- 01.Forcesmakethingschange
- 0:0 免费01.NewtonsThirdLaw
- 0:0 免费02.Resultantforcesandtheireffec ...
- 0:0 免费03.Moments,leversandgears
- 0:0 免费04.Balancing
- 0:0 免费05.Force,massandacceleration(a= ...
- 0:0 免费06.NewtonsSecondLaw
- 0:0 免费07.Stopping(andestimatingstoppi ...
- 02.Nuclearphysics
- 0:0 免费01.Evidenceofatomicstructure
- 0:0 免费02.Unstablenuclei
- 0:0 免费03.Nucleardecay
- 0:0 免费04.Ionisingradiation
- 0:0 免费05.Radioactivehalf-life
- 0:0 免费06.Activityandhalf-lifecalculat ...
- 0:0 免费07.Usesofradiation
- 0:0 免费08.Nuclearfissionandfusion
- 03.Electromagnetism
- 0:0 免费01.Plottingmagneticfields
- 0:0 免费02.Anelectromagnet
- 0:0 免费03.Strengthofanelectromagnet
- 0:0 免费04.Applicationsofelectromagnets
- 0:0 免费05.Anelectricmotor
- 04.Electromagneticwaves
- 0:0
免费01.Reflectionoflight(includings ... - 0:0 免费02.Refractionthrougharectangula ...
- 0:0 免费03.Refractionthroughasemicircul ...
- 0:0 免费04.Lightandcolour
- 0:0 免费05.Convexlenses
- 0:0 免费06.Scalediagramsforconvexlenses
- 0:0 免费07.Virtualimagesfromconvexandco ...
- 0:0 免费08.Thespectrumofelectromagnetic ...
- 0:0 免费09.Absorbinginfraredradiationpr ...
- 0:0 免费10.Emittinginfraredandblackbody ...
- 0:0 免费11.Ionisingelectromagneticradia ...
- 0:0 免费12.Non-ionisingelectromagneticr ...
- 05.Mainselectricity
- 0:0 免费01.Dangerfromelectricshock
- 0:0 免费02.Shortcircuitsandearthwires
- 0:0 免费03.Powerofanapplianceorelectric ...
- 0:0 免费04.Calculatingwithelectriccharg ...
- 0:0 免费05.TheNationalGrid
- 0:0 免费06.Energyresources
- 06.Gravityinspace
- 0:0 免费01.Thesolarsystem
- 0:0 免费02.Orbitalmotionofartificialsat ...
- 0:0 免费03.Birthofastar
- 0:0 免费04.Stellarevolution
- 0:0 免费05.Observingtheuniverse
- 0:0 免费06.Thechanginguniverse