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Groups > sci.physics > #712865 > unrolled thread

What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Started byKeith Stein <keithstein111@gmail.com>
First post2018-11-15 17:17 +0000
Last post2018-11-21 13:50 -0600
Articles 4 on this page of 24 — 12 participants

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  What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Keith Stein <keithstein111@gmail.com> - 2018-11-15 17:17 +0000
    Re:What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-15 19:54 +0100
      Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-15 20:32 +0100
        Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Shon Wible <shwn@shouve.wd> - 2018-11-16 20:22 +0000
        Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Sergio <invalid@invalid.com> - 2018-11-19 17:26 -0600
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Lochù Umská <lare@cpi2alwa.cc> - 2018-11-19 23:35 +0000
            Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Sergio <invalid@invalid.com> - 2018-11-19 22:05 -0600
              Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Elden Lathan <an@tnettw.ea> - 2018-11-22 19:25 +0000
          Gravitational waves (was: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-20 03:11 +0100
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Tom Roberts <tjroberts137@sbcglobal.net> - 2018-11-19 22:23 -0600
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< benj <benj.fake@gmail.com> - 2018-11-20 11:46 -0500
            Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-20 21:26 +0100
            Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Tom Roberts <tjroberts137@sbcglobal.net> - 2018-11-20 15:51 -0600
              Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Paul Edgar <lara@uldewan.lg> - 2018-11-21 18:12 +0000
                Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Sergio <invalid@invalid.com> - 2018-11-21 13:43 -0600
      Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Keith Stein <keithstein111@gmail.com> - 2018-11-15 20:54 +0000
        Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Sergio <invalid@invalid.com> - 2018-11-19 21:57 -0600
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-20 09:16 +0100
            Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-11-20 17:48 +0000
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Keith Stein <keithstein111@gmail.com> - 2018-11-20 12:47 +0000
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Sergio <invalid@invalid.com> - 2018-11-20 10:01 -0600
        Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Edward Prochak <edprochak@gmail.com> - 2018-11-20 08:22 -0800
          Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< benj <benj.fake@gmail.com> - 2018-11-20 12:10 -0500
            Re: What Every Physicist Needs to Know..............<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Sergio <invalid@invalid.com> - 2018-11-21 13:50 -0600

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#713497

FromSergio <invalid@invalid.com>
Date2018-11-20 10:01 -0600
Message-ID<pt1b5b$14jg$1@gioia.aioe.org>
In reply to#713467
On 11/19/2018 9:57 PM, Sergio wrote:
> On 11/15/2018 2:54 PM, Keith Stein wrote:
>> On 15/11/2018 18:54, Libor Striz wrote:
>>> Keith Stein <keithstein111@gmail.com> Wrote in message:
>>>> How to Program a Computer eh!
>>>
>>> They have programmers for that.
>>
>> But what you are completely missing Mr.Striz
>> is just how very much easier physics is, when
>> you know how to program a computer. You need
>> to learn to think like a computer, Mr.Striz.
> 
> na,
> computers think in binary, 1's and 0's and they have an accumulator,
> that is about it, everything else is support.
> 
>    64 bit ? means 64 bit wide accumulator
> 
> 
>>>
>> HOW WOULD A COMPUTER SOLVE THE PROBLEM eh!
> 


walk back into ancient history;

64 bit is the size of the data bus, the width of the data word, which is
directly dependent on the size of accummulator or regester.

remember ?
4 bit  (nibble)
8 bit (one byte)
16 bit  (double byte)
32 bit   (systems mostly before windows xp)
64 bit


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#713500

FromEdward Prochak <edprochak@gmail.com>
Date2018-11-20 08:22 -0800
Message-ID<40bf5384-7503-4d62-8bad-ce18821fad13@googlegroups.com>
In reply to#712892
On Thursday, November 15, 2018 at 3:54:51 PM UTC-5, Keith Stein wrote:
> On 15/11/2018 18:54, Libor Striz wrote:
> > Keith Stein <keithstein111@gmail.com> Wrote in message:
> >> How to Program a Computer eh!
> > 
> > They have programmers for that.
> 
> But what you are completely missing Mr.Striz
> is just how very much easier physics is, when
> you know how to program a computer. You need
> to learn to think like a computer, Mr.Striz.
> > 
> HOW WOULD A COMPUTER SOLVE THE PROBLEM eh!

First off, computers don't solve problems.
They compute only based on the instructions
and data provided.

Second, I am curious. What justification do you
have for this remark? Did Newton, Kepler,
Copernicus need computers? Did Einstein, Bohr,
Heisenberg need computers? Please explain.

Please note, Physics majors have been taught programming
since at least the 1970's. so you are not suggesting a
new idea in the Physics curriculum, eh!

