cathoden.

1914 Royal Soc. Catal. Sci. Papers 1800–1900, Subject Index III. ii. 685/2 Cathode dark space, origin.

1920 Discovery July 217/1 The dark space around the negative pole, which has since been referred to as the Crookes or Cathode Dark Space.

1939 Electronics Mar. 35 Connections of the cathode-coupled (‘cathode-follower’) stage, used for low-impedance output applications.

1941 Wireless World July 176/1 In essence, the cathode-follower stage is a device to avoid mismatching.

1941 Wireless World July 177/1 The cathode-follower gives an output voltage equal to its input voltage (the cathode potential follows the grid potential—hence the name ‘cathode-follower’).

1942 Electronic Engin. 15 287 The ‘cathode follower’ type of circuit has the distinction of being one of the most versatile circuits used by the Radio Engineer..and derives its name from the fact that an input signal that makes the grid go positive with respect to HT. negative will also make the cathode go positive with respect to HT. negative.

1896 Daily News 31 Jan. 7/2 Experiments in Cathode photography.

1905 Jrnl. Chem. Soc. 88 ii. 224 With copper, nickel, gold, and bright platinum, the cathode potential for a given current density goes on increasing for hours.

1905 Jrnl. Chem. Soc. 88 ii. 224 Cathode process and anode liquid are opposed to each other.

1879 Philos. Trans. (Royal Soc.) 170 144 It excludes such rays of the cathode as impinge upon it from reaching the side.]

1880 London, Edinb. & Dublin Philos. Mag. 10 411 It was further examined whether the negative discharges which excite the green light, the so-called kathode-rays, do really propagate themselves only in straight lines.

1897 Nature 25 Feb. 386/2 Lenard's famous researches on the Kathode rays.

1898 J. J. Thomson Discharge Electr. through Gases 190 We shall call this theory of the cathode rays the ‘corpuscular theory’.

1900 Jrnl. Chem. Soc. 78 ii. 587 Electrical Conductivity in Gases traversed by Cathode Rays.

1912 J. W. Mellor Mod. Inorg. Chem. xliii. 825 The cathode rays is [sic] a stream of negatively charged electrons sent from the cathode with a high velocity.

1927 N. V. Sidgwick Electronic Theory Valency 7 The wave-length of the X-rays given off by various elements when bombarded with cathode rays.

1951 J. R. Partington Gen. & Inorg. Chem. (ed. 2) viii. 184 These cathode rays were discovered in 1859 by Plücker, who showed that they are easily deflected by a magnet.

1957 Encycl. Brit. V. 41/1 Cathode rays have many applications, one of the chief being the excitation of X-rays by the impinging of swift electrons against a hard anticathode.

1922 R. Glazebrook Dict. Appl. Physics II. 146/2 Cathode ray oscillograph, an apparatus for delineating the instantaneous values of the current or voltage in a circuit by the deflection of a fine cathode stream.

1937 Discovery Jan. 4/1 A cathode ray oscillograph..is an instrument in which a fast beam of electrons passes between deflecting plates and impinges on a screen, where it produces a spot of light.

1951 E. B. Uvarov & D. R. Chapman Dict. Sci. (ed. 2) 44 Cathode ray oscilloscope, apparatus consisting essentially of an ‘electron gun’ producing a beam of electrons which passes through horizontal and vertical deflecting plates, to fall upon a fluorescent screen.

1905 Varley & Murdoch in Electrician 16 June 335/1 (title) Some Applications of the Braun Cathode-Ray Tube.

1934 Discovery Apr. 106/1 The advances made in the use of short waves and the introduction of cathode-ray tubes have enabled us to transmit images on screens 3 or 4 feet square.

1957 S. W. Amos & D. C. Birkinshaw Television Engin. I. ix. 210 In the majority of television receivers the picture is produced on the face of a cathode-ray tube which is viewed directly or by reflection at a plane mirror.