This is more of a physics question than electronics, but I figured I'd post to see if anyone knew anyway. The question concerns Fizeau's method of the speed of light using a wheel with various teeth. The formula is c = 2d/t where t = delta theta/ w; where c is the speed of light, d is the distance between the wheel and light source and t is time measured using the number of teeth and angular speed (w).
The question I am trying to solve uses 720 teeth and asks for the minimal angular speed to correctly determine the speed of light to be 3 x10e8 at a distance of 11.45 km. I was wondering if the delta theta is 1/(2 * # of teeth) or it is always 1/720, cause my textbook seems to contradict itself in that sense and it is confusing me, also the internet has not been much help in the issue.
Thanks
The question I am trying to solve uses 720 teeth and asks for the minimal angular speed to correctly determine the speed of light to be 3 x10e8 at a distance of 11.45 km. I was wondering if the delta theta is 1/(2 * # of teeth) or it is always 1/720, cause my textbook seems to contradict itself in that sense and it is confusing me, also the internet has not been much help in the issue.
Thanks