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- Newsgroups: sci.astro
- Path: sparky!uunet!gumby!destroyer!cs.ubc.ca!newsserver.sfu.ca!news
- From: palmer@sfu.ca (Leigh Palmer)
- Subject: Re: Distance of horizon
- Message-ID: <1992Nov19.021430.13833@sfu.ca>
- Sender: news@sfu.ca
- Organization: Simon Fraser University
- References: <lglhj3INNb0c@appserv.Eng.Sun.COM>
- Date: Thu, 19 Nov 1992 02:14:30 GMT
- Lines: 23
-
- In article <lglhj3INNb0c@appserv.Eng.Sun.COM> fiddler@concertina.Eng.Sun.COM
- (steve hix) writes:
- >Anyone have handy a function for figuring the distance of the
- >horizon from a viewer based on the viewer's height from the
- >surface?
- -1
- Try d = R arccos ( 1 + h/R )
-
- d = horizon distance
- h = height above MSL (assuming horizon is at sea level)
- R = radius of Earth
-
- I tried to find a series expansion for arccos ( 1 + z ) in my tables, but there
- ain't one there. I think I see how to figure one out, but I've got to go home
- now.
-
- >This has to do with amusing my kids a bit during our next
- >science discussion. Dad's got to stay ahead *some* way... :}
-
- I'm tickled to be able to say I know exactly what you mean. Ain't that a great
- problem to have?
-
- Leigh
-