Can we detect a blueshift of –c?
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From: artful on 21 Apr 2010 22:32 On Apr 22, 10:56 am, Brad Guth <bradg...(a)gmail.com> wrote: > On Apr 21, 5:41 pm, artful <artful...(a)hotmail.com> wrote: > > > On Apr 22, 10:35 am, 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? > > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > > Nothing with mass can have a speed of c .. so your question is not > > valid. But if it was travelling fast enough, its light would be > > Doppler shifted to beyond the visible spectrum .. but then, and lower > > frequency EMR from it could be shifted into the visible spectrum. > > We're told by our peers that the outer parts of our universe is likely > expanding/receding at c, There is nothing massive there moving away at c .. the edge that one could consider as expanding at c has no mass. > as sort of leaving us in its photon dust that > we'll never detect. > > Stop avoiding the truth-seeking context or intent of my topic. I'm not > LHC proves that matter can be artificially directed towards other > matter at a closing velocity of <2c. Irrelevant .. nothing with mass can move at c (or greater relative to another object. That one can have two object both moving just under c toward (or away) from each other having a vector difference in their velocity approaching 2c does NOT mean that one has a speed of >c relative to the other. You need to understand the difference between closing speed (the difference in speeds between two objects in some frame) and the speed of a single object in a frame.
From: artful on 21 Apr 2010 22:33 On Apr 22, 11:25 am, Brad Guth <bradg...(a)gmail.com> wrote: > On Apr 21, 6:15 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > > > > On Apr 21, 5:56 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > On Apr 21, 5:41 pm, artful <artful...(a)hotmail.com> wrote: > > > > > On Apr 22, 10:35 am, 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? > > > > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > > > > Nothing with mass can have a speed of c .. so your question is not > > > > valid. But if it was travelling fast enough, its light would be > > > > Doppler shifted to beyond the visible spectrum .. but then, and lower > > > > frequency EMR from it could be shifted into the visible spectrum. > > > > We're told by our peers that the outer parts of our universe is likely > > > expanding/receding at c, as sort of leaving us in its photon dust that > > > we'll never detect. > > > > Stop avoiding the truth-seeking context or intent of my topic. > > > > LHC proves that matter can be artificially directed towards other > > > matter at a closing velocity of <2c. > > > > ~ BG > > > Increased strength of gravity blueshifts light from its fundamental by > > gravity Gamma factor. > > > Mitch Raemsch > > Are you suggesting gravity has the same velocity as photons? > > I thought gravity was worth at least 2c. SR would say gravity 'moves' at c.
From: artful on 21 Apr 2010 22:34 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]
From: artful on 21 Apr 2010 22:34 On Apr 22, 12:17 pm, Brad Guth <bradg...(a)gmail.com> wrote: > On Apr 21, 6:59 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > > > > On Apr 21, 6:25 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > On Apr 21, 6:15 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > > On Apr 21, 5:56 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > > > On Apr 21, 5:41 pm, artful <artful...(a)hotmail.com> wrote: > > > > > > > On Apr 22, 10:35 am, 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? > > > > > > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > > > > > > Nothing with mass can have a speed of c .. so your question is not > > > > > > valid. But if it was travelling fast enough, its light would be > > > > > > Doppler shifted to beyond the visible spectrum .. but then, and lower > > > > > > frequency EMR from it could be shifted into the visible spectrum. > > > > > > We're told by our peers that the outer parts of our universe is likely > > > > > expanding/receding at c, as sort of leaving us in its photon dust that > > > > > we'll never detect. > > > > > > Stop avoiding the truth-seeking context or intent of my topic. > > > > > > LHC proves that matter can be artificially directed towards other > > > > > matter at a closing velocity of <2c. > > > > > > ~ BG > > > > > Increased strength of gravity blueshifts light from its fundamental by > > > > gravity Gamma factor. > > > > > Mitch Raemsch > > > > Are you suggesting gravity has the same velocity as photons? > > > > I thought gravity was worth at least 2c. > > > > ~ BG- Hide quoted text - > > > > - Show quoted text - > > > Two light waves traveling toward one another (in a gravity) would > > converge on a center at 2C. > > > Mitch Raemsch > > That seems likely, but even if each were making a velocity towards the > other at .5c for a closing velocity of c, could we as one item detect > the other? > > ~ BG Why not ?
From: palsing on 21 Apr 2010 22:43
On Apr 21, 7:17 pm, Brad Guth <bradg...(a)gmail.com> wrote: > On Apr 21, 6:59 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > > > > On Apr 21, 6:25 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > On Apr 21, 6:15 pm, BURT <macromi...(a)yahoo.com> wrote: > > > > > On Apr 21, 5:56 pm, Brad Guth <bradg...(a)gmail.com> wrote: > > > > > > On Apr 21, 5:41 pm, artful <artful...(a)hotmail.com> wrote: > > > > > > > On Apr 22, 10:35 am, 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? > > > > > > > > Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / Guth Usenet > > > > > > > Nothing with mass can have a speed of c .. so your question is not > > > > > > valid. But if it was travelling fast enough, its light would be > > > > > > Doppler shifted to beyond the visible spectrum .. but then, and lower > > > > > > frequency EMR from it could be shifted into the visible spectrum. > > > > > > We're told by our peers that the outer parts of our universe is likely > > > > > expanding/receding at c, as sort of leaving us in its photon dust that > > > > > we'll never detect. > > > > > > Stop avoiding the truth-seeking context or intent of my topic. > > > > > > LHC proves that matter can be artificially directed towards other > > > > > matter at a closing velocity of <2c. > > > > > > ~ BG > > > > > Increased strength of gravity blueshifts light from its fundamental by > > > > gravity Gamma factor. > > > > > Mitch Raemsch > > > > Are you suggesting gravity has the same velocity as photons? > > > > I thought gravity was worth at least 2c. > > > > ~ BG- Hide quoted text - > > > > - Show quoted text - > > > Two light waves traveling toward one another (in a gravity) would > > converge on a center at 2C. > > > Mitch Raemsch > > That seems likely, but even if each were making a velocity towards the > other at .5c for a closing velocity of c, could we as one item detect > the other? > > ~ BG Do you 2 just make this stuff up as you go along? Your collective knowledge of physics is quite diminutive. |