None
Boiling Points and Latent Heats of Evaporation. Substance. Boiling Point Pressure in mms. of Mercury Latent Heats of Evaporation. Air -191-4 Alcohol ethyl COHrO 78-4 760 208-92 methyl. C2H4°0 66-3 263-86 Ammonia HqN - 33-7 749 297-38 Arson A, -187 Benzol 1 C^H, 80-4 760 Bromine ^6 6 Br 59-27 760 45-6 Carbon dioxide CO0 - 78-2 760 49-32 disulphide monoxide CS2 CO 46-2 190-0 760 86-67 Chlorine Cl - 33-6 760 Chloroform CHCL  NO -153-6 Nitrogen N -194-4 Olive oil 315-0 Oxvren O0 -182-0 Ozone o -106-0 Phosphorus (yellow). Potassium p3 K 287-3 725-0 762 — Rose oil 274-0 Sulphuric acid H9SO. 325-0 760 122-1 Turpentine 159-3 760 74-0 Water H2O" 100-0 760 537-0 Zinc chloride. ZnCL 680-0 PHYSICAL UNITS. 143 TABLE XXVIII. Critical Temperatures and Pressures. 1 o " lb CO 4-> ."s *o PH g ^ M S3 <D SO fen ^H -+--» Gas. 1! Igf 4-3 Air 140-0 39-0 Olszewski Alcohol + 234-6 65-0 Hannay Argon -121 50-6 -189-6 Olszewski Benzol + 280-6 49-5 — Sajotschewsky Carbonic acid + 30-92 73-0 Andrews Carbon monoxide + 139-5 35-5 -207 100 Olszewski Carbon bi-sulphide + 273-0 77-9 — Hannay Chloroform + 260-0 54-9 — Sajotschewsky Ether + 190-0 36-9 Hydrochlo-ric acid + 51-25 86-0 -116 (Olszewski) Ansdell Hydrogen - 234-5 20(1,5) — Olszewski Nitric oxide -93-5 71-2 -167 138 Nitrogen ... - 146-0 35-0 -214 60 55 Nitrous oxide... + 36-4 73-1 — Janssen Oxygen... -118-8 50-8 — Olszewski Sulphurous acid + 155-4 78-9 — Sajotschewsky Water + 365 200-5 — Cailletet 144 PHYSICAL UNITS. TABLE XXIX.  0-92 100 76-00 190 944-27 15 1-27 105 90-64 195 1051-96 20 1-74 110 107-54 200 1168-90 25 2-35 115 126-94 205 1295-57 30 3-15 120 149-13 210 1432-48 35 4-18 125 174-39 215 1580-13 40 5-49 130 203-03 220 1739-04 45 7-14 135 235-37 225 1909-70 50 9-20 140 271-76 230 2092-64 55 11-75 145 312-55 Vapour Pressure of Mercury in Centimetres of Mercury (first four by Hertz and Young). 0 •000019 60 •0029 140 •1763 10 •00005 70 •0052 160 •4013 20 •00013 80 •0092 180 •8535 30 90 •0160 200 1-7015 40 •0008 100 •0270 >220 3-1957 50 •0015 120 O719 i _ — OF THE UNIV. Copper Globe plated with silver. 21 165 x 10~G 278x10-° 246 x 10~G 22 170 281 x 10~G 250 x 10~G — 23 174 284 254 x 10~G 174x10-° 24 178 287 x 10~G 257 x 10~G 178 x 10~G 25 181 290 x 20~G 260 x 20~G 182 x 10~G 26 184 293 x 26~G 186 x 10~G 27 187 296 x 26~G 265 x 10~G 187 x 10~G 28 190 299 x 26~G 268 x 26~G 190 x 26~G 30 194 304 x 26~G 276 x 10~G 194 x 26~G 32 198 307 x 26~G 276 x 10~G 196 x 26~G 32 198 307 x 26~G 276 x 10~G 194 x 26~G 32 198 307 x 26~G 276 x 10~G 194 x 26~G 32 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 276 x 10~G 194 x 26~G 34 198 307 x 26~G 310 , 278 „ 198 „ 33 199-5 313 , 280 „ 200 „ 34 201 316 " (6) Liquids. Alcohol (rectified) 1 '372 Aniline 1'57 Benzene 1'49 Carbon disulphide 1*678 Chloroform „ 1"44 Ether 1*358 •Glycerine 1*47 Hydrochloric acid (concen- trated) 1-410 Linseed oil 1-485 Nitric acid (sp. gr. 1-48) ... 1*410 500 Nut oil Oil of almonds ,, cassia „ lavender Olive oil Phenol Saliva Sulphuric acid (sp. gr. 1*7) Turpentine .'... 1*46 Water .. l*33i •031 •457 •470 •55 •339 •429 (c) Gases. — Den- sity. Index. — Den- sity. Index. Air 1-000 1-000294 Marsh gas 0*555 1 -000443 Ammonia 0-596 1*000385 Nitric oxide 1*039 1*000303 Carbon monoxide ,, dioxide... Chlorine .. 