On Sat, Dec 1, 2018 at 6:59 PM Brent Meeker <meeke...@verizon.net> wrote:
> *But an ocean wave many feet high would change the gravitational field > less than would moving a centimeter relative to the Earth's center of mass.* Not so. In 1798 technology was good enough for Cavendish to measure the gravitational attraction between 2 cannonballs a few inches apart (and by doing so determine the value of the Gravitational Constant) but until a few months ago no technology was good enough to measure the difference in strength of a gravitational field that was 637,000,000 centimeters from the center of the Earth and one that was 637,000,001 centimeters from the center of the Earth. But the technology is good enough now thanks to this new clock. And this isn't the end of the line for clock technology, nobody has made one yet but a Thorium Nuclear Clock would be even more accurate. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
