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Re: How precisely can a right angle be measured?
Posted:
Apr 4, 2013 3:11 AM


"pete" <pfiland@mindspring.com> wrote in message news:515C5712.746@mindspring.com... > Tom Potter wrote: >> >> How would one measure a right angle >> without using geometry, >> or the 345 relationship, >> >> and how precisely can a right angle be measured? > > I place a straight edge > approximately perpendicular to a straight line, > and then I maneuver the edge to make adjacent angles > of equal size. > > It's very easy to accurately compare adjacent angles. > > I can't state the precission. > >  > pete
Okay, let's assume that a laser beam is a "straight line" over the range of interest,
and let us "place a straight <laser beam> approximately perpendicular to <the> straight line,"
and juggle the "approximately perpendicular straight line" until the "adjacent angles" are equal,
how do we compare the "adjacent angles"?
 Tom Potter
http://thecloudmachine.tk http://tiny.im/390k



