CONTENTS. ix 



CHAPTER IX. 



rum 



THE KINETIC THEORY OF MATTER. 



Atomic Hypotheses Solids Liquids Gases Kinetic Theory of Gases Mean 

 Value of the Square of the Velocity of Translation V 2 Mixture of Gases 

 Relation between V and Temperature Energy of Translation and Internal 

 Energy Joule's Approximate Method of Calculating the Velocity of Mean 

 Square Effusion or Transpiration through a small Orifice into a Vacuum 

 Thermal Transpiration The Mean Free Path The M.F.P. calculated 

 from the Coefficient of Viscosity Conduction of Heat in Gases The 

 Diameter of the Molecules and the number of Molecules per Cubic Centi- 

 metre Forces acting on unequally heated Surfaces in High Vacua The 

 Gas Equation of Van der Waals 129-156 



CHAPTER X. 

 CHANGE OF STATE LIQUID-VAPOUR. 



General Account of Evaporation Vapour-Pressure Boiling Delayed Boiling 

 Condensation on Nuclei Measurements of Vapour-Pressure Determina- 

 tion of Vapour Density Density of Saturated Vapour Measurements of 

 Latent Heat of Vapours Specific Heat of Saturated Vapour Spheroidal 

 State 157-184 



CHAPTER XI. 

 CHANGE OF STATE-LIQUID-VAPOUR (continued). 



Indicator Diagram Critical Point Critical Constants Equation of Van der 



Waals Liquefaction of Gases 185-199 



CHAPTER XII. 

 CHANGE OF STATE SOLID-LIQUID. 



Melting of Ice and Melting of Wax Melting of Ice at a Definite Point and on 

 the Surface only Latent Heat Supercooling Regelation Effect of 

 Pressure on Melting-Point Melting-Points of Solids Explanation of 

 Melting on the Kinetic Theory Resemblance of Solution to Fusion 

 Evaporation from Solids 200-208 



CHAPTER XIII. 

 WATER IN THE ATMOSPHERE. 



Hygrometry Relative Humidity Dew - Point and its Determination 

 Regnault's Researches on the Density of Water- Vapour Cloud Con- 

 vective Equilibrium Halos and Parhelia Coronas Rate of Fall of Cloud 

 Drops Hail Fog Dew 209-219 



