Part 241

Te*lem"e*ter, n. An apparatus for recording at a distant station the indications of physical instruments such as the thermometer, galvanometer, etc.

Tel`e*met"ro*graph (?), n. [Gr. th^le far + me`tron measure + -graph.] A combination of the camera lucida and telescope for drawing and measuring distant objects. -- Tel`e*me*trog"ra*phy (#), n. -- Tel`e*met`ro*graph"ic (#), a.

Tel`e*mo"tor (?), n. [Gr. th^le far + motor.] (Naut.) A hydraulic device by which the movement of the wheel on the bridge operates the steering gear at the stern.

Tel*en"er*gy (?), n. [Gr. th^le far + energy.] Display of force or energy at a distance, or without contact; -- applied to mediumistic phenomena. -- Tel`en*er"gic (#), a.

Te*len"gi*scope (?), n. [Gr. th^le far + &?; near + -scope.] (Optics) An instrument of such focal length that it may be used as an observing telescope for objects close at hand or as a long-focused microscope.

Tel`e*phone ex*change". A central office in which the wires of telephones may be connected to permit conversation.

Tel"e*phote (?), n. [Gr. th^le far + fw^s, fwto`s, light.] A telelectric apparatus for producing images of visible objects at a distance.

Tel`e*pho"to (?), a. Telephotographic; specif., designating a lens consisting of a combination of lenses specially designed to give a large image of a distant object in a camera of relatively short focal length.

Tel`e*pho"to*graph (?), n. [Gr. th^le far + photograph.] A photograph, image, or impression, reproduced by or taken with a telephotographic apparatus.

Tel`e*pho`to*graph"ic (?), a. Designating, or pertaining to, the process of telephotography.

Tel`e*pho*tog"ra*phy (?), n. 1. The photography of distant objects in more enlarged form than is possible by the ordinary means, usually by a camera provided with a telephoto lens or mounted in place of the eyepiece of a telescope, so that the real or a magnified image falls on the sensitive plate.

2. Art or process of electrically transmitting and reproducing photographic or other pictures at a distance by methods similar to those used in electric telegraphy.

3. Less properly, phototelegraphy.

Tel"e*scope (tl"*skp), a. Capable of being extended or compacted, like a telescope, by the sliding of joints or parts one within the other; telescopic; as, a telescope bag; telescope table, etc.

Telescope bag. An adjustable traveling bag consisting of two cases, the larger slipping over the other.

Tel`e*scop"ic sight`. A sight consisting of a small telescope, as on a compass or rifle.

Tel"e*seism (?), n. [Gr. th^le far + &?; shock.] A seismic movement or shock far from the recording instrument. -- Tel`e*seis"mic (#), a.

Tel"e*seme (?), n. [Gr. th^le far + &?; sign.] A system of apparatus for electric signals providing for automatic transmission of a definite number of different signals or calls, as in connection with hotel annunciators.

Tel`e*ste"re*o*graph` (?), n. [Gr. th^le far + stereograph.] An instrument for telegraphically reproducing a photograph. -- Tel`e*ste`re*og"ra*phy (#), n.

Tel`e*ther"mo*graph (?), n. [Gr. th^le far + thermo- + -graph.] (Physics) (a) A record of fluctuations of temperature made automatically at a distant station. (b) An instrument, usually electrical, making such records.

Tel"ford (?), a. [After Thomas Telford, a Scotch road engineer.] Designating, or pert. to, a road pavement having a surface of small stone rolled hard and smooth, distinguished from macadam road by its firm foundation of large stones with fragments of stone wedged tightly, in the interstices; as, telford pavement, road, etc.

Tel"ford*ize (?), v. t. [imp. & p. p. Telfordized (?); p. pr. & vb. n. Telfordizing (?).] To furnish (a road) with a telford pavement.

Tel`har*mon"ic (?), a. Of or pertaining to telharmonium.

Tel`har*mo"ni*um (?), n. [Gr. th^le far + harmolium.] An instrument for producing music (Tel*har"mo*ny [&?;]), at a distant point or points by means of alternating currents of electricity controlled by an operator who plays on a keyboard. The music is produced by a receiving instrument similar or analogous to the telephone, but not held to the ear. The pitch corresponds with frequency of alternation of current.

Tell"tale`, n. 1. A thing that serves to disclose something or give information; a hint or indication.

It supplies many useful links and telltales.

Saintsbury.

2. (Railroads) An arrangement consisting of long strips, as of rope, wire, or leather, hanging from a bar over railroad tracks, in such a position as to warn freight brakemen of their approach to a low overhead bridge.