As far as we can tell, black holes don't have any of those characteristics.science_rules said:...why does a black hole have infinite density, mass, and gravity...
There is some debate on PF as to what "the singularity" means, however Kaku was almost certainly referring to a finite mass in zero volume. In either case, since we can't ever go and check, that doesn't impact what a black hole looks like to us (a region of space with a finite volume, finite mass and finite gravitational field). There is no debate about that. So does that clear it up...?science_rules said:In a science documentary, Michio Kaku mentioned that the singularity of black holes have infinite density and infinite gravity.
Sorry, but the misunderstanding there is yours; You extrapolated something beyond what he said.How can laymen expect to learn anything or trust scientists if what some scientists say is not what other scientists believe and scientists never agree with each other about fundamental ideas about the Universe? If what he said is true, it seems then that scientists cannot agree with each other, either that or scientists just make stuff up even if it doesn't make any sense.
Why does an electron have infinite electric field at zero distance?science_rules said:infinite gravity
That makes no sense. If Kaku meant that, he should have said so instead of making it confusing and misleading for the laymen. Saying a black hole has infinite density is not the same as saying finite mass in zero volume.russ_watters said:There is some debate on PF as to what "the singularity" means, however Kaku was almost certainly referring to a finite mass in zero volume. In either case, since we can't ever go and check, that doesn't impact what a black hole looks like to us (a region of space with a finite volume, finite mass and finite gravitational field). There is no debate about that. So does that clear it up...?
Sorry, but the misunderstanding there is yours; You extrapolated something beyond what he said.
[also, a link would help...]
Yes, actually it is:science_rules said:That makes no sense. If Kaku meant that, he should have said so instead of making it confusing and misleading for the laymen. Saying a black hole has infinite density is not the same as saying finite mass in zero volume.
You beat me to it...russ_watters said:Yes, actually it is:
What happens to "d" in the following function as "v" approaches zero?
d=m/v
And please slow your roll.
You now understand why most physicists roll their eyes at the mention of Michio Kaku...science_rules said:How can laymen expect to learn anything or trust scientists if what some scientists say is not what other scientists believe
The infinite density of black holes is a result of the intense gravitational force that causes matter to collapse into an infinitely small point called a singularity. This singularity has infinite density because all the mass of the black hole is concentrated in an infinitely small space.
The mass of a black hole is determined by the amount of matter that has collapsed into the singularity. As more matter falls into the black hole, its mass increases. Since the singularity has infinite density, it can hold an infinite amount of mass, resulting in the black hole having infinite mass.
The strength of gravity is directly proportional to the mass of an object. Since black holes have infinite mass, they also have an infinite amount of gravitational force. This intense gravitational pull is what makes it impossible for anything, including light, to escape from a black hole's event horizon.
No, once an object crosses the event horizon of a black hole, it is impossible for it to escape due to the infinite gravity. The escape velocity required to leave the event horizon is greater than the speed of light, which is why even light cannot escape from a black hole.
Scientists use various methods, such as studying the effects of a black hole's gravity on surrounding objects, to indirectly observe and measure the properties of black holes. The theory of general relativity also predicts the existence of black holes and their properties, and so far, all observations have confirmed these predictions.