forms of fluctuating voltages or currents
- oscill(ation) + -graph. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Cambridge who devised the convenient moving-iron oscillograph which is now in common use; to all these my own work is deeply indebted.”
“Turner grabbed for an aluminum-encased oscillograph.”
“Back in the lab, we fished up from the hole the muscle's pointy end and tied it to an oscillograph whose pen-arm moved at first in even sweeps.”
“Bell had just bought a new automatic oscillograph reader that spring whose purpose was to transfer that data to punch cards so it could be plotted by another machine.”
“His job was to handle two life-sized dummies equipped with instrumentation including an oscillograph.”
“Back then, the gauges were hooked up to an oscillograph, a machine that recorded data in squiggly lines on a moving roll of graph paper, something like an electrocardiograph did before the digital age.”
“Instead of this, we have Yulia “the oscillograph hand” Latynina, Yevgeniya “get out of the job” Albats, and, now, Julia.”
“Neither on the wave oscillograph nor on the telecom evaluator did the two simultaneously examined hypercom messages show any difference.”
“He imagined how desperately they would watch the hypercom sine waves on the oscillograph, utterly unable to understand why they could not get any rational sounds although they had determined the pulse-bursts and scrambler timing to the fifth decimal place.”
“Now the wave-oscillograph needed only to be switched on.”
These user-created lists contain the word ‘oscillograph’.
includes words of the "Prodcom list"
Hopefully, I'll be using this site for more than one year. It will be fun then to look back and see what new words I found worthy of notice in any given year.
All words spotted in 2008...
I'm especially fond of ones written by Charles Sanders Peirce.
Looking for tweets for oscillograph.