Factsaboutphotons-MontgomeryCollege关于光子-蒙哥马利学院的事实

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1、FactsaboutphotonsPHOTONSSmallestquantityofelectromagneticradiationbundleofenergy(AKAquantum)travelsat186,400milespersecondx-rayandvisiblelightphotonsenergydisturbancesnomasshaveelectricandmagneticfieldsthatmoveinsinewavesELECTROMAGNETICRADIATIONJamesClerkMaxwelldiscoveredbothlightandx-rays

2、haveelectricandmagneticpropertiesTERMINOLOGYOFASINEWAVEAMPLITUDE:1/2RANGEFROMCRESTTOVALLEYFREQUENCY:RISEANDFALLOFSINEWAVE(HZ).ONEHZISEQUALTOONECYCLEPERSECONDWAVELENGTH:DISTANCEFROMONEVALLEYTOANOTHERORONECRESTTOANOTHERFACTSABOUT“c”,“f”ANDLAMBDACorV=velocityCincreasesasF(FREQUENCY)increasesA

3、sLAMBDA(WAVELENGTH)increases,FdecreasesV=FxLambdaC=FXLambdainelectromagneticradiationMatchtheUnitsofmeasurementHzMeterVoltsEnergyFrequencyWavelengthMISCELLENOUSFACTS80kVp=energiesfrom0-80keVx-raysareemittedfromelectroncloudgammaraysemittedfromnucleusDEFINITIONSReflectionTransmissionAbsorpt

4、ionTransparentTranslucentOpaqueSignificantinRadiologyAttenuationRadioopaqueRadiolucentPLANCK’SQUANTUMTHEORYUnderstandingofrelationshipbetweenenergyandfrequencyX-rayphotonstravelatspeedoflightandexistwithvelocityordonotexistatallphotonenergyisproportionaltophotonfrequencyPlanck’sconstantApp

5、licationofPlanck’sConstantE(eV)=h(Planck’sconstantorconstantofproportionality*)xf(photonfrequency)