What exactly if infinite?

Question

Have you ever thought what eternal life is? Or mabye what infinite is. Can anyone just tell me what exactly they think forever is.I've thought when we get to heaven it will be just like 100yrs. on earth x forever. Just give it thought.

Answer 1

In physics, approximations of real numbers are used for continuous measurements and natural numbers are used for discrete measurements.It is therefore assumed by physicists that no measurable quantity could have an infinite value, for instance by taking an infinite value in an extended real number system or by requiring the counting of an infinite number of events. It is for example presumed impossible for any body to have infinite mass or infinite energy. There exists the concept of infinite entities (such as an infinite plane wave) but there are no means to generate such things.It should be pointed out that this practice of refusing infinite values for measurable quantities does not come from a priori or ideological motivations, but rather from more methodological and pragmatic motivations. One of the needs of any physical and scientific theory is to give usable formulas that correspond to or at least approximate reality. As an example if any object of infinite gravitational mass were to exist, any usage of the formula to calculate the gravitational force would lead to an infinite result, which would be of no benefit since the result would be always the same regardless of the position and the mass of the other object. The formula would be useful neither to compute the force between two objects of finite mass nor to compute their motions. If an infinite mass object were to exist, any object of finite mass would be attracted with infinite force (and hence acceleration) by the infinite mass object, which is not what we can observe in reality.This point of view does not mean that infinity cannot be used in physics. For convenience's sake, calculations, equations, theories and approximations often use infinite series, unbounded functions, etc., and may involve infinite quantities. Physicists however require that the end result be physically meaningful. In quantum field theory infinities arise which need to be interpreted in such a way as to lead to a physically meaningful result, a process called renormalization. One application where infinities arise is the quantification of thermodynamic temperatures.However, there are some currently-accepted circumstances where the end result is infinity. One example is black holes. Physicists have verified that, when a star experiences gravitational collapse, it will eventually shrink down to a point of zero size, and thus have infinite density. This is an example of what is called a mathematical singularity, or a point where the laws of mathematics, and therefore of physics, break down. Physicists have given up hope on the singularity not being real, and have since turned their attention to finding new mathematics where infinities are possible.

Answer 2

Any finite number represents EXACTLY 0% of infinity.
The age of the universe (according to observations) seems to be 14 billion years. This represents 0% of eternity.

It is thought that when the universe reaches less than 100 times its present age, the expansion will have separated even the atoms. The universe will be dead and still, 0% of eternity will have passed.

However, since time only exists if matter/energy exists, when the energy density reaches zero, time will not exist. Therefore, eternity (an infinite length of time) is probably impossible.

Answer 3

infinity is an impossible thing as far as we know. and at this stage of evolution the human brain cant even understand what infinite really is, we can only express it mathematically (sort of).

nothing can be infinite, not time and certainly not speed. all evidence points to the fact that the universe has a specific age, about 13.7 billion years old. so nothing in the entire universe can be older than that.

and nothing can have an infinite speed, mostly because nothing can go faster than light. but its also just illogical. if something had infinite speed how long would it take it to go 1 meter? 0 seconds. how long would it take it to go 2 meters? 0 seconds. so if something had an infinite speed it would technically be everywhere in the universe at one time.

Answer 4

Well first of all, I think you are confusing the words eternal and infinite. Eternal usually signifies an endless period of time. Etermal life would mean life without end. Instead of 100 years times forever it would be more like forever times forever.

Infinity indicates a "space" or length, be it an infinite number of numbers, an infinite period of time or an infinite universe. Being aware of course that the universe is not infinite only boundless, (i.e. having no "edge").

Answer 5

Mathematically, infinity can't be used in any arithmetic operation. It is meaningless to multiply it times something. So just think of whatever as being infinite.

We can't perceive infinity. Whether you are thinking about eternal life or the number of points on a line, it is beyond our ability to conceive. So I believe the wise person contemplates it for awhile and then moves on to more finite, meaningful things.