how much closer would you like to get...lol.... still waiting on the weight of light please

If you substitute the functions of the speed of light into the gravity equations you get simple math showing the approximate radius for the event horizon.



Note that it is just the distance from the black hole where light can no longer escape. It doesn't have any other unusual properties. Note that the radius calculated is not totally correct because the formula is Newtonian and the applied physics are actually Einsteinian. The accurate solution to the problem is the Schwarzschild Radius calculated by Karl Schwarzschild in 1916 from Einstein's field theory. The solution is different for a spinning black hole which describes most black holes.

Since an observer watching another object fall into the event horizon has a relative difference in velocity equal to the speed of light, time will appear to stop at the event horizon for the outside observer but would be unaffected to the perception of the object entering the event horizon.

are you still flying ships pass each other..lol

Here is a link to the math of time dilation. It also gives the diameter of event horizons, etc.

http://essayweb.net/astronomy/calculations/mathematica/schwarzschild_radius/blackhole.html

We "see" time dilation every time you use your GPS.

come on man make your point this isn't rocket science...hmmm. wait a minute maybe it is just a little bit..ok.. putting my ball gag back on.lol

Uhm metalwing, could you kindly explain to me how you "see" time dilatation in our GPS. Im quite confused. Thank you.

Time dilation is just a property of time as Einstein related time, force, gravity, speed, and distance in both Special Relativity and General Relativity (which includes gravity). Time stretches in relation to speed and gravitational fields. The formula to calculate it are straightforward just like the ones to calculate speed and distance.

The way a GPS works is to send a clock and a radio into orbit and connect it to a clock and a radio on Earth. The clock measures the time it takes the radio signal to reach the other radio. Since the clock is in orbit at a high speed and it has less gravity (being far from the Earth) time operates at a different rate. The GPS calculates the change in time itself to adjust the time it takes the signal to travel in order to give the correct answer and therefore locate your GPS accurately. Without the time dilation factor, your GPS wouldn't work.

am I in the right class room or even the right grade level... starting to feel me tarded...
.. yes fractional time..

T=t c1-v/c [2.5]=TY

W Y=1/c1-cv/c 2.5

Lorentz Transformation: Gamma = 1 / [1 - v2/c2]

T=t(1-(v/c)2)1/2=t/y
w y=1/(1-(v/c)2)1/2...ops.. on the train.. pushy people..

yes accountability..

.. same thing E struggled with constantly.. the second thing in the universe. gravity accountability..hmmm

This will give you the time dilation on the train ride. For most train rides the answer is ... "seems like forever!".

The answer is zero without equivalency. To get equivalency i.e., a=b, b=c, therefore a=c. Therefore E=Mc**2 so M=E/c**2 so you would take the energy of your photon, divide it by the square of the speed of light and apply the resulting mass to the gravity constant at the desired location. This would give the equivalent weight if energy was converted to mass.

I may need a day or two to turn this all over... I'm multitasking my little brains out.. I love this.. being able to think with both side of my brain...lol

fo-doc. (no1phd) The weight of light is that it has some mass, the energy has an equivalence of mass. And mass is drawn towards other mass by processes of gravitation. The weight of light is the extent to which it is 'pulled' on by a gravitation. It is the bending observed around masses like our sun. Or, if you want to slightly personify it, it is them amount of pulling on hair that nature will tolerate before things happen.

Just guessing it, black holes are not part of the physical theories of modern physics. Relativity is a physical theory only, it deals with matter-energy and how some medium bends and is stretched. I think we are interpreting the stoppage of domain of applicability, that is the limits of one grand theory, as a part of nature according to that theory, instead of just a stopping point in the road. See, mass is physical, matter, which is like the holder of heaviness, sorta, and so too is a metric that responds to this clutter. What is needed for black holes to not be so problematic is to see them as pointing to another theory. This cut off, boundary and singularity business is just unnatural. So I think the idea that they are not real is useful now. Not that there isn't something going on, but just that our view right now doesn't incorporate it. To expand, the non-physical needs to be considered. I am not talking religious notions, but just that a dynamics that included a sort of active nothingness, a sort of downer for matter-space excitement. The trend would be to resolve to this state where a creation happened. So, if you wanted to put into three parts, there could be the material: The matter energy including mass and particles and electric forces, sounds- the tangible what-have-yous. The metric of spacetime, which is the stretchable tarp which molds itself around mass and keeps planets warm by pulling in flaming meteors and and trying to get everything sucked towards it. It is physical because it directs the path of points, like particles, in what are called worldlines or geodesics, which aren't technically the same, but just wiki the diff. if you care. If not, it doesn't matter much even if you did know. The third thing would be that active emptiness. It would be the resolution of the duality of mass and spacetime metric. It wuold not have bounds, but when it is in certain conditions, there would be a form, and there is where this gravitation business goes down. So I am not saying that there are no very energetic and mass-dense areas of gravity wells out there, but only that if a deeper understanding that embraces a type of energy that goes beyond 'so much mass always gives such a dent to spacetime' in the way that an ounce of mass bends space the same amount, from around a baseball, or around the center of the galaxy, so that the contribution to gravity felt is the same for both places. Well, if that strict sense of quantity was reduced, there would be a view past the point were current figuring gets stuck. I mean, that is the problem, isn't it, that the math just doesn't go through? That is what science is trying to do, so a principle that lets numbers behave more loosely would help facilitate a view that hits black holes and pulls a Buzz Light year. I always sympathized with the side characters in that story more than Woody or Buzz, but you have to admit, the latter's daring did get the whole story moving, and that is what is needed now... I now wonder if data can be sorted in such a way that the amount of information encoded on a certain amount of energy is something which would change the numeric on basic matters such as counting of events.

In gr in newer mathematics, one needs to know matter and space properties, given by the classic equations, the swirling coffee of space and the grains in it, and additionally the events that happen in the area. But perhaps, after some further contemplation, the number of events in phenomenon to be modeled may be seen to not be absolute.

.. so redshift.yes.. the weight of light No..hmm

Redshift is something that happens like the Doppler effect, it just means that light takes a certain amount of energy or fuel to escape a gravity well. If something is trying to get out of the sky, it requires fuel. Maybe it a sport coach saying to athletes with medicine balls to defy gravity, there is a fuel of chemical energy in the muscles, ultimately of trying to reach escape velocity on eggs and bananas and toast or whatever they had for breakfast. Or consider a rocket, but for whatever is picked, in order for something to go outwards from a potential well, it needs fuel. If you could imagine something as a weightless object, you could just tap it going, and gravity would not act on it because gravity is only between toe massive/energetic bodies. If something is truly weightless, if it has no mass for gravity to pull on, or if you prefer the gr view, weight to slide down the spacetime warps, it will either just sit there no matter what hell breaks lose in the universe around it, or it will go straight without any force stopping it. which of the two isn't the point here. It is just that the redshift is the cost of the weight for photons to move in the presence of gravity potentials. You could make the point about the blushifting as well, but that would just involve a lot of hills, and we all know enough about rolling down those, Wasn't that what childhood was all about some afternoons?

Apples and oranges. A photon is, by definition, a massless particle (hence no weight). The equivalence given was the conversion of it's energy to mass as a "measure".

A different concept is the change in energy associated with photonic frequency, i.e., higher frequency equals higher energy. The expansion of space/time provides a "stretch" coefficient which spreads the energy and time over a greater distance to give a unit "energy per unit of space/time" that varies with redshift but the absolute value of the energy associated with photonic frequency stays the same. (Good 'ol Einstein!)