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; THIRD LAW OF THERMODYNAMICS; EXTERNAL COMBUSTION HEAT ENGINE: THE STEAM ENGINE; INTERNAL COMBUSTION HEAT ENGINES: OTTO ENGINE AND DIESEL ENGINE. APPENDIX.