Can we detect a blueshift of –c?
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From: BURT on 22 Apr 2010 00:50 On Apr 21, 9:22 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > On 4/21/10 7:35 PM, Brad Guth wrote: > > > In other words, if something substantial (such as a 10 solar mass > > super-star and its tidal swarm of Jupiter+ planets) was headed as > > seemingly directly towards us at c (-299.8e3 km/sec), could that item > > regardless of its size, mass and vibrance be detected? > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > I though you knew that mass cannot move at c for any inertial > observer. Your question makes no sense given that c is the > cosmic speed limit. How does light reach light speed? It doesn't accelerate so it must be pushed in some way. Mitch Raemsch
From: Brad Guth on 22 Apr 2010 01:41 On Apr 21, 9:22 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > On 4/21/10 7:35 PM, Brad Guth wrote: > > > In other words, if something substantial (such as a 10 solar mass > > super-star and its tidal swarm of Jupiter+ planets) was headed as > > seemingly directly towards us at c (-299.8e3 km/sec), could that item > > regardless of its size, mass and vibrance be detected? > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > I though you knew that mass cannot move at c for any inertial > observer. Your question makes no sense given that c is the > cosmic speed limit. In other words, you don't understand the question. Should any parts or items of our universe be collapsing towards us at c, could we detect it? ~ BG
From: Brad Guth on 22 Apr 2010 01:44 On Apr 21, 9:50 pm, BURT <macromi...(a)yahoo.com> wrote: > On Apr 21, 9:22 pm, Sam Wormley <sworml...(a)gmail.com> wrote: > > > On 4/21/10 7:35 PM, Brad Guth wrote: > > > > In other words, if something substantial (such as a 10 solar mass > > > super-star and its tidal swarm of Jupiter+ planets) was headed as > > > seemingly directly towards us at c (-299.8e3 km/sec), could that item > > > regardless of its size, mass and vibrance be detected? > > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > > I though you knew that mass cannot move at c for any inertial > > observer. Your question makes no sense given that c is the > > cosmic speed limit. > > How does light reach light speed? > > It doesn't accelerate so it must be pushed in some way. > > Mitch Raemsch Don't confuse our mainstream parrots and brown-nosed clowns with deductive logic. Just keep asking them; should any parts or items of our universe be collapsing towards us at c, could we detect it? ~ BG
From: Brad Guth on 22 Apr 2010 01:46 On Apr 21, 7:34 pm, artful <artful...(a)hotmail.com> wrote: > On Apr 22, 11:56 am, Brad Guth <bradg...(a)gmail.com> wrote: > > > > > On Apr 21, 6:12 pm, dlzc <dl...(a)cox.net> wrote: > > > > Dear Brad Guth: > > > > On Apr 21, 5:35 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > > In other words, if something substantial (such as a 10 > > > > solar mass super-star and its tidal swarm of Jupiter+ > > > > planets) was headed as seemingly directly towards us > > > > at c (-299.8e3 km/sec), could that item regardless of > > > > its size, mass and vibrance be detected? > > > > I'll assume just a tad under light speed... > > > > There would be a glowing path of destruction in its wake, and even > > > more energetic particles leading it. There are very few directions > > > that would not show its passage towards us. > > > > Note that the blue shift would make even a brown dwarf into something > > > quite bright, and deadly. > > > > David A. Smith > > > Yes, but a closing velocity of -c means we wouldn't detect the fast > > moving item itself, > > You mean a speed of c relative to us .. that cannot happen > > [snip conclusions from incorrect assumption] In other words, you simply don't understand the question. Should any parts or items of our universe be collapsing towards us at c, could we detect it? ~ BG
From: Sam Wormley on 22 Apr 2010 01:47
On 4/22/10 12:41 AM, Brad Guth wrote: > On Apr 21, 9:22 pm, Sam Wormley<sworml...(a)gmail.com> wrote: >> On 4/21/10 7:35 PM, Brad Guth wrote: >> >>> In other words, if something substantial (such as a 10 solar mass >>> super-star and its tidal swarm of Jupiter+ planets) was headed as >>> seemingly directly towards us at �c (-299.8e3 km/sec), could that item >>> regardless of its size, mass and vibrance be detected? >> >>> Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / �Guth Usenet� >> >> I though you knew that mass cannot move at c for any inertial >> observer. Your question makes no sense given that c is the >> cosmic speed limit. > > In other words, you don't understand the question. > > Should any parts or items of our universe be collapsing towards us at � > c, could we detect it? > > ~ BG Everywhere we look the universe is expanding. No Center http://www.astro.ucla.edu/~wright/nocenter.html http://www.astro.ucla.edu/~wright/infpoint.html Also see Ned Wright's Cosmology Tutorial http://www.astro.ucla.edu/~wright/cosmolog.htm http://www.astro.ucla.edu/~wright/cosmology_faq.html http://www.astro.ucla.edu/~wright/CosmoCalc.html WMAP: Foundations of the Big Bang theory http://map.gsfc.nasa.gov/m_uni.html WMAP: Tests of Big Bang Cosmology http://map.gsfc.nasa.gov/m_uni/uni_101bbtest.html |