Well made pendulums and mechanical clockworks give far better resolution of time than you might think. Consider a day of 84600 seconds, pendulum clocks can consistently give time within a second a day...that's a resolution of 1/84600 = 0.00001182. so we're talking about millionths. It takes only...
Thanks for your reply. I am building a precision pendulum complete with data logging to try to measure these microscopic gravitational changes. This was done once before in the '80s using an old astronomical pendulum from the 1920s. He collected a month or two of data, then fft'd and it showed 6...
I would like to know a function or at least an approach toward developing a function that describes the change of gravity on the Earth's surface due to the sun, moon and if possible, the tides.
I am quite familiar with the fundamentals but my math isn't up to this.
Thanks in advance...
I appreciate seeing and getting quality responses to my post. But I'm still in the dark regarding red shift - how does the wavelength get changed without a corresponding change in velocity? Isn't wavelength essentially defined with velocity as a factor? Maybe I'm just too grounded in the...
I've read with interest the posts on this subject, and as an old engineer (and not a physicist) the question of red shift has bothered me for some months. If the speed of light is truly a universal constant, then it seems to me that doppler-type shifting of light isn't possible when dealing with...