Physics307L F09:People/Trujillo/LAB NOTEBOOK/071017

second week =Plank's Constant=

Equipment and setup
battery outputs +8.70 -8.69

First Group:

 * First blue 2.075V
 * Second blue 1.721V
 * Third blue 1.505V
 * Green/yellow 1.025V
 * Orange/yellow 1.062

Second Group:

 * First blue 2.065V
 * Second blue 1.732V
 * Third blue 1.570V
 * Green/yellow 1.754V
 * Orange/yellow 1.587V

First Group
1Blue
 * 100%-2.085V-3.5s
 * 80%-2.0785-2.5s
 * 60-2.0785-4.5s
 * 40-2.0785-3.5s
 * 20-2.0785-3.5s

Suggestion For Tmprovement
Tomas and I figured that an O-Scope would work better for timing rather then a stop watch. With some trial and error we were able to make some accurate timing measurements by calculating the 10 and 90% of the expecting bias voltage then used markers to determine the time it took for the voltage to reach the 90% mark. This makes the lab a bit more time consuming but timing measurement were improved by about 30%.