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Re: energy and mass

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Am Montag000023, 23.03.2026 um 18:32 schrieb john larkin:
...
>>>>>> So, now I'm kind of expert on that article of Einstein.
>>>>>
>>>>> You are obsessed with it, which isn't quite the same thing.
>>>>
>>>> No. I follow a certain principle, which I regard as necessary for proper
>>>> learning.
>>>>
>>>> It is actually better to become a specialist in a very narrow realm than
>>>> to have some knowledge about lots of things.
>>>
>>> Not if you want to design things that actually work. Electronic design
>>> involves the basic physics-electromagnetics principles, mechanical
>>> design, thermal design, human/aesthetic/ui concepts, software, logic
>>> design, signals-and-systems, PCB design, finding and understanding
>>> parts, understanding the users' physics and problems, documentation,
>>> manufacturing, and the economics of the whole thing.
>>>
>>> Plus is needs common sense to keep all the above under control and get
>>> it done and all right.
>>>
>>
>> Sure, technicians and engineers need good understanding of the
>> principles they use.
>>
>> But engineers do not care that much about what physicists actually do or
>> worry about.
> 
> Physicists are great. They have interesting problems, need help with
> the electronics, and often have a lot of money to spend.
> 
>>
>> Engineers worry about their machines and simply do not care, whether or
>> not physics would allow them to work.
> 
> If the physics is wrong, it won't work.

I'm actually an engineer and can assure you, that most engineers don't 
care about what physicist do.

> 
>>
>> If it works, than it's ok. If it doesn't work, engineers try some
>> modifications or something else.
> 
> Duh.

Yes, because most engineers love to tinker around with 'toys for adults'.

>>
>> But engineers do not care much about WHY the machines actually work.
>> (They leave that part to physicsts.)
> 
> Nobody can see all the way down the abstraction stack, not even
> physicists. They don't know where the universe came from or how it
> actually works.

Well, I actually can (at least I've tried).

So, have a look at my 'book':

https://docs.google.com/presentation/d/1Ur3_giuk2l439fxUa8QHX4wTDxBEaM6lOlgVUa0cFU4/edit?usp=sharing


> Both engineers and physicists work with whatever thay can get.

Yes, the borders are thin between both realms.

But physics is actually a natural science and engineers are mainly 
concerned with what they have built themselves.


> The thing I like about desiging electronics is the many things it
> involves, and the fact that we can be done in months and move on to
> something else that's interesting.

Only a small part of engineering is dealing with electronics.

Engineers exist in several 'flavors', which range from building bridges 
to chemistry.
...


TH

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Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-17 08:42 +0100
  Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-17 23:34 +1100
    Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-19 11:32 +0100
      Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-20 00:05 +1100
        Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-19 14:34 +0100
        Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-20 10:45 +0100
          Re: energy and mass john larkin <jl@glen--canyon.com> - 2026-03-20 04:21 -0700
            Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-21 09:28 +0100
              Re: energy and mass john larkin <jl@glen--canyon.com> - 2026-03-23 10:32 -0700
                Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-25 09:10 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-25 21:31 +1100
                Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-26 14:33 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-27 02:03 +1100
                Re: energy and mass Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-03-26 09:33 -0700
                Re: energy and mass Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-03-26 09:49 -0700
                Re: energy and mass Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-03-26 10:26 -0700
                Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-27 09:25 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-28 16:23 +1100
                Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-29 10:24 +0200
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-29 20:55 +1100
                Re: energy and mass Flavio Schuhart <ifuaofvs@thl.de> - 2026-03-29 12:59 +0000
                Re: energy and mass john larkin <jl@glen--canyon.com> - 2026-03-25 07:20 -0700
          Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-21 01:19 +1100
            Re: energy and mass nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-20 22:43 +0100
              Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-21 16:01 +1100
                Re: energy and mass Gerhard Hoffmann <dk4xp@arcor.de> - 2026-03-21 11:59 +0100
                Re: energy and mass nospam@de-ster.demon.nl (J. J. Lodder) - 2026-03-21 13:26 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-22 02:16 +1100
  Re: energy and mass Thomas Heger <ttt_heg@web.de> - 2026-03-19 11:01 +0100
    Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-20 00:40 +1100
      Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-19 14:45 +0100
        Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-20 16:57 +1100
          Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-20 07:06 +0100
            Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-20 18:55 +1100
              Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-20 10:11 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-21 01:43 +1100
                Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-20 17:03 +0100
                Re: energy and mass Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-03-20 09:28 -0700
                Re: energy and mass Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-03-20 09:35 -0700
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-21 16:08 +1100
                Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-21 06:28 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-21 18:26 +1100
                Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-21 09:57 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-22 02:02 +1100
                Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-21 16:21 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-22 05:50 +1100
                Re: energy and mass Maciej Woźniak <mlwozniak@wp.pl> - 2026-03-21 20:24 +0100
                Re: energy and mass Bill Sloman <bill.sloman@ieee.org> - 2026-03-22 16:42 +1100
      Re: energy and mass Ross Finlayson <ross.a.finlayson@gmail.com> - 2026-03-19 06:56 -0700
      Re: energy and mass Donovan Rocca <onon@nanna.it> - 2026-03-19 20:31 +0000
        Re: energy and mass Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2026-03-20 01:40 +0100

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