Hi Didier and all,
This is because the gravitational force is perpendicular to the velocity
(at least for a circular orbit), so the result is a change only in the
direction of the velocity, not the magnitude. For an elliptical orbit, the
satellite speeds up and slows down when the gravity force
Hi Chuck,
The French tried that about 1794-1795 (normal calendar year dates). Each
month (still 12 months/year) was to have 3 ten day weeks.
Each day was to be 10 hours of 100 minutes of 100 seconds.
I have discovered there is often more to systems of units than conversion
of units. For example,
Hi all,
I just realized that a meter is defined by the speed of light., see
http://physics.nist.gov/cuu/Units/meter.html
It is only to 9 significant digits, so if the speed of light (in some
controlled environment) is measured more precisely than this, the meter and
all other derived length units
Hi all,
I have a run-of-the-mill frequency counter (8 digits, 0.1 and 1.0 sec gate,
no reference oscillator output or ext. input) and would like to upgrade to
something better. I would initially like to measure frequencies in the 10
MHz or below range with a resolution of better than 0.1 Hz.
From
