Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Thomas Heger Newsgroups: sci.physics.relativity Subject: Re: Rate of Change Date: Mon, 4 Aug 2025 09:06:32 +0200 Lines: 47 Message-ID: References: <1rg4uk5.1fd5qswwm0a8cN%nospam@de-ster.demon.nl> <18562738277d93aa$635416$2135381$c2565adb@news.newsdemon.com> <106dvj1$3dd0o$1@dont-email.me> <106giv6$985$2@dont-email.me> <106j86t$kd1q$2@dont-email.me> <106km6v$vq91$1@dont-email.me> <106oh5o$1ptoq$1@dont-email.me> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net jq3mCrImWLqBaXoROUyExQuDlsEh//FGrbX0PJIwioaYBxLTla Cancel-Lock: sha1:Fu8SROCBVTrK9RJDNOtKX/sq7ds= sha256:/lPT5M2MmALFxjy7ZP2VwfsCmeYBTHEGorCmbymGtCE= User-Agent: Mozilla Thunderbird Content-Language: de-DE In-Reply-To: Xref: csiph.com sci.physics.relativity:665390 Am Montag000004, 04.08.2025 um 07:05 schrieb The Starmaker: ... >>> Devices belong to a realm, which is not nature. I would prefer to call >>> that 'engineering'. >>> >>> Physicists use all sorts of devices, but would not necessarily build them. >>> >>>>> >>>>> This is usually called 'engineering'. >>>> >>>> OK, let me reformulate: >>>> >>>> 1. Do you think that "time" must be measurable to have >>>>     a meaning in engineering? >>>> >>>> 2. What is the instrument that engineers use to measures time? >>> >>> Physicists use clocks of various forms, technology and size. >>> >>> But time does not use clocks! >>> >>> This is so, because time is a natural phenomenon and nature does not use >>> any man-made devices. >>> >>> TH >> >> You have still not even tried to answer my questions: >> >> 1. Do you think that "time" must be measurable to have >> a meaning in engineering? >> >> 2. What is the instrument that engineers use to measures time? > > > They all use the sun as the instrument. It will be ready on Sunday. > check your calender...when you wake up, change the page on your > calender to the next day. All clocks give solar time. Actually wrong, because the apparent movement of the Sun across the sky is caused by Earth' rotation. So: sun dials use the Earth' rotation, too. ... TH