PASCO SE-9638 Скачать руководство пользователя страница 10 | Manualshive

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PASCO SE-9638 Скачать руководство пользователя страница 10

5

012-03471E

e/m Apparatus

!

Voltmeter

(0-300 VDC)

DC Ammeter

(0-2 A)

Power Supply

(6-9 VDC,

ripple < 1%)

Current Adjust

for Helmholtz Coils

Helmholtz Coils

Heater

Grid

Anode

Deflection

Plates

e/m Tube

Cathode

Power

Supply

Heater

Voltage

150-300 VDC

Focus Adjust

Variable

Resistor

Slide/Toggle Switch

(e/m MEASURE

⁄

ELECTRICAL DEFLECT)

+

-

+

+

-

-

- +

+

Upper

Lower

+

+

-

-

-

BLK

BLK

WHT

YEL

BLK

ORG

ORG

WHT

RED

ORG

15K

15W

5K

5

ý

BLK
BLK

BLU

pin 1

pin 2

pin 6

pin 10

YEL

pin 12

pin 11

Diagram of Connections for the

SE-9638 e/m Apparatus

«
...
8
9
10
11
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Содержание SE-9638

Страница 1: ...1 234 05 1 6 78 6669 9 0 0 2 AA BACD9 1 E C AA F G3 5 0 HI3 7 J 6 K Instruction Manual and Experiment Guide for the PASCO scientific Model SE 9638 Includes Teacher s Notes and Typical Experiment Results e m APPARATUS ...

Страница 2: ...e m Apparatus 012 03471E Discard This Page ...

Страница 3: ...Copyright Warranty and Equipment Return ii Introduction 1 Equipment 1 Operation Measuring e m 2 Analysis of e m Measurement 3 Deflections of Electrons in an Electric Field 4 Two Simple Demonstrations 4 Diagram of Connections 5 Improving Experimental Results 6 ...

Страница 4: ...r the units must be packed properly Carriers will not accept responsibility for damage caused by improper packing To be certain the unit will not be damaged in shipment observe the following rules 1 The carton must be strong enough for the item shipped 2 Make certain there is at least two inches of packing material between any point on the apparatus and the inside walls of the carton 3 Make certai...

Страница 5: ...u can t call PASCO right away you won t lose valuable data If possible have the apparatus within reach when calling This makes descriptions of individual parts much easier If your problem relates to the instruction manual note Part number and Revision listed by month and year on the front cover Have the manual at hand to discuss your questions Feed Back If you have any comments about this product ...

Страница 6: ...egrees with respect to the magnetic field from the Helmholtz coils You can therefore rotate the tube and examine the vector nature of the magnetic forces on moving charged particles Other experiments are also possible with e m tube Helmholtz coils Controls Figure 1 The e m Apparatus Equipment the e m tube For example you can use a small permanent magnet instead of the Helmholtz coils to investigat...

Страница 7: ...re accelerat ing potential such as the PASCO Model SB 9624 Multimeter Operation Measuring e m 1 If you will be working in a lighted room place the hood over the e m apparatus 2 Flip the toggle switch up to the e m MEASURE position 3 Turn the current adjust knob for the Helmholtz coils to the OFF position 4 Connect your power supplies and meters to the front panel of the e m apparatus as shown in F...

Страница 8: ...arge of the electron Since the electrons are moving in a circle they must be experiencing a centripetal force of magnitude Fc mv2 r 2 where m is the mass of the electron v is its velocity and r is the radius of the circular motion Since the only force acting on the electrons is that caused by the magnetic field Fm Fc so equations 1 and 2 can be combined to give evB mv2 r or e m v Br 3 Therefore in...

Страница 9: ... HEATER and 150 300 VDC to the ELEC TRODES of the ELECTRON GUN the accelerating potential Wait ten minutes to warm up the cathode 3 When the electron beam appears slowly increase the voltage to the deflection plates from 0 V to approxmately 50 VDC Note the deflection of the electron beam Note that the beam is bent towards the positively charged plate Two Simple Demonstrations 1 Instead of using th...

Страница 10: ...eater Grid Anode Deflection Plates e m Tube Cathode Power Supply Heater Voltage 150 300 VDC Focus Adjust Variable Resistor Slide Toggle Switch e m MEASURE ELECTRICAL DEFLECT Upper Lower BLK BLK WHT YEL BLK ORG ORG WHT RED ORG 15K 15W 5K 5 ý BLK BLK BLU pin 1 pin 2 pin 6 pin 10 YEL pin 12 pin 11 Diagram of Connections for the SE 9638 e m Apparatus ...

Страница 11: ... due to this lost electron velocity measure radius to the outside of the beam path 3 To minimize the relative effect of collisions keep the accelerating voltage as high as possible Above 250V for best results Note however that if the voltage is too high the radius measurement will be distorted by the curvature of the glass at the edge of the tube Our best results were made with radii of less than ...

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