Physics307L:People/Phillips/Photoelectric

From OpenWetWare

(Difference between revisions)
Jump to: navigation, search
(Data & Results)
(Data & Results)
Line 9: Line 9:
We came up with many different value for Planck's constant. We obtained two from the first order maxima from the light source, each being a separate run through the colors:
We came up with many different value for Planck's constant. We obtained two from the first order maxima from the light source, each being a separate run through the colors:
-
<math>h^{1}_{first order} = (6.911 \pm .087) \cdot 10^{-34}~\mathrm{J}\cdot\mathrm{s} = </math>
+
<math>h^{1}_{first order} = (6.911 \pm .087) \times 10^{-34}~\mathrm{J}\cdot\mathrm{s} = (4.319 \pm .054) \times 10^{-15}~\mathrm{eV}\cdot\mathrm{s}</math>

Revision as of 19:23, 6 December 2008

Photoelectric Effect (Planck's Constant) Summary

Data & Results

The notebook entry for this lab is located here. We generated two Excel files for this lab as well: Planck.xlsx and First Order.xlsx.

We measured two different things in this lab related to the photoelectric effect, but only one of these has an accepted value - Planck's Constant. This value is

h_{acc} = 6.626\,068\,96(33) \times 10^{-34}~\mathrm{J}\cdot\mathrm{s} = 4.135\,667\,33(10) \times 10^{-15}~\mathrm{eV}\cdot\mathrm{s}

We came up with many different value for Planck's constant. We obtained two from the first order maxima from the light source, each being a separate run through the colors:

h^{1}_{first order} = (6.911 \pm .087) \times 10^{-34}~\mathrm{J}\cdot\mathrm{s} = (4.319 \pm .054) \times 10^{-15}~\mathrm{eV}\cdot\mathrm{s}

Personal tools