AbriefintroductiontogravitythroughEinstein’sgeneraltheoryofrelativityOfthefourfundamentalforcesofnature,gravitymightbetheleastunderstoodandyettheonewithwhichwearemostintimate.Fromthemonthseachofusspentsuspendedinthewombanticipatingbirthtothemomentswhenwewaitforsleeptotransportustootherrealities,wearealwaysawareofgravity.InOnGravity,physicistA.ZeecombinesprofounddepthwithincisiveaccessibilitytotakeusonanoriginalandcompellingtourofEinstein’sgeneraltheoryofrelativity.InspiredbyEinstein’saudacioussuggestionthatspacetimecouldripple,Zeebeginswiththestunningdiscoveryofgravitywaves.Hegoesontoexplainhowgravitycanbeunderstoodincomparisontootherclassicalfieldtheories,presentstheideaofcurvedspacetimeandtheactionprinciple,andexplorescutting-edgetopics,includingblackholesandHawkingradiation.Zeetravelsasfarasthetheoryreaches,leavinguswithtantalizinghintsoftheutterlyunknown,fromtheintransigenceofquantumgravitytothemysteriesofdarkmatterandenergy.Conciseandprecise,andinfusedwithZee’ssignaturewarmthandfreshnessofstyle,OnGravityopensauniquepathwaytocomprehendingrelativityandgainingdeepinsightintogravity,spacetime,andtheworkingsoftheuniverse.