Ed

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#713517

Frombenj <benj.fake@gmail.com>
Date2018-11-20 12:10 -0500
Message-ID<pt1f72$1cgv$1@gioia.aioe.org>
In reply to#713500
On 11/20/2018 11:22 AM, Edward Prochak wrote:
> On Thursday, November 15, 2018 at 3:54:51 PM UTC-5, Keith Stein wrote:
>> On 15/11/2018 18:54, Libor Striz wrote:
>>> Keith Stein <keithstein111@gmail.com> Wrote in message:
>>>> How to Program a Computer eh!
>>>
>>> They have programmers for that.
>>
>> But what you are completely missing Mr.Striz
>> is just how very much easier physics is, when
>> you know how to program a computer. You need
>> to learn to think like a computer, Mr.Striz.
>>>
>> HOW WOULD A COMPUTER SOLVE THE PROBLEM eh!
> 
> First off, computers don't solve problems.
> They compute only based on the instructions
> and data provided.

Of course they do. They calculate answers to "problems" that have been 
posed to them, but they do not create theories.

> Second, I am curious. What justification do you
> have for this remark? Did Newton, Kepler,
> Copernicus need computers? Did Einstein, Bohr,
> Heisenberg need computers? Please explain.

Well, hell yes they did. What's your idea? They went to Dephi and got a 
reading to get their theories?  It makes NO difference if one does 
calculations with a pencil (pen) and paper as did old timers or if one 
uses a machine to do the work. It's only a matter of speed and degree.

> Please note, Physics majors have been taught programming
> since at least the 1970's. so you are not suggesting a
> new idea in the Physics curriculum, eh!

Longer than that. Slide rules are computers too. Pen and paper is 
computing too. Computer "programming" is actually irrelevant to physics 
because you only need the results, you don't need to know how to program 
it yourself anymore than you need to know how to run a lathe if you want 
a cylindrical piece of aluminum. Do they have shop courses in physics 
curriculum?

Ed, clearly you have obviously thought about none of this stuff.

> Ed
> 

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#713791

FromSergio <invalid@invalid.com>
Date2018-11-21 13:50 -0600
Message-ID<pt4cui$bdu$1@gioia.aioe.org>
In reply to#713517
On 11/20/2018 11:10 AM, benj wrote:
> On 11/20/2018 11:22 AM, Edward Prochak wrote:
>> On Thursday, November 15, 2018 at 3:54:51 PM UTC-5, Keith Stein wrote:
>>> On 15/11/2018 18:54, Libor Striz wrote:
>>>> Keith Stein <keithstein111@gmail.com> Wrote in message:
>>>>> How to Program a Computer eh!
>>>>
>>>> They have programmers for that.
>>>
>>> But what you are completely missing Mr.Striz
>>> is just how very much easier physics is, when
>>> you know how to program a computer. You need
>>> to learn to think like a computer, Mr.Striz.
>>>>
>>> HOW WOULD A COMPUTER SOLVE THE PROBLEM eh!
>>
>> First off, computers don't solve problems.
>> They compute only based on the instructions
>> and data provided.
> 
> Of course they do. They calculate answers to "problems" that have been
> posed to them, but they do not create theories.
> 
>> Second, I am curious. What justification do you
>> have for this remark? Did Newton, Kepler,
>> Copernicus need computers? Did Einstein, Bohr,
>> Heisenberg need computers? Please explain.
> 
> Well, hell yes they did. What's your idea? They went to Dephi and got a
> reading to get their theories?  It makes NO difference if one does
> calculations with a pencil (pen) and paper as did old timers or if one
> uses a machine to do the work. It's only a matter of speed and degree.
> 
>> Please note, Physics majors have been taught programming
>> since at least the 1970's. so you are not suggesting a
>> new idea in the Physics curriculum, eh!
> 
> Longer than that. Slide rules are computers too. Pen and paper is
> computing too. Computer "programming" is actually irrelevant to physics
> because you only need the results, you don't need to know how to program
> it yourself anymore than you need to know how to run a lathe if you want
> a cylindrical piece of aluminum. Do they have shop courses in physics
> curriculum?
> 
> Ed, clearly you have obviously thought about none of this stuff.
> 
>> Ed
>>
> 

with bigger slide rules can you can get 64 bit precision...



bonus question:

how much bigger ?

take a 18 inch picket, you can get about 6 digits of mantissa
(significand) if you have great eyesight,
6 digits is 48 bit

how much bigger does the slide rule have to be to get to 64 bit ?
(assuming same eyesight)


[ yea, on campus they used to call us lizards, back then ]

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