HP Forum Archive 20

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Another reference to hyperbolic functions in a movie Message #1 Posted by gene wright on 15 Oct 2011, 10:40 a.m. The image below is from one of my favorite TV movies from 1971, "City Beneath the Sea" by Irwin Allen. Movie info at imdb The circumstances of this screen being shown was discussion about firing nuclear missiles to deflect an incoming asteroid from hitting the earth. The results appear to be in meters. Anyone recognize the formula? No wonder TI put hyperbolics on most of their calculators! They were trying to save the earth! :-)

Re: Another reference to hyperbolic functions in a movie Message #2 Posted by tony(nz) on 15 Oct 2011, 3:34 p.m., in response to message #1 by gene wright Hi Gene, I remember that formula! From Special Relativity. Hyperbolic motion. It must be on wiki, yep - they show the c^2/a. That "Wpp" could be an indication of "warp" - it approaches 1 as the terminal speed approaches c. Oh I found the formula in my old text by Rindler called "Special relativity" published 1966, page 41. Thanks for the memories! Cheers, Tony

Re: Another reference to hyperbolic functions in a movie Message #3 Posted by troy on 15 Oct 2011, 4:00 p.m., in response to message #1 by gene wright whoa! that is one long distance. i haven't seen the movie so don't know what context this was used. but 4.8e17 m is about 50 light years?

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