aP aT du=Tds-Pdy dH TdS+vdP aT aP S aP dF=-SdT-Pdv aT dG=-SdT+VdP aS aP OT Good Physicists Have Studied Under Very Fine TeachersV V S T S P          =        − dU=TdS-PdV T T V P V S          =        dF=-SdT -PdV S S P V P T          =        dH=TdS+VdP T T P V P S          =        dG=-SdT+VdP − G P H S U V F T Good Physicists Have Studied Under Very Fine Teachers