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c isn't fast enough for some people.
originally posted by: BASSPLYR
a reply to: Erno86
If the ship has no mass then why do you need some wacky propulsion system? Just fart out the back and that should instantly push it to C wherever C's goalposts are set at.
originally posted by: Arbitrageur
c isn't fast enough for some people.
Getting the mass to zero is hard enough, but to go faster than c, zero mass isn't good enough, you have to get it below zero. But that's imposs.....oops, I'm trying to not use that word and keep an open mind.
There are gamma rays hitting the atmosphere? They can't be causing much of a glow from sources other than the sun or you'd see that at night, so that leaves the sun. I think it produces gamma rays in the core, but they don't escape, so normally there aren't many gamma rays from the sun either, the exception being from solar flares. So you could try looking when there's a solar flare but the prospects of seeing a blue glow against the background of a blue sky seem dim. The more spectacular effects reported in solar flares or storm events are people seeing the aurorae at lower latitudes than normal, most notably during the Carrington event:
originally posted by: Tearman
2 questions:
Can Cherenkov radiation caused by gamma rays hitting the atmosphere be seen with the eye?
On September 1–2, 1859, one of the largest recorded geomagnetic storms (as recorded by ground-based magnetometers) occurred. Aurorae were seen around the world, those in the northern hemisphere as far south as the Caribbean; those over the Rocky Mountains in the U.S. were so bright that their glow awoke gold miners, who began preparing breakfast because they thought it was morning.[5] People in the northeastern United States could read a newspaper by the aurora's light.[7] The aurora was visible as far from the poles as Sub-Saharan Africa (Senegal, Mauritania, perhaps Monrovia, Liberia), Monterrey and Tampico in Mexico, Queensland, Cuba and Hawaii.
Let's examine Jupiter's orbit for an example. All the planets but especially Jupiter cause the sun to wobble a tiny bit as they both orbit their common barycenter, or "center of mass". The barycenter which the sun and Jupiter both orbit is 742,000 km from the center of the sun, while the sun has a radius of 696,000 km so the sun-Jupiter barycenter is just above the surface of the sun.
When a black hole is gravitationally attracted toward another mass, what part of the black hole exactly is moving and how?
Yes but folding space time like folding a sheet of paper would allow you to travel at less than the speed of light though wormholes, which might be theoretically less impossible than changing the speed of light. Bending space-time is something we theoretically know how to do, changing the speed of light in a vacuum isn't, is it?
originally posted by: Poon
See, if we could find a mechanism to increase the speed of light we'd bypass the zero / infinite mass problem.
And probably get a Nobel prize!
originally posted by: Phage
a reply to: BASSPLYR
No need.
Light pressure from a nearby star would send you on your merry way quite nicely.
"Push the button, pull the switch, cut the beam, make it march!"
Libby drive. Except he didn't eliminate mass, just inertia.
I'm not sure what you base that wager on, but I have no idea how to do either one.
originally posted by: Poon
I'd wager though that increasing the speed of light is theoretically less impossible than mass travelling at the speed of light!
I'm talking about cosmic rays. Or the gamma rays suspected to be emmitted by primordial black holes (if they exist).
originally posted by: Arbitrageur
There are gamma rays hitting the atmosphere?
originally posted by: Tearman
2 questions:
Can Cherenkov radiation caused by gamma rays hitting the atmosphere be seen with the eye?
Let's examine Jupiter's orbit for an example. All the planets but especially Jupiter cause the sun to wobble a tiny bit as they both orbit their common barycenter, or "center of mass". The barycenter which the sun and Jupiter both orbit is 742,000 km from the center of the sun, while the sun has a radius of 696,000 km so the sun-Jupiter barycenter is just above the surface of the sun.
When a black hole is gravitationally attracted toward another mass, what part of the black hole exactly is moving and how?
