Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Thomas Heger Newsgroups: sci.physics.relativity,sci.electronics.design Subject: Re: energy and mass Date: Thu, 26 Mar 2026 14:33:52 +0100 Lines: 49 Message-ID: References: <10orpc4$13e80$1@dont-email.me> <1rrwmiq.1wswrxu1eydtaN%nospam@de-ster.demon.nl> <10p42s3$a44n$10@dont-email.me> <10pbhp2$2tdk0$1@dont-email.me> <10pgsad$mp47$2@dont-email.me> <2maqrkdah2i7c7phmlikom206f0162salb@4ax.com> <10q0dj5$1r9os$2@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: individual.net CvSppQ2tOUJxOOmi0VaBNgzoZF2eEkDaoyXM1gdXzo/j2cpA4V Cancel-Lock: sha1:asE8ThIkq6YbGOPXQCRrzoA9kZ8= sha256:MnrCL6qANUPh+dS899yNWiZ6uKVz8m4hv7z3zUVu4ww= User-Agent: Mozilla Thunderbird Content-Language: de-DE In-Reply-To: <10q0dj5$1r9os$2@dont-email.me> Xref: csiph.com sci.physics.relativity:670483 sci.electronics.design:742305 Am Mittwoch000025, 25.03.2026 um 11:31 schrieb Bill Sloman: ... >>> 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 > > Don't bother. > >>> Both engineers and physicists work with whatever they 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. >> ... > > And you don't know much about any of them. > Sure, I have never build a bridge. But I know a few things about electronics and chemistry. My specific 'flavour' is called 'economics engineering'. It is kind of mixture of economics and building machines. That is quite difficult and not a very common topic in other countries. (It's among the 'crown jewels' of German education.) TH