Schedule of Classification 



5675 



5680 



5685 



PAGE 



Specific Resistance 671-677 



Alloys 671-672 



Carbon 672 



Liquids ... ... ... 673 



Metals 673-676 



Copper ... ... 674 



Mercury ... ... 675 



Wires 675-676 



Relations to Temperature, 

 Torsion, Magnetism, 

 Light, etc. ... 677-681 



Light and Resistance, Re- 

 lations ... 677-678 

 Selenium ... 677-678 

 Magnetism and Resis- 

 tance, Relations 678-679 



Bismuth 678 



Strain and Resistance, 



Relations 679 



Temperature, Magnetism 

 and Resistance, Rela- 

 tions 679 



Temperature and Resis- 

 tance, Relations 679-681 

 Metals ... 680-681 



Nature of Metallic Conduc- 

 duction. Electronic 



Theory 681-682 



Electronic Theory ... 682 

 Conduction in Continuous 

 Media of Two and Three 

 Dimensions ... 682-684 

 Conduction in Continuous 

 Media of Two Dimen- 

 sions 682-683 



Sheets 682-683 



Conduction in Continuous 

 Media of Three Di- 

 mensions 



683 

 684 



685 

 685 



_ linaers 



Equipotential Lines 

 Conduction in Gases and 



Vapours. (See also 6805.) 685-690 

 Conduction in Oases in 



Normal State 



Determination of Charge 



carried by Ion ... 

 Discharge in Rarefied Gases, 



Resistance of so-called 



Vacuum. (See. also 6840.) 685-686 

 Electric Arc. (See also 



6830.) 686 



Magnetic Field 686 



Properties of Gases in Con- 

 ducting State . . . 686-688 



Flames 687 



Hot Gases 687 



Ratio of Charge to Mass ... 688 

 Spark Discharge. (See also 



6820.) ... 688-689 



Spark Potential ... 689 



PAGE 



Theory of Conduction 



through Ionised Gases 689-690 

 5695 Measurement of Electro- 

 motive Force ... 690-693 



Cells 690-692 



Standard Cells ... 691-692 



Clark Cell ... 691-692 



Weston Cell 692 



5700 Measurement of Continuous 

 Currents (Strength, Con- 

 sumption of Energy, etc.). 

 (See also 6010.) ... 693-694 

 Consumption of Energy . . . 693 

 Measurement of Current 



Strength 693-694 



5705 Measurements of Alternating 

 Currents (Periodicity, 

 Amplitude,Consumption 

 of Energy, Work, etc.). 

 (See also 6015.) ... 694-696 



Curves 694-695 



Energy Measurement ... 695 

 Polyphase Currents ... 696 

 5707 Measurement of Transient 



Currents 696-697 



5710 Thermoelectricity. Peltier 



and Thomson Effects 697-704 



Thermoelectricity ... 697-704 



Experiments ... ... 698 



Phenomena 698 



Thermocouples 699 



Thermoelectric Currents 699-700 

 Thermoelectric Series ... 700 

 Thermoelectricity of 



Various Substances 700-702 

 Metals (in general) ... 701 

 Thermoelectromotive Force 702 

 Thermopiles ... 703-704 

 Peltier and Thomson Ef- 

 fects 704 



Peltier Effect 704 



Thomson Effect 704 



5720 Measurements relating to 

 Energy of the Current. 

 Heating Effect ... 705-707 



Measurements relating to 



Energy of the Current... 705 



Heating Effect ... 705-707 



Conductors ... 705-706 



Wires 706 



5740 Measurement of Capacity. 



(See also 6005.) 707-708 



Cables 707 



Condensers ... 707-708 



Methods of Measurement 708 

 5770 Insulation Resistance, De- 

 termination. Location 

 of Faults in Conductors 708-710 

 Insulation Resistance, De- 

 termination ... 708-709 

 Cables . 708-709 



