The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: How precisely can a right angle be measured?
Replies: 6   Last Post: Apr 6, 2013 2:47 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Tom Potter

Posts: 497
Registered: 8/9/06
Re: How precisely can a right angle be measured?
Posted: Apr 6, 2013 10:03 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

"1treePetrifiedForestLane" <> wrote in message
> proper units in diadians, since any angle from it to a point
> on the sphere is "right;" also,
> a certain kind of chord establishes a quadrirectangular tetrtahedron
> with the diameter.
> I assume taht their is a sort of interferometry that is associated
> with a "cube-corner" retroreflector,
> which can be used to gauge the "rightness" of the corner. note,
> however,
> that there are no "right trigona" in a spatial sense,
> whilst there are enantiamorphic "right & left" tetrtahedra,
> the quadrirectangular ones.

>> and what units are the deviations from a right angle in?

They are not measured,
the deviations are removed using with the complex conjugate.

Tom Potter

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.