Cable broadband at 100Mbps coming soon to Asutralia (1 Viewer)

[sunny]

Obviously there is an finite restriction for a each individual cable at a certain point, but if that point is so far away (i.e. tends to infinity) then therefore the potential speeds to us now would be "virtually" unlimited.

I won't disagree with that, but saying it is "virtually unlimited", and plain "unlimited" are very different things - one has a finite bound, the other doesn't. Its like Optus calling their 12GB cable plans "Unlimited"

e.g. you can fit a virtually unlimited amount of water through a strong but thin pipe. It just has to be pumped at a faster and faster rate, untill such times as the friction of the particles would slow it down from going any faster. The limiting factor in that instance however would primarily be that we don't have pumps capable of moving it that rediculously quick such that it will start hitting the partical friction limit, not the partical friction limit itself.

I know it is only a simplistic analogy of the point, but in real life there are many more problems than just "friction" that will severely limit the effective bandwidth of any medium from "unlimited" to not so unlimited.

 

[HotShot]

ok i think better come with a conclusion, cable is unlimited!

Nah just kidding, Theoritically---is that by equations? it is limited? or is it practically it is limited? Normally it is practically it is limited? By the equations are made to suite, that is equations are made and changed depending on the sitution, like for if cable was unlimited then equations would have to change and new equation is formed. Thus equation dont mean anything they just try explain wats going on. Like Einstein's equation of say Time Dilation, it trys to explain his relativity theory. The equation could very well be wrong (though it has been proved rite i think). Eqautions tend to limit things, ie y=x^2 -- always positive cannot be negative that is a limit. But the fact is nothing is limited, ppl believe that the limit in speed is the speed of light, but just because we cannot prove tat something can go faster doesnt mean that is the limit. Here is something: http://www.newsfactor.com/perl/story/20986.html

As processor speeds that is unlimited too, regardless of the type of chip, basically everything is unlimited it just depends on the type of technology we incoporate and have. In the past trains reaching speeds over 330+kmh was though as impossible due to friction, but now trains like Maglev that have no friction have unlimited speed. Only limited by our technology but our technology is unlimited.

 

[sunny]

ok i think better come with a conclusion, cable is unlimited!

ok..keep telling yourself that..

By the equations are made to suite, that is equations are made and changed depending on the sitution, like for if cable was unlimited then equations would have to change and new equation is formed. Thus equation dont mean anything they just try explain wats going on.

Incorrect. There are two types of equations: theories, and laws. A law is a generalisation that has been made from observations, and can be further used to predict the outcome of another problem/event in the futher with accuracy. It is undeniable in its accuracy, it is demonstratable, and observable. A theory is what you have described: only a hypothesis and is only meant to describe what is going on - they can be replaced by better models or theories. A philosopher can probably give a better definition.

Notice the last equation I gave, it is called Shannon's Law.

Like Einstein's equation of say Time Dilation, it trys to explain his relativity theory.

Einstein's theories of relativity, not laws of relativity.

Here is something: http://www.newsfactor.com/perl/story/20986.html

I seriously doubt SLAC used a 10,000km long coaxial cable for their experiment.

In the past trains reaching speeds over 330+kmh was though as impossible due to friction, but now trains like Maglev that have no friction have unlimited speed

Do the trains through vacuum? No. Maglev trains are capable of going much faster than they do right now - but they don't because of passenger comfort, and difficulties in bends when turning. Phyiscal properties apply limitations - not the technology. Yes, I have already done the Year 12 physics course.

Only limited by our technology but our technology is unlimited.

You should go back to a 66MHz 486 and 14.4K modem, and convince yourself its "unlimited".

Cable is not unlimited - how are everyone on the network meant to have unlimited bandwidth all at the same time? How can a broadcast network have a zero collision rate? How can broadcast packets never be lost? It is simply not possible to achieve "unlimited" bandwidth on a length of coaxial cable - there are inherently enough problems with the way networks work that limit bandwidth.

But the fact is nothing is limited, ppl believe that the limit in speed is the speed of light, but just because we cannot prove tat something can go faster doesnt mean that is the limit.

I have not said everything is limited - only cable networks and coaxial cables are - which was your original claim. A piece of coaxial cable has phyiscal properties that limit its usefulness, and the way they are deployed in cable networks adds to that.