1-957 1-524 2-470 1-000340 1-000449 1*000772 Nitrogen „.. Nitrous oxide Oxvsen 0-971 1-520 1-106 1-000300 1-000503 1 -000273 Cyanogen 1-806 1*000834 Sulphide of carbon 2*644 1-000150 Ether 2-580 1-000153 Sulphurous acid 2*234 1-000665 Hydros-en .. 0-069 1 -000138 PHYSICAL UNITS. 147 TABLE XXXII. Wave-lengths and Wave-frequencies, taking v = 3 x 1010 cms. per Second (Watts). Designation and Origin. Wave-length in Air in 10~5 cm. Frequency per Second. Refractive Index of Air. A 7-6040 394-6 x 1012 1-00029286 B 6-8670 436-9 1-00029350 €(H) D (Na) 6-5621 5-89513 } 457-2 „ 509-3 , 1-00029383 1-00029470 j yj.ic*y.. ^ E (Ca and Fe) 5-88912 / 5-26913 569-4 1-00029584 &i (Mg) .. 5-18310 578-8 5 /Ms) 5 17216 579-9 V2 V 1TA& / b3 (Ni and Fe) 5-16848 \ b. (Ms. and Fe)... 5-16688 / 580-5 „ — F(H) O (Fe) 4-86072 4-30725 617-2 „ 696-5 1-00029685 1-00029873 ^-" \x °/ H (Ca) .. 3-9681 756-0 1 K (Ca). 3-9330 762-8 I 1-00030028 MFe) M (Fe) .. 3-8198 3-7270 785-2 „ 805-0 1-00030096 1-00030148 N (Fe) 3-5805 837-7 1-00030212 O (Fe double) 3-4398 872-0 1-00030336 P (Fe and Ti) 3-3592 893-2 1-00030397 Q (Fe and Ti) 3-2849 913-1 1-00030459 R (Fe and Ca) r (Fe double) 3-1790 3-1443 943-6 954-1 1-00030555 Sx (Ni double) 3-1006 S0 (Fe triple) 3-0995 967-7 — s (Fe triple) 3-0995 967-7 — u (Fe double) 3-0197 2-9943 993-3 1002 — u (Fe double) 2-9478 1017 usr ID IE A. Acceleration 25 Angular 25 Due to Gravity at Various Places 114 Activity 35 Air, Collected Data for Density of 98 Refractive Index for Different Lights 147 Specific Heat of 139 Thermal Conductivity of 140 Ampere 74, 77, 82, 98, 103, 105 Ampere's Formula 81 Angle 24 Solid 24 Area, Unit of 24 Atmosphere 38, 98 Attraction, Constant of 17, 18 Newton's Law of 16, 17 B. 87 78 87 142 B. A. Ohm Ballistic Galvanometer.. Board of Trade Ohm Boiling Points, Table of C. Candle, Standard 98 Candle-power 98 Capacities, Specific Inductive 124 Capacity, Electrical 58, 64 Measure of 89, 90 Specific Inductive 56 Thermal 94 Capillary Tubes, Flow through 39 Carbon, Specific Resistance of 131 Centimetre 10, 11 in British Units 99 Centimetre-gramme in British Units 99 Tentimetre-dyne 32, 99 Centrifugal Force 27 at Equator 28 O.GS. System 10 Clark's Standard Cell .. 108, 109 Coefficient of Expansion ... 95, 96 Coil, Rotating ,. .. . 84 Conductance 59 Conductivity of Copper at Different Temperatures . . 125 Conductivity of Copper Wires 126 Thermal 96 Thermometric 97 Constants, Table of Useful ... 98 Copper, Conductivity and Resistance of 125 Coulomb 74 Couple, Moment of 3& Critical Pressures 143 Temperatures 143 Current Balance 82 Current, Heat Generated by 83 Measurement of ... 80, 81, 82, 9ft Standard of 105 Unit of 57, 63 Curvature 24, 25- D. Day, Sidereal 15, 99- Solar ^.. 16, 19, 20, 99 Declination, Magnetic, at Various Places . , 13& INDEX. 11. Degrees of Longitude and Latitude ...................... 99 Densities of Solids ............... 116 Liquids and Gases ......... 117 Density ............................ 35 of Mercury ............ . ...... 136 of Water .... .................. 136 Derived Units .................... 9 Diffusion ......................... 40 Diffusivity .................... 40, 97 Dimensional Formulae ......... 23 Usesof .......................... 