Recent content by bobnstar

Thank you for the reply, and the well wishes. I was thinking that the hourglass is timed by grains of sand passing through a narrow orifice, and only the grain passing through the orifice is in free fall. I thought that perhaps granular flow, and whether the reduced gravity might reduce the...

Will a sand-filled hourglass flow faster, slower, or the same on the moon as it does here on earth?