Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?

Comment Re:Infinity (Score 1) 1067 1067

Ah right, so it's actually:

1/0 = ÃS'
0ÃS' = 1

As for the utility, if there are situations where a plot or solve 1/x for every x is necessary, I imagine there would be situations where it should be workable even if [.'. x] includes 0 without the algorithm being deemed broken because there's no "if x != 0 then 1/x else ???" in it.

Comment Re:Infinity (Score 1) 1067 1067

I'd like to understand why we can't do the same trick we do with sqrt(-1) on (1/0) and call it "zeplex". Example:

1/0 = Ê' (some applicable symbol)

A zeplex number is composed of a real part and a zereal part: a + bÊ'

Ê'/Ê' = 1
0*Ê' = 0

And so on.

It can't be just the asymptotic nature, because it doesn't seem to hold complex from being a valid concept. I.e.: http://www.wolframalpha.com/in...

Comment Re:Depends on the energy source duh! (Score 1) 775 775

An electrical heater is not a system, it's just part of one. The system itself would at least involve the energy source and the transporting medium, where the losses continue to hold true the fact that there's no 100% efficiency in any system. If there were, Entropy would have no meaning.

If you take the isolated case of the heater as being 100% efficient because in itself it's able to convert 100% of its input energy into wanted heat (which itself is discutable, since there may still be losses through electro-magnetic emissions, vibrations, etc. that would not be captured by the room and transformed into heat, even though all that would be as negligible as contesting gravity acceleration as not being 9.8m/s^2 in most cases), you'd just as well pick a heat pump which, with the same amount of input energy, "produces" 3 times more heat.

Comment Re:Depends on the energy source duh! (Score 1) 775 775

What I meant is that the fact seems to be "electricity is way more efficient than combustion" rather than "electricity is 100% efficient. Gas is not".

As far as my ignorance in the laws of Physics goes, it's simply impossible to have any system running at 100% efficiency because it automatically implies zero loss of energy.

Electric systems lose energy everywhere: conduction materials have impedance, motors have friction *and* generate inductive impedance, photons are created...

Comment Re:I hated it (Score 1) 364 364

Superman is an alien, brought to Earth on a spaceship, and has super powers. WHAT DID YOU EXPECT?

How about playing the evil guy to unite the Earth governments under a single goal and thus avoid the general destruction of humanity? Hmm, that sounds familiar.

Ok, I got it! Fight AGAINST the