Campbell — Campbell. 



199 



(78, 1906). — A Standard of mutual iaductance, 

 8 S. (79, 07). — A method of comparing mu- 

 tual inductance & resistance by the help of 

 twophase alternating currents, 3 S. (81, 08). — 

 Determinat. of the absolute unit of resistance by 

 alternating current methods, 24 S. (87, 12). — 

 The measurement of alternating electric cur- 

 rents of high frequency (m. D. W. Dye), 13 S. 

 (90, 14). 



Phil. Mag.: Measurements of smaU resi- 

 stances, 8 S. (6, 1903). — Direct reading re- 

 fiistance-thermomet., with a note on composite 

 thermocouples, 9 S. (9, 05). — The use of chiUed 

 cast iroQ for perman. magnets, 4 S. (12, 06). — 

 The measurem. of mutual inductance by the 

 aid of a vibrat. galvanometer, 9 S. (14, 07). — 

 The use of variable mutual induct., 17 S. (15, 

 08). — A method of testing Photographie shut- 

 ters (m. T. Smith), 5 S. — The measurem. of 

 wave-length for high frequency electrical 

 oscillat., 8 S. (18, 09). — The use of mutual 

 inductometers, 11 S. (19, 10). 



IV Campbell, Edward, De Mille; 

 seit 1902 Prof., techn. & anal. Chemie, 

 Univ., Ann Arbor; * 1863, Sept. 9, 

 Detroit, Mich. 



Amer. Chem. Soc. Journ.: Determinat. of 

 Ni & Cr in steel (m. W. Arthur), 4 S. — A new 

 method for the determinat. of V in iron & 

 Bteel (m. E. Le Grand Woodhams), 3 S. 

 (30, 1908). — The decomposit. of methylene 

 iodide & its bearing on the constitut. of steel 

 (m. H. S. Rawdon), 9 & 9 S. (34 & 35, 12 

 &(13). 



i'^' Campbell, John Edward, M. A. ; 

 Lecturer, Hertford Coli., Oxford, Engl.; 

 * 1862, Mai 27, Lisburn, Irland. 



Introductory treatise on Lie's theory of finite 

 continuous transformat. groups, London & 

 New York 1903. 



London, Math. Soc. Proc: Bäcklund's 

 transformat. & the partial differential equat. 

 s = F (x, y, z), 39 S. (5, 1907). — Applicat. 

 of quatern. to the problem of the infinites, 

 deformat. of a surf., HS. (6, 08). — Cyclic con- 

 gruences, 10 S. (8, 10). — Invariants of the 

 linear partial different. equat. of the 2. order 

 in 2 independ. variables), 17 S. (10, 11/12). — 

 A class of surfaces in Euclidean space which 

 generate an express. for the space time inter- 

 val in Einstein's geometry of a partic. form, 

 8 S. (21, 22). 



Campbell, Norman R., Dr.; Phy- 

 siker, Cambridge, Engl. 



Modem electric. theory, 344 S. Cambridge, 

 & New York, 1908. — Principles of electricity 

 (People's Books). London & Edinburgh 12. — 

 Moderne Elektrizitätslehre, übers, v. D. Ulfilas 

 Meyer, 423 S., Dresden 13. — Modern elec- 

 trical theory, 2. Aufl., 412 S., Cambr., 13. — 

 Series spectra. 2. Aufl., 110 S., Cambridge 21. 

 Cambrldgp, Phll. Soc. Proc: A null method 

 of measuring small ionisat., IS. — The radio- 

 activity of metals & their salts, 6 S. (13, 1904 — 

 06). — Radioactivity of the alkali metals (m. 

 A. Wood), 7 S. (14, 08). — The ß rays fr. po- 

 tassium, 6 S. — The number of electrons in an 

 atom, 5 S. — Radioactivity of potassium, with 

 special reference to soluts. of its salts, HS. 

 (14, 08). — Radioactiv. of Rb, 2 S. — Study 

 of discontinuous phenomena, 20 S. — Disconti- 

 nuities in light emiss. 19 & 13 S. (15, 10). 



Jahrb. d. Radioakt. u. Elektronik: Radio- 

 aktivität als allgem. Eigenschaft d. chem. Ele- 

 mente, 29 S. (2, 1905). — Der Äther, 14 S. 