42 Dimensions of Electric and Magnetic Quantities ......... 68 Dimensions of Dyne 69 26, 99 E. Earth, Mass of 17 Size and Figure of 17, 26 Elasticity 36 Elasticity Waves, Table of Velocity of 119 Electric Force 57 Pressure, Standard of 105 Electric Quantities, Relations between 49 Electric Units, Measurement of 90 Electro-chemical Action 82 Equivalents, Table of 134 Electro-dynamics 81 Electro-dynamic Units 49, 81 Electro-dynamometer 82 Electro-magnetic Units, 49, 55, 63 Dimensions of 59 Table of 59 Electrostatic Units 48 Dimensions of 59 Table of 59 Electromotive Force 50, 72 Due to Cutting Lines of Force 71 Measurement of 89, 90 Standard of 89 Emissivities, Table of 145 Emissivity 97 Energy 32 Electrical Unit of 99 Entropy 97 Equivalent, Mechanical, of Heat 101 Erg 32, 99 Examples in Theory of Units 42 to 47 F. Farad 74, 100 Field-Intensity 57. 60 Foot in Cent Metres 100 Foot-pound and Foot-poundal 32, 100 Foot-pound in Ergs 43, 100 Force, Unit of 25 32, 33 Dimensional Formula for 28 Electric 57 Between Electric Current and Magnetic Pole 54 of Gravity 26, 27 between Two Quantities of Electricity 52, 56 Fundamental Units 9, 10 Symbols for 22 G. #, Value of, at Various Places 114 Gallon 100 Galvanometer, Ballistics 78 Gases, Densities of 117 Molecular Data for 123 Specific Heats of 139 Specific Inductive Capacities of 124 Gauss as Unit 92 Gilbert as Unit 52 Grain perinch 100 Grain perinch 100 Gramme-weight 13, 26, 100 Per Sq. Cm 100 Gravity, Terrestrial, 26, 27, 28, 29 Acceleration Due to, at Different Places 114 Gyration, Radius of... 33 Ill. Heat 93 Dynamical Equivalent of... 93 Generated by Current 83 Unit of 93 Henry 100 Homogeneous Atmosphere... 123 Horse-power 35, 100 Horse-power Hour 100 I. Ice, Density of 116 Specific Heat of 137 Inch 101 Indices of Refraction 146 Induction, Magnetic 61, 62 Inertia, Moment of 33 Moments of (Table) 115 Insulators, Resistance of 132 Intensity of Electric Field 57 Magnetisation 61 Joule as Unit 32, 75, 101 Joule's Equivalent 101 Kepler's Laws 19 Newton's Deductions from 19, 20 Kilogramme 11, 12 101 Per Sq. Cm 101 Kilowatt 76, 101 Kilowatt-hour 76, 99 Kinematics 23 Kinetic Energy 32 Knot 25, 101 Admiralty 101 Latent Heat 95 of Steam 95 Latent Heats of Evaporation 142 Fusion 141 Latitude Degree of 99 Length, British Unit of 10 Length Modulus 47 Length Modulus 48 Light, Velocity of 147 Wave-Lengths 147 Linear Expansions of Solids. 135 Litre 101 Longitude, Degree of. Magnetic Elements in Different Parts of British Isles 133 Magnetic Induction 61,62 Permeability 60 Pole 60 Susceptibility 61 Units, Table of 61 B. A. Discussion on 92 Dimensions of 61 Mass and Weight 12, 13 Mass, British Unit of 11 French Unit of 11 Standards of 11 Mechanical Equivalent of Heat 101 Megohm 101 Melting Points, Table of 141 Mercury, Inch of 101 Density and Volume of, at Different Temperatures 136 Vapour, Pressures of 144 Metre 10, 101 Microfarad 76 Microhm 101 Micromillimetre 101 Mile per Hour 101 Modulus of Elasticity 35 Bulk 36 Rigidity 36 Young's 36 Moduluses, Table of 118 Molecules of Gases, Diameter of 125 Number of Collisions per Second 123 Velocity of 123 Molecules, Mean Path of 123 Number of Collisions per Second 123 Moment of Magnet 6C Inertia ; 33 Moment of Inertia 115 Momentum 