Thomas Stoltz wrote: > There seems to be two major methods of defining the angle, one uses an > isosceles triangle, the other a right triangle. > > Does anyone know which is considered more correct?
Tom et al -- It's not a matter of opinion. It's the isosceles trangle. The frog number equals one (1) divided by twice the tangent of half the angle. This can be confirmed by consulting any prototype turnout-dimension table. Example: A #5 turnout has a frog angle of 11 degrees 25 minutes 16 seconds (11.42111 degrees). Using the right-triangle method, this turnout's number would be 4.95. Using the isosceles method, it's 5.0000 -- the actual frog number. Please be aware, however, that, for practical purposes, choice of method makes no discernable difference unless you're dealing with frog numbers less than 4. Dick Karnes Change your membership, change your message settings, use our CALENDAR, view shared files or photos, view the list archives, GO TO http://groups.yahoo.com/group/S-Scale/ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
