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Re: Did Nikola Tesla invented the Quantum computer?

From anton@mips.complang.tuwien.ac.at (Anton Ertl)
Newsgroups comp.lang.forth
Subject Re: Did Nikola Tesla invented the Quantum computer?
Date 2016-10-22 16:15 +0000
Organization Institut fuer Computersprachen, Technische Universitaet Wien
Message-ID <2016Oct22.181534@mips.complang.tuwien.ac.at> (permalink)
References (4 earlier) <ceceef06-21d6-4a2e-b31f-a560e69e25ed@googlegroups.com> <4e39079b-de4d-4bb3-9e14-17e14a973e55@googlegroups.com> <nu46mi$80t$1@dont-email.me> <93518ab1-c32e-4b5a-aa25-fa44509faed6@googlegroups.com> <nue39v$d47$2@dont-email.me>

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Bernd Paysan <bernd@net2o.de> writes:
>Am Mon, 17 Oct 2016 22:51:04 -0700 schrieb lawrencedo99:
>
>>> You will get an explosion when the meteor hits the atmosphere and
>>> vaporizes,
>>> but it is not going to be a very big explosion --- the Tunguska Blast
>>> was comparable in force to an atomic bomb --- that is quite a big
>>> wallop, and it remains unexplained.
>> 
>> Feel free to do the numbers.
>
>Ok, let's do some numbers.  Earth escape velocity is 11km/s.  Earth 
>rotation velocity (around the sun) is ~30km/s.  The same speed is needed 
>to escape Sun's gravity (upward, instead of forward), the good thing is 
>that when you launch a rocket from earth, it has that speed forward, and 
>you only need a flyby or two to turn forward speed into upward speed 
>(typical is launch from Earth to Venus and back to earth, which is why 
>there are tight launch windows about twice a year).

Escape velocity is sqrt(2)*orbiting velocity, i.e., Solar escape
velocity is 42km/s from the position of Earth.  Fortunatley, we are
already at 30km/s, so we only need an additional 12km/s (but that's a
big issue when you have already have troubles escaping from Earth's
gravity well.  The direction does not really matter as long as you
avoid colliding with something.  E.g., you could go inwards at 42km/s
relative to the sun, and you would at first get faster, and after
passing the closest spot (perihelion), get slower again, reaching
42km/s again when crossing Earth orbit, and then escaping; the wonders
of a gravity field at work.

Flybys are not mainly used to change direction, but to avoid having to
pay for the extra 12km/s (or more, if you want to reach the outer
solar system faster) all by yourself.  Instead, you exchange impulse
with the planet you fly by, and only need to pay for reaching a close
planet (Venus or Mars).

>But for  a comet, you can expect that it comes in at nearly 30km/s down- 
>or upwards (depending if already passed by sun or not)

Correct that to 42km/s.

