Pasco SE-9638 e-m APPARATUS User Manual

012-03471EPhone (916) 786-3800  FAX (916) 786-8905  web: www.pasco.com10101 Foothills Blvd.  Roseville, CA 95678-9011 USA®betterteach scienceways t

5012-03471E e/m Apparatus®Voltmeter(0-300 VDC)DC Ammeter(0-2 A)Power Supply(6-9 VDC,ripple < 1%)Current Adjustfor Helmholtz CoilsHelmholtz CoilsHea

6e/m Apparatus 012-03471E®Measurement of e/mNotes1) The greatest source of error in this experiment is the velocity of the electrons. First, the non-u

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012-03471D e/m ApparatusiTable of ContentsSection PageCopyright, Warranty, and Equipment Return ... ii

e/m Apparatus 012-03471E®iiCopyright NoticeThe PASCO scientific Model SE-9638 e/m Apparatusmanual is copyrighted and all rights reserved. However,per

012-03471D e/m ApparatusTechnical SupportContacting Technical SupportBefore you call the PASCO Technical Support staff itwould be helpful to prepare t

1012-03471E e/m Apparatus®IntroductionThe PASCO Model SE-9638 e/m Apparatus provides asimple method for measuring e/m, the charge to mass ratioof the

2e/m Apparatus 012-03471E®The Helmholtz Coils—The geometry of Helmholtz coils—the radius of the coils is equal to their separation—providesa highly un

3012-03471E e/m Apparatus®Current adjust knobfor Helmholtz coilsFocus knobPower Supply(Heater6.3 VDC orVAC)Power Supply(AcceleratingVoltage150-300 VDC

4e/m Apparatus 012-03471E®where:V = the accelerating potentiala = the radius of the Helmholtz coilsN = the number of turns on each Helmholtz coil = 13