Now imagine replacing the sun with a black hole of the same mass. Jupiter and the black hole would do the same dance as before orbiting the same barycenter, located 742,000 km from the center of the black hole. The black hole doesn't really have a "surface", but we can calculate an event horizon for a hypothetical solar mass black hole which has a radius just under 3 km. We don't have a good model yet for what exactly is inside the event horizon of the black hole, but we wouldn't need to know that to say that Jupiter and the solar mass black hole would orbit their common barycenter about the same way if you replaced the sun with a black hole of the same mass.
originally posted by: BASSPLYR
a reply to: Erno86
If the ship has no mass then why do you need some wacky propulsion system? Just fart out the back and that should instantly push it to C wherever C's goalposts are set at.
originally posted by: BASSPLYR
Erno86 ,
So you're saying there is a shell around the ship in the form of some unique mag field but that the test mass inside isn't effected. Well hows that mass going to go superluminal without being a PART of the field and within it's influences. I'm confused.
No, you're not talking about cosmic rays if you're asking about gamma rays. "Cosmic rays" is a misnomer, they're not "rays", not X-rays or gamma rays, they are particles. Searches for radiation from primordial black holes have not found them.
originally posted by: Tearman
I'm talking about cosmic rays. Or the gamma rays suspected to be emmitted by primordial black holes (if they exist).
According to relativity it's the stress energy tensor which can be mass, energy or non-gravitational force fields, which results in gravitational attraction.
I thought it was the matter that is attracted by gravity. But the matter that formed the black hole ceased to exist as far as I understand it.
To some extent yes. There are many correct statements so it's not all quackery, but this statement is about 99.99999999.....999% wrong:
originally posted by: BASSPLYR
So I wanna know from physicists and engineers is this quackery?
The reason it's not 100% wrong is some miniscule amount of the Earth's gravity actually does come from electric and magnetic fields as explained in this video, which also explains that it's not very much, maybe something like 0.00000000000001% or probably less than that, I haven't tried to calculate it exactly. But I know that the speed of light squared is a huge number and the Earth has a lot of mass so when you multiply those big numbers that's what gives you most of the Earth's gravity, and compared to that the Earth's magnetic field is relatively weak as far as generating gravity goes.
“Gravity Conclusions (cont)” the accelerating force commonly called “gravity’ seems to be the resultant force generated from the interaction (F= E x B) of the earth’s electric and magnetic fields.
Sorry to interrupt your rant about charged particles, but the primary reason for building the LHC was to detect the Higgs boson which has no charge.
Tracking devices
Tracking devices reveal the paths of electrically charged particles as they pass through and interact with suitable substances....
Calorimeters
A calorimeter measures the energy a particle loses as it passes through. It is usually designed to stop entirely or “absorb” most of the particles coming from a collision, forcing them to deposit all of their energy within the detector....
Electromagnetic calorimeters measure the energy of electrons and photons as they interact with the electrically charged particles in matter.
Hadronic calorimeters sample the energy of hadrons (...) as they interact with atomic nuclei.
Particle-identification detectors
Once a particle has passed through the tracking devices and the calorimeters, physicists have two further methods of narrowing down its identity. Both methods work by detecting radiation emitted by charged particles. When a charged particle travels faster than light does through a given medium, it emits Cherenkov radiation at an angle that depends on its velocity.
Sorry KrzYma... but no... just 100% nope you get Zero points, and we are all worse off having read this rambling. We have tried to explain things, your responses are just to say "WAVES! EM!" it means... not very much except to point out you do not have any idea of how the LHC searches are conducted.
"I have no idea how the detectors work, because they are complicated... and it is so complex that i dont understand it and thus it is BS"
originally posted by: Poon
In theory If you replicated the casimir effect experiment with 2 parallel plates a couple of nm apart and fired x-rays, say, down the middle could you increase c by increasing vacuum permittivity?
And could you test this experimentally by manufacturing a looong tube with a 2 nm hole down the centre which you send x-rays through?
Yes but folding space time like folding a sheet of paper would allow you to travel at less than the speed of light though wormholes, which might be theoretically less impossible than changing the speed of light. Bending space-time is something we theoretically know how to do, changing the speed of light in a vacuum isn't, is it?