- anton
-- 
M. Anton Ertl  http://www.complang.tuwien.ac.at/anton/home.html
comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html
     New standard: http://www.forth200x.org/forth200x.html
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Did Nikola Tesla invented the Quantum computer? Manuel Rodriguez <aa5@gmx.net> - 2016-10-16 05:30 -0700
  Re: Did Nikola Tesla invented the Quantum computer? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-16 15:05 +0200
    Re: Did Nikola Tesla invented the Quantum computer? Manuel Rodriguez <aa5@gmx.net> - 2016-10-16 06:44 -0700
      Re: Did Nikola Tesla invented the Quantum computer? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-16 18:34 +0200
      Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-16 14:17 -0700
    Re: Did Nikola Tesla invented the Quantum computer? JUERGEN <epldfpga@aol.com> - 2016-10-16 09:58 -0700
    Re: Did Nikola Tesla invented the Quantum computer? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-10-16 17:16 -0400
      Re: Did Nikola Tesla invented the Quantum computer? Bernd Paysan <bernd@net2o.de> - 2016-10-17 01:13 +0000
        Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-16 19:36 -0700
        Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-17 17:23 -0700
          Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-17 20:49 -0400
            Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 21:38 -0700
              Re: Did Nikola Tesla invented the Quantum computer? Mark Wills <markwills1970@gmail.com> - 2016-10-18 05:31 -0700
                Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-18 18:34 -0700
                Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-20 19:18 -0400
                Re: Did Nikola Tesla invented the Quantum computer? Cecil Bayona <cbayona@cbayona.com> - 2016-10-20 18:53 -0500
                Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-20 19:17 -0700
                Re: Did Nikola Tesla invented the Quantum computer? Mark Wills <markwills1970@gmail.com> - 2016-10-23 04:58 -0700
                Re: Did Nikola Tesla invented the Quantum computer? Cecil Bayona <cbayona@cbayona.com> - 2016-10-23 11:18 -0500
                Re: Did Nikola Tesla invented the Quantum computer? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-10-27 19:14 -0400
            Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-18 01:11 -0700
              Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-18 05:15 -0400
                Re: Did Nikola Tesla invented the Quantum computer? humptydumpty <ouatubi@gmail.com> - 2016-10-18 11:02 -0700
              Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-18 08:08 -0700
          Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 21:37 -0700
            Re: Did Nikola Tesla invented the Quantum computer? Mark Wills <markwills1970@gmail.com> - 2016-10-18 05:30 -0700
              Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-18 18:33 -0700
              Re: Did Nikola Tesla invented the Quantum computer? Rod Pemberton <NeedNotReplyHere@xrsevnneqk.cem> - 2016-10-19 04:03 -0400
                Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-20 19:16 -0700
                Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-21 17:36 -0700
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-22 22:06 -0700
                Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-22 23:04 -0700
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-23 01:11 -0700
                Re: Did Nikola Tesla invented the Quantum computer? jim <anon@example.com> - 2016-10-23 12:36 +0100
                Re: Did Nikola Tesla invented the Quantum computer? Mark Wills <markwills1970@gmail.com> - 2016-10-23 04:55 -0700
                Re: Did Nikola Tesla invented the Quantum computer? Coos Haak <htrofhc@gmail.com> - 2016-10-23 17:32 +0200
                Re: Did Nikola Tesla invented the Quantum computer? Cecil Bayona <cbayona@cbayona.com> - 2016-10-23 11:19 -0500
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-23 15:41 -0700
                Re: Did Nikola Tesla invented the Quantum computer? Bernd Paysan <bernd@net2o.de> - 2016-11-05 00:48 +0000
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-11-04 19:37 -0700
              Re: Did Nikola Tesla invented the Quantum computer? dunno <dunno@dunno.dunno> - 2016-10-19 22:13 +0000
                Re: Did Nikola Tesla invented the Quantum computer? "Elizabeth D. Rather" <erather@forth.com> - 2016-10-19 13:49 -1000
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-20 21:56 -0700
      Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-16 19:39 -0700
  Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-16 14:17 -0700
  Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-16 18:05 -0700
    Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-16 18:42 -0700
      Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-17 17:09 -0700
        Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-17 18:11 -0700
          Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-17 18:26 -0700
            Re: Did Nikola Tesla invented the Quantum computer? Cecil Bayona <cbayona@cbayona.com> - 2016-10-17 22:59 -0500
              Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-18 01:26 -0400
                Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-18 01:31 -0400
                Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 22:35 -0700
                Re: Did Nikola Tesla invented the Quantum computer? Cecil Bayona <cbayona@cbayona.com> - 2016-10-18 01:10 -0500
                Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 22:34 -0700
                Re: Did Nikola Tesla invented the Quantum computer? dunno <dunno@dunno.dunno> - 2016-10-19 21:27 +0000
              Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-17 22:51 -0700
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-18 00:01 -0700
                Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-18 00:29 -0700
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-18 00:50 -0700
                Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-18 08:04 -0700
                Re: Did Nikola Tesla invented the Quantum computer? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-18 18:56 +0200
                Re: Did Nikola Tesla invented the Quantum computer? Bernd Paysan <bernd@net2o.de> - 2016-10-21 22:02 +0000
                Re: Did Nikola Tesla invented the Quantum computer? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-10-22 16:15 +0000
                Re: Did Nikola Tesla invented the Quantum computer? Bernd Paysan <bernd@net2o.de> - 2016-11-04 21:18 +0000
                Re: Did Nikola Tesla invented the Quantum computer? anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2016-11-04 22:26 +0000
              Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-17 23:56 -0700
            Re: Did Nikola Tesla invented the Quantum computer? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-18 13:02 +0200
              Re: Did Nikola Tesla invented the Quantum computer? Ron Aaron <rambamist@gmail.com> - 2016-10-18 14:34 +0300
                Re: Did Nikola Tesla invented the Quantum computer? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-18 15:33 +0200
                Re: Did Nikola Tesla invented the Quantum computer? Ron Aaron <rambamist@gmail.com> - 2016-10-18 16:38 +0300
        Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 21:36 -0700
    Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-16 22:20 -0400
      Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-16 19:37 -0700
        Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-17 00:18 -0400
      Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-17 15:39 -0700
        Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-17 19:24 -0400
          Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-17 18:21 -0700
            Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-18 02:24 -0400
              Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-18 00:07 -0700
                Re: Did Nikola Tesla invented the Quantum computer? rickman <gnuarm@gmail.com> - 2016-10-19 03:20 -0400
                Re: Did Nikola Tesla invented the Quantum computer? hughaguilar96@gmail.com - 2016-10-20 22:38 -0700
          Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 21:35 -0700
        Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-17 21:35 -0700
        Re: Did Nikola Tesla invented the Quantum computer? dunno <dunno@dunno.dunno> - 2016-10-19 21:27 +0000
    Re: Did Nikola Tesla invented the Quantum computer? polymorph self <jackvanc3@gmail.com> - 2016-10-16 19:35 -0700
  Re: Did Nikola Tesla invented the Quantum computer? lawrencedo99@gmail.com - 2016-10-16 18:45 -0700
    Re: Did Nikola Tesla invented the Quantum computer? Paul Rubin <no.email@nospam.invalid> - 2016-10-16 20:09 -0700
  Re: Did Nikola Tesla invented the Quantum computer? Manuel Rodriguez <aa5@gmx.net> - 2016-10-18 08:23 -0700
    Re: Did Nikola Tesla invented the Quantum computer? albert@cherry.spenarnc.xs4all.nl (Albert van der Horst) - 2016-10-18 19:05 +0200

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