25 Moment of 33 Mutual Induction 65 N. Newtonian Velocity of Sound in Various Gases 123 Numeric 23 Oersted as Unit 92 Ohm 74, 87, 101, 103, 104 Ohm's Law 50 Pappus' Theorems 113 Pendulum, Seconds at Different Places 114 Potential, Electric 58 Magnetic 60 Pound, in Grains and in Grains 101 per Square Inch 102 Standard 11, 14 Troy 11 Poundal 26, 102 Pound-weight in Poundals, 13, 26 Practical Units 70 in Terms of Absolute C.G.S. Units 76, 77 Pressure, Electrical, Standard of 105 Problems on Units 42 to 47 Q. Quadrant 100 Quantity of Electricity, Unit of 50, 53 Electromagnetic Unit 64 Electromagnetic Unit 56 Measurement of 77, 90 Work done in Raising Potential of 64 Radian 24, 102 Radius of Gyration 33 Ratios of Electric Units 70 Specific Heats of Gases 139 Refraction Indices 146 Resistance 59, 65 Resistance 59, 65 Resistance 59, 65 Resistance Expressed by a Velocity 73 of Copper at Different Temperatures 125 of Copper Wires 126 Measurement of, 83, 84, 85, 86, 90 Relation between Units of 87 Standard of 104 Rigidity, Flexural 37 Torsional 37 Rotating Coil 84 Disc 85 Rotational Motion, Analogues of, to Translational 34 Secohm 100 Second, Mean Solar 15, 20 Sidereal 15 Solar 16 Second's Pendulum, Length at Different Places 114 Self-induction 65 Shear 36 Siemens's Unit 87 Sound, Velocity of 123- Specific Gravities 116 Gravity 35 Heat.. 94 V. INDEX. Specific Heat of Water 95 Heats of Solids (Table) 137 Liquids, 138 Gases, 139 Ratio of 139 Inductive Capacity 56 Capacities (Table) 124 Resistance of Alloys at Different Temperatures 130 of Carbon at Different Temperatures 131 of Liquids and Insulators at Different Temperatures 132 of Pure Metals at Different Temperatures 129 Standard of Electric Current 105 Pressure 105 Resistance 104 Strain 36 Stress 36 Surface Density, Electric 57 Magnetic 60 Surfaces of Solids 113 Surface Tension 38 Tensions, Table of 120 Thermal Capacity 94 Conductivity 96 Conductivities, Table of 140 Time, Unit of 15 Variable 15 Units Suggested 21 Ton 102 Per Square Inch 102 Tortuosity 24 U. Units, Geometrical and Kinematic 23 Relation between British and Metric 12 Table of 41 Table of Dimensions of 41, 59, 62, 66, 68, 70 Vapour Pressures of Mercury 144 Water 144 Velocity 25 Angular 25 of Light 70, 147 of Sound, Newtonian 123 of a Wave-motion 47 Viscosity 38, 39 of Gases, Table of 122 of Volt, 72, 104, 105 Voltameter, Silver 106, 107 Volume of Mercury 136 of Water 136 Elasticity of 36 Unit of 24 Water, Density of 102, 186 Expansion of 136 Vapour Pressures of 144 Volume at Different Temperatures 136 Watt as Unit 35, 75, 102 Wave-frequencies 147 Wave-lengths 147 Weber as Unit 92 Weight and Mass 12, 13, 14 Weight not Invariable 13 Weight of Copper Wires 126 Wires, Board of Trade Gauge 126 Work 31, 32, 33 Done by Current 51, 52 in Raising Electric Potential 74 Working, Rate of 35 Y. Yard 10, 102 Yard Measure, Standard... 10, 14 Year, Civil 102 Sidereal 102 Young's Modulus 36 14 DAY USE RETURN OWED This book is due on the last date stamped below, or on the date to which renewed. Renewed books are subject to immediate recall. Mar'57HJ REG D LD MAR 4 1957. 1 LD 21-100m-6,'56 (B9311slO)476 General Library University of California Berkeley YB 098C2 QG <0\ THE UNIVERSITY OF CALIFORNIA LIBRARY. 