 (7, 10). — D. (5-Strahlen, 20 S. (9, 12). 



Phil. Mag.: Some experim. on the electrical 

 discharge fr. a point to a plane, 9 S. (6, 1903). — 

 The radiat. fr. ordinary materials, 14 S. — Ra- 

 dioactiv. & chemical change, 5 S. (9, 05). — 

 The radiat. fr. ordinary materials, 20 S. (11, 

 06). — The effect of change of temper. on spon- 

 taneous ionizat., 8 S. (13, 07). — The absorpt. 

 of ß rays by liquids, 10 S. (17, 09). — The prin- 

 ciples of dynamics, 13 S. ^ The aether, HS. 

 (19, 10). — A method of determining capa- 

 cities in mearurements of ionizat., 3 S. — The 

 common sense of relativity, 15 S. — On relativ. 

 & the conservat. of momentum, 4 S. (21, 11). — 

 ö-rays, 27 S. (22, 11). — Delta rays, 18 S. — 

 Ionizat. by coUision, 12 S. — Ionizat. by a- 

 rays, 21 S. — The electr. resistance of xylol- 

 alcohol mixtures, 2 S. — Non-Newtonian me- 

 chanics, IS. — The theory of ionizat. by col- 

 lis., 1 S. (23, 12). — Further experim. on ö- 

 rays, 14 S. — Delta rays produced by ß-i&ya, 

 5 S. (24, 12). — Ionizat. by charged particles, 

 14 S. (25, 13). — The velocity of ö-rays, 2 S. — 

 A special case of gaseous conduct., 13 S. — 

 Electr. resistance of mixtures of xylol & alco- 

 hol, 9 S. (26, 13). — 6-rays fr. gases, 8 S. (27, 

 14). — Ionizat. of Pt by cathode rays, 16 S. 

 (28, 13). — Ionizat. of metals by cathode rays, 

 14 S. — Ionizat. by positive rays, 12 S. (29, 

 15). — Experiments on the high-tens. magnets, 

 17 & 24 S. — „Break'' of a magneto or induct. - 

 coil, 14 S. (37, 19). — Time-lag in the spark 

 discharge, 17 S. — Measurem. of time & other 

 magnitudes, 3 & 2 S. (38 & 40, 19 & 20). — 

 Adjustment of observats., 18 S. (39, 20). — 

 Disappearance of gas in the electric discharge 

 (m. J. W. H. Ryde). By the Research Staff of 

 the General Electric Company (Work conducted 

 by N. R. Campbell), 26 & 22 S. (40 & 41, 

 20 & 21). — Physic. significance of the least 

 common multiple (m. E. C. C. Baly), 10 S. 

 (41, 21). — Disappearance of gas in the elec- 

 tric discharge. IV (m. H. Ward), 24 S. (43, 22). 



Physik. Zeitschr.: Schweidlersche Schwan- 

 kgn., 8 S. (11, 1910). — Bemerkg. zu d. Arb. 

 V Hauser: Selbstauf ladg. v. Polonium, 1 S. 

 (12, 11). — Relativitätsprinzip & Äther, 9 S. 

 (13, 12). 



Siehe A. Wood. 



i^ Campbell, W. William, B.S 1886 

 Ann Arbor, LLD e. h. 1902 Madison; 

 1886-88 Prof., Math., Univ., Boulder, 

 88—91 Instr., Astron., Univ., Ann 

 Arbor, seit 1901 Direkt, des Lick- 

 Obs. Nahm teil an einer Reihe von 

 Expeditionen z. Beobachtg. v. Finster- 

 nissen, ist Inhaber einer Reihe v. Aus- 

 zeichngn. & Mitgl. zahlreicher gelehrt. 

 Gesellsch. verschied. Länder; * 1862, 

 April 11 auf einer Farm in Hancock Co, 

 Ohio. (Eig. Mitt.) 



Elements of practical astron., 1899. — Stellar 

 mots. ; with spec. reference to mots. deter- 

 mined by means of the spectrograph, 338 S., 

 Oxford 1913. 



Astron. Nachr.: Radial velocities of ne- 

 bulae, 1 S. (188, 1911). 



California, Lick Obs. Bull.: Evidences of 

 rapid convection in stellar atmospheres, 1 S. 



