Physics307L:People/Knockel/Notebook/070926: Difference between revisions
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(New page: =Electron's e/m Ratio= Experimentalists: Nik, where are you? ==Goal== ==Equipment== thumb|All the equipment setup correctly.|right *2 weak direct cur...) |
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==Setup== | ==Setup== | ||
=== | ===To plug everything in I...=== | ||
*acquired The Device! | *acquired The Device! | ||
*plugged in the three power supplies into the wall and the two multimeters | *plugged in the three power supplies into the wall and the two multimeters | ||
| Line 24: | Line 24: | ||
*plugged in the large power supply to power the electrodes of the electron gun using banana plugs, and turned it on so that about 300V are applied | *plugged in the large power supply to power the electrodes of the electron gun using banana plugs, and turned it on so that about 300V are applied | ||
*connected a multimeter to the Helmholtz device to measure voltage across electrodes | *connected a multimeter to the Helmholtz device to measure voltage across electrodes | ||
=== | ===To adjust the electron beam I...=== | ||
#turned off lights | #turned off lights | ||
#waited for heater to heat up | #waited for heater to heat up | ||
| Line 30: | Line 30: | ||
#rotated the vacuum tube so the helix became a circle | #rotated the vacuum tube so the helix became a circle | ||
==Procedure== | ==My Procedure== | ||
I sat on my ass and took some sample data. | |||
Revision as of 15:07, 26 September 2007
Electron's e/m Ratio
Experimentalists: Nik, where are you?
Goal
Equipment
- 2 weak direct current power supplies (10V and 2A are the max outputs needed)
- 1 strong direct current power supply (500V needed)
- 2 multimeters
- banana plugs
- The Device!
- Helmholtz coils
- Vacuum tube with helium gas and electron gun inside
- Mirror with ticks for measuring length
- Black covering to block out light
Setup
To plug everything in I...
- acquired The Device!
- plugged in the three power supplies into the wall and the two multimeters
- connected one of the weak power supplies into the heater for the electron gun with banana plugs and turned it on not exceeding 6.3V
- plugged in the other weak power supply into the Helmholtz coils using banana plugs, but intercepted the circuit to connect a multimeter in series to measure current, and then turned on the power to the Helmholtz coils and multimeter so there were about 2 amps flowing
- plugged in the large power supply to power the electrodes of the electron gun using banana plugs, and turned it on so that about 300V are applied
- connected a multimeter to the Helmholtz device to measure voltage across electrodes
To adjust the electron beam I...
- turned off lights
- waited for heater to heat up
- adjusted voltage to electrodes and current to Helmholtz coils so that the beam made a heliz
- rotated the vacuum tube so the helix became a circle
My Procedure
I sat on my ass and took some sample data.
