Physics307L:People/Knockel/Notebook/071107: Difference between revisions
From OpenWetWare
Jump to navigationJump to search
(New page: = Speed of light! = Experimentalists: us ==Goal== All light travels at the same constant speed. We want to measure that speed by seeing how the time of travel varies over distance. Me...) |
No edit summary |
||
| Line 1: | Line 1: | ||
= Speed of light! = | = Speed of light! = | ||
| Line 9: | Line 8: | ||
== Equipment == | == Equipment == | ||
[[Image:Physics 307L Speed of light1.JPG|thumb| | [[Image:Physics 307L Speed of light1.JPG|thumb|Here is our high voltage power supply for the PMT (left), our delay box (center), and the TAC (right).|none]] | ||
==Setup== | ==Setup== | ||
==Procedure== | ==Procedure== | ||
Revision as of 09:43, 8 November 2007
Speed of light!
Experimentalists: us
Goal
All light travels at the same constant speed. We want to measure that speed by seeing how the time of travel varies over distance. Measuring this time is difficult since light moves 3/10 of a meter every nanosecond. Luckily! We have a very sensitive time-to-amplitude converter (TAC) that converts a time interval to a voltage (the voltage is proportional to the time interval).
Equipment
