Path: news.ccsf.jp!tomockey.ddo.jp!border1.nntp.dca.giganews.com!nntp.giganews.com!postnews.google.com!w1g2000prk.googlegroups.com!not-for-mail From: "Ken S. Tucker" Newsgroups: alt.math,alt.math.recreational,japan.sci.math,sci.math,sci.physics Subject: Re: Mach Projectile Date: Thu, 25 Dec 2008 00:37:49 -0800 (PST) Organization: http://groups.google.com Lines: 11 Message-ID: <0d6bda8e-fd23-4a2b-9178-7d02c6fa6e3d@w1g2000prk.googlegroups.com> References: NNTP-Posting-Host: 64.114.48.123 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: posting.google.com 1230194269 24315 127.0.0.1 (25 Dec 2008 08:37:49 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Thu, 25 Dec 2008 08:37:49 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: w1g2000prk.googlegroups.com; posting-host=64.114.48.123; posting-account=c6T4LggAAACAqdk8Zx_zXI_oErOujh3M User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.12) Gecko/20050915 Firefox/1.0.7,gzip(gfe),gzip(gfe) Xref: news.ccsf.jp japan.sci.math:157 On Dec 24, 9:35 pm, "Jon" wrote: > This introduces some of the math involved in predicting where a bullet will > hit before it gets there. Three microphones on a helicopter pick up the > conical shock wave. > > http://mypeoplepc.com/members/jon8338/math/id21.html Man, with your brains, you could do some serious ultrasound engineering, for medical scanning. Regards Ken