NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Dip-meter again
From: Alexandre Eremenko
Date: 2012 Mar 29, 22:20 -0400
From: Alexandre Eremenko
Date: 2012 Mar 29, 22:20 -0400
Lars, Yes, it does. The principle seems to be the same in all 3 devices discussed: 3 prisms or mirrors of which one rotates. Two prisms reflect the two almost horizontal rays to vertical rays, and the third one reflects both to a horizontal ray that is perpendicular to the first two. (After some thinking, I believe that the Soviet version also must have 3 of prisms/mirrors. The problem is how exactly you arrange the parts together to achieve high accuracy and easy adjustments. The differences between the US and Soviet devices are in the way the movable mirror is rotated. Alex. On Thu, 29 Mar 2012, Lars Bergman wrote: > > Maybe this article, from (the British) Journal of Navigation, 1950, vol. 3, number 3, can be of interest. It contains, among other things, a description of the principle of Pulfrich's dip meter. > > Lars, 59N 18E > ---------------------------------------------------------------- > NavList message boards and member settings: www.fer3.com/NavList > Members may optionally receive posts by email. > To cancel email delivery, send a message to NoMail[at]fer3.com > ---------------------------------------------------------------- > >File:> > > > > > : http://fer3.com/arc/m2.aspx?i=118569 > > >
