Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.physics.relativity > #479209
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | sci.physics.relativity |
| Subject | Re: the famous formula |
| Date | 2018-12-06 22:16 +0100 |
| Organization | PointedEars Software (PES) |
| Message-ID | <71a5b809-72ef-a11b-36d8-69fc58febfcf@PointedEars.de> (permalink) |
| References | <79b9b14b-3010-4875-9394-6d0269270fbe@googlegroups.com> |
RichD wrote: > Everybody knows E = mc², and figures it's well understood. > I disagree. It all depends on what '=' means. It means what it means in mathematics: The left-hand side is *equal* to the right-hand side. (This works because energy can have units of [mass] × [speed]². Consider, e.g., Newtonian kinetic energy T = ½ m v².) Only that you either wrote the left-hand side wrong or used a deprecated concept for mass m (“relativistic mass”). You should have written E₀ = m c² or E = m_rel c² instead. > By analogy, […] You cannot understand this by (armchair) philosophy. Give it up while you still can, and learn the underlying mathematics instead. It is really not very hard. Most symbols used in physics have physical meaning. You cannot understand physics without understanding the underlying concepts (here: energy, mass, and speed) and mathematics (here: 1+3-dimensional pseudo-Euclidean differential geometry) *first*. -- PointedEars Twitter: @PointedEars2 Please do not cc me. / Bitte keine Kopien per E-Mail.
Back to sci.physics.relativity | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
the famous formula RichD <r_delaney2001@yahoo.com> - 2018-12-06 10:49 -0800
Re: the famous formula pnalsing@gmail.com - 2018-12-06 11:30 -0800
Re: the famous formula dlzc <dlzc1@cox.net> - 2018-12-06 11:43 -0800
Re: the famous formula RichD <r_delaney2001@yahoo.com> - 2018-12-07 10:15 -0800
Re: the famous formula dlzc <dlzc1@cox.net> - 2018-12-07 11:13 -0800
Re: the famous formula RichD <r_delaney2001@yahoo.com> - 2018-12-09 00:02 -0800
Re: the famous formula dlzc <dlzc1@cox.net> - 2018-12-09 15:23 -0800
Re: the famous formula Libor Striz <poutnik@privacy.net> - 2018-12-10 09:54 +0100
Re: the famous formula dlzc <dlzc1@cox.net> - 2018-12-10 05:43 -0800
Re: the famous formula Tom Roberts <tjroberts137@sbcglobal.net> - 2018-12-12 11:08 -0600
Re: the famous formula dlzc <dlzc1@cox.net> - 2018-12-12 09:35 -0800
Re: the famous formula Rich Carpenter <lcug@kigcohc.pa> - 2018-12-12 19:20 +0000
Re: the famous formula Tom Roberts <tjroberts137@sbcglobal.net> - 2018-12-12 19:28 -0600
Re: the famous formula Scott Richman <sunn@idhnonow.iv> - 2018-12-13 16:13 +0000
Re: the famous formula "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-12-14 04:56 -0800
Re: the famous formula "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-12-14 05:23 -0800
Re: the famous formula Tom Roberts <tjroberts137@sbcglobal.net> - 2018-12-12 10:28 -0600
Re: the famous formula dlzc <dlzc1@cox.net> - 2018-12-12 09:12 -0800
Re: the famous formula Tom Roberts <tjroberts137@sbcglobal.net> - 2018-12-14 12:21 -0600
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-06 20:50 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-06 22:47 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-07 12:06 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-07 16:15 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-08 14:18 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-08 13:43 +0000
Re: the famous formula "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-12-08 06:01 -0800
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-08 18:18 +0100
Re: the famous formula Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-08 19:26 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-09 19:35 +0100
Re: the famous formula Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-09 20:24 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-10 18:48 +0100
Re: the famous formula Rich Carpenter <lcug@kigcohc.pa> - 2018-12-10 19:37 +0000
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-10 22:27 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-10 22:35 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-12 16:45 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-13 17:21 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-09 19:03 +0100
Re: the famous formula Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-09 20:37 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-09 22:20 +0000
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-10 18:40 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-10 21:59 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-10 21:41 +0000
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-11 16:31 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-11 18:24 +0000
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-12 16:32 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-12 16:27 +0000
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-14 15:13 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-14 14:28 +0000
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-15 13:35 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-15 13:52 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-15 19:50 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-15 20:33 +0000
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-15 22:02 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-15 12:55 +0000
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-13 23:14 +0100
[OT] Work (was: the famous formula) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-11 21:56 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-08 20:14 +0100
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-09 19:22 +0100
Re: the famous formula Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-07 17:57 +0100
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-08 14:03 +0100
Re: the famous formula Gary Harnagel <hitlong@yahoo.com> - 2018-12-08 05:29 -0800
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-08 18:43 +0100
[OT] Work (was: the famous formula) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-08 21:53 +0100
Re: [OT] Work Thomas Heger <ttt_heg@web.de> - 2018-12-09 19:08 +0100
Re: [OT] Work Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-09 19:31 +0100
Re: [OT] Work Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-09 18:58 +0100
Re: [OT] Work Thomas Heger <ttt_heg@web.de> - 2018-12-10 18:52 +0100
Re: [OT] Work Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-10 22:28 +0100
Re: [OT] Work Thomas Heger <ttt_heg@web.de> - 2018-12-11 16:36 +0100
Re: [OT] Work Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-11 20:24 +0100
Re: the famous formula Gary Harnagel <hitlong@yahoo.com> - 2018-12-08 14:02 -0800
Re: the famous formula Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-08 16:56 +0100
Re: the famous formula Ejí Utorka <edew@aewedoc.cl> - 2018-12-08 16:05 +0000
Re: the famous formula Thomas Heger <ttt_heg@web.de> - 2018-12-08 18:35 +0100
Re: the famous formula Ejí Utorka <edew@aewedoc.cl> - 2018-12-08 17:58 +0000
Re: the famous formula Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com.INVALID> - 2018-12-08 19:34 +0100
Re: the famous formula Ejí Utorka <edew@aewedoc.cl> - 2018-12-08 18:54 +0000
Re: the famous formula Ejí Utorka <edew@aewedoc.cl> - 2018-12-08 16:09 +0000
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-06 22:16 +0100
Re: the famous formula Odd Bodkin <bodkinodd@gmail.com> - 2018-12-07 16:07 +0000
Re: the famous formula Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-12-07 22:47 +0100
Re: the famous formula "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2018-12-09 15:06 -0800
Re: the famous formula benj <benj.fake@gmail.com> - 2018-12-12 13:44 -0500
csiph-web