Groups > comp.lang.forth > #52097

Re: Did Nikola Tesla invented the Quantum computer?

From	Bernd Paysan <bernd@net2o.de>
Newsgroups	comp.lang.forth
Subject	Re: Did Nikola Tesla invented the Quantum computer?
Date	2016-10-21 22:02 +0000
Organization	A noiseless patient Spider
Message-ID	<nue39v$d47$2@dont-email.me> (permalink)
References	(3 earlier) <26de540c-dac0-4847-b65a-5ab947d0be80@googlegroups.com> <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>

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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).

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), and mostly 
perpendicular to earth's orbit.  That makes on average about 42km/s vs. 
earth (the actual velocity depends on other things like the actual angle 
the comet or asteroid is flying in, how far it gets out and things like 
that, it is an estimate).  And you have to add those 11km/s worth of 
energy to it, because earth's gravity will accelerate the comet even 
further, not by much, just you have now 43.4km/s.  So give or take 
something, you expect in the order of 40km/s for the speed delta of the 
comet vs. earth.  Energy is E=1/2 mv². One kiloton TNT is ~4.2TJ (J=kg m²/
s²).  You need around 5.25 metric tons of meteorite or comet mass per 
kiloton TNT equivalent. The estimate is 10-15 MT TNT, so the estimated 
mass of the meteorite is at least around 50Gg (50k metric tons). Assuming 
dense ice, I get that with a diameter of at least 45m, assuming iron (10 
times as heavy), around 21m diameter.  The assumption here is that the 
comet or asteroid entering earth's atmosphere is turning its kinetic 
energy into heat to evaporate, and there is no remaining speed left after 
it did so: all kinetic energy is transferred into heat.

Real ice comets are not very dense (can be down to ~0.1g/cm³, the Rosetta 
mission suggests even less), not even the iron asteroids are that dense, 
so a more realistic estimate is between 30m and 80m diameter, depending 
on the material.

-- 
Bernd Paysan
"If you want it done right, you have to do it yourself"
net2o ID: kQusJzA;7*?t=uy@X}1GWr!+0qqp_Cn176t4(dQ*
http://bernd-paysan.de/

Thread

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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