物理词汇总表1(Glossary of terms used in A Level Physics1)-37961354

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1、GlossaryoftermsusedinPhysicsAbsolutezerooftemperature:thelowerfixedpointonthethermodynamicscaleoftemperature;itisconsideredtobethelowestpossibletemperatmeintheuniverseAbsolutescaleoftemperature:atheoreticaltemperaturescalethat由esnotdependonthethermometricpropertyofamaterialAcceleration:th

2、erateofchangeofvelocitywithrespecttotime.1thasthe51unit8ofms-2,Accelerationoffreef811:therateofchangeofvelocityofanobjectwhenitfallsfreelytowardstheEarth'ssurfaceunderthe801einfluenceofmegravitationa1pullofmeEarth.Itisdenotedbythesymbolgandhasanumerical2valueof9.81ms-Accuracy:theproximity

3、oftheobservedreadingonaninstrumenttothetrueoractualvalueofthephysicalQuantitybeingmeasuredA皿皿eter:anelectricalinstrumentthatmeasurestheelectriccurrentinaClrcUlt.Amountofsubstance:thenumberofmolesofasubstance(seemoles)7Ampere:theconstantcurrentthatexertsaforceof2xlO-Npermetrelengthontwostr

4、aight,paralle1andinfinite1y1ongwireofnegligiblecross-sectionalareawhenthatcurrentflowsthroughthetwowires.Itisthe51unitofanelectriccurrentandisrepresentedbythesymbol1Amplitude:themaximumdisplacementfromtheeQuilibriumpositiontothecrestortroughofasinusoidalwaveAngulardisplacement:theangleth

5、roughwhicharotatingaxisturns.TtisusuallymeasuredinradiansAngularvelocity:therateofchangeofangulardisplacementwithrespecttotime,1tismeasuredinradS-IAnode:positiveelectrodeAntinodes:pointsofmaximumdisplacementinastationarywave5Atmosphere:aunitofpressureeQualtoI.Olxl0Paor760mmHgAtmosphericpr

6、essure:thepressureatapointduetotheweightoftheaircolumnaboveitAtom:thesmallestpartofanelementthatcanexistnaturallyAtto:aprefixusedinthemetricsystemofunitstodenoteasub-multipleof-18Avogadroconstant:thenumberofatomsìnexactly0.0l2kgofcarbon-l2and2Jhasanumericalvalueof6.02xl0mol-'.Ttisdenote

7、dbyNorLABarometer:adevicethatmeasuresatmosphericpressure-Basequantity;oneofthesevenarbìtrarìlychosenphysìcalquantìtìesthatìsusedtodefìneotherphysicalquantitiesinthe51systemBaseunìt:aunitofbasequantìtythatìsusedtodefìnethe51unitsofotherphysicalquantitiesBoiling:thepr