COVER -- CONTENTS -- WAVELIKE PROPERTIES OF MATERIAL PARTICLES -- WAVE MECHANICS: SCHRODINGER EQUATION -- THE PARTICLE IN ONE DIMENSIONAL BOX -- THE PARTICLE IN THREE DIMENSIONAL BOX -- POTENTIAL STEP -- POTENTIAL BARRIER -- MAXWELL'S LAW OF DISTRIBUTION OF MOLECULAR VELOCITIES -- LIQUEFACTION OF GASES AND PRODUCTION OF LOW TEMPERATURE -- ACOUSTICS OF BUILDINGS -- THE EXPERIMENTAL BACKGROUND OF THE SPECIAL THEORY OF RELATIVITY -- THE SECOND LAW OF THERMODYNAMICS AND ENTROPY -- THE THIRD LAW OF THERMODYNAMICS -- EXTERNAL COMBUSTION HEAT ENGINE: THE STEAM ENGINE -- INTERNAL COMBUSTION HEAT ENGINES: OTTO ENGINE AND DIESEL ENGINE -- APPENDIX.