Difference between revisions of "September 4, 2007 - Cosmic Telescope"

Revision as of 15:54, 5 September 2007

Plateau Zeroing
Time Start	Time Stop	Time elapsed (min.)	Thresholds on both Scintillators	Singles Count (on top)	Coinc. Counts	Coinc. per minute	Angle measure
1:35 pm on 8/31	1:10 pm on 9/04	5725 min	225	626816	1654	.2889	75 degrees

Poisson Distribution: standard deviation ([math]\sigma[/math]) = root of the mean ([math]\sqrt{\mu}[/math]); use in counting experiments; the distribtuion approximates the Binomial Distribution for the special case when the mean ([math]\mu[/math]) is a lot less than the number of attempts to measure ([math]n[/math]) because the probability of the event occurrring is small.; In the cosmic ray telescope experiment the mean number of detected cosmic rays is much smaller than the number of cosmic rays passing by.

Instrumental Uncertainty = counts per hour

@@ Line 21: / Line 21: @@
 |}<br>
+;Binomial distribtuion
+; best example is a coin toss, its either heads or tails
 ; Poisson Distribution
 : standard deviation (<math>\sigma</math>) = root of the mean (<math>\sqrt{\mu}</math>)
 : use in counting experiments
-: the distribtuion approximated the Binomial Distribution for the special case when the mean (<math>\mu</math>) is a lot less than the number of attempts to measure (<math>n</math>) because the probability of the event occurrring is small.
+: the distribtuion approximates the Binomial Distribution for the special case when the mean (<math>\mu</math>) is a lot less than the number of attempts to measure (<math>n</math>) because the probability of the event occurrring is small.
 : In the cosmic ray telescope experiment the mean number of detected cosmic rays is much smaller than the number of cosmic rays passing by.