lab2 - Chris Lawson Chemistry Lab 2 Discovery of the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chris Lawson Chemistry Lab 2 Discovery of the Electron 9/13/06 The purpose of this lab is to perform the experiment that J.J. Thomson did in 1897 to discover the electrons charge to mass ratio. First, I turned on the filament so that the electron beam hit the fluorescent screen. Then, I turned on the electron field. When setting the value of the electron field, the concentration of red electrons moved to -0.0374 m. By turning the magnetic field level to -0.113G, the red sport went back to 0m. Seeing that the magnetic field unit was gauss(G), I had to change it to an SI unit. The corresponding SI unit is the telsa(T), whereas 1T=10,000G. Then, I substituted the distance the beam was deflected for y. Then, I substituted E for the electric field and B for the magnetic field. Using L, which equals .10m, the length of the deflecting plate and equation x=2.0m for the distance, I found the mass ration of the electron(q/m). It looked like this: q/m = -0.0374 m(15 V/m) ....
View Full Document

This note was uploaded on 04/08/2008 for the course CHEM 1065 taught by Professor Gtyee during the Fall '07 term at Virginia Tech.

Page1 / 2

lab2 - Chris Lawson Chemistry Lab 2 Discovery of the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online