Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.physics > #702393
| From | moroney@world.std.spaamtrap.com (Michael Moroney) |
|---|---|
| Newsgroups | sci.math, sci.physics |
| Subject | Re: Archimedes "Total Failure" Plutonium flunked the Math Test of a lifetime-generation test |
| Date | 2018-09-13 03:04 +0000 |
| Organization | The World : www.TheWorld.com : Since 1989 |
| Message-ID | <pnck3b$q93$4@pcls7.std.com> (permalink) |
| References | <c2b22e80-6d68-43b3-a538-33b5dcecc48a@googlegroups.com> <71ab6d54-82de-4647-a2f3-af23f553438e@googlegroups.com> |
Cross-posted to 2 groups.
Math Failure Archimedes Plutonium <plutonium.archimedes@gmail.com> fails:
>On Wednesday, September 12, 2018
>Dan Christensen writes:
>7:55 AM (1 hour ago)
>>WARNING TO STUDENTS:
>AP writes: pretty stupid of John Conway to never admit the ellipse is never
>a conic, always a cylinder section,
Did I hear ellipse? Here you are!!
Below you will find a simple *proof* that shows that certain conic
sections are ellipses.
Some preliminaries:
Top view of the conic section and depiction of the coordinate system used
in the proof:
^ x
|
-+- <= x=h
.' | `.
. | .
| | |
' | '
`. | .'
y <----------+ <= x=0
Cone (side view):
.
/|\
/ | \
/b | \
/---+---' <= x = h
/ |' \
/ ' | \
/ ' | \
x = 0 => '-------+-------\
/ a | \
Proof:
r(x) = a - ((a-b)/h)x and d(x) = a - ((a+b)/h)x, hence
y(x)^2 = r(x)^2 - d(x)^2 = ab - ab(2x/h - 1)^2 = ab(1 - 4(x - h/2)^2/h^2.
Hence (1/ab)y(x)^2 + (4/h^2)(x - h/2)^2 = 1 ...equation of an ellipse
qed
Back to sci.physics | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-08-26 11:41 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-08-29 13:13 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-03 18:22 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-06 19:47 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Henrietta Foreskineater <invalid@example.com> - 2018-09-07 07:37 -0700
Warren S. Warren, Harold Baranger of Duke Univ, boring and stupid??Richard L. McElroy, never wanting to consider and admit the Real Electron=muon, Real Proton=840MeV, Dirac's monopole=.5MeV Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-07 10:52 -0700
Steffen Bass,Robert Behringer of Duke Univ, boring and stupid?? Richard L. McElroy, never wanting to consider and admit the Real Electron=muon, Real Proton=840MeV, Dirac's monopole=.5MeV Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-07 12:08 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-09 15:10 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-12 19:30 -0700
Re: Archimedes "Total Failure" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-09-13 03:04 +0000
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-16 15:27 -0700
Re: page1 TRUE CHEMISTRY-- 2018 Re: Edward Witten flunked the Physics lifelong-generation Test Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-20 14:13 -0700
Re: Archimedes "Total Failure" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-09-20 22:57 +0000
kibo-shein-stalkershitparade-Moroney loves AP's theory that Starpower is really just Faraday Law acting inside atoms. Does Hale Bradt, Bernard Burke, George Clark, Douglas Finkbeiner, Melissa Franklin love it also? Archimedes Plutonium <plutonium.archimedes@gmail.com> - 2018-09-25 01:30 -0700
Re: Archimedes "Total Failure" Plutonium flunked the Math Test of a lifetime-generation test moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-09-25 12:52 +0000
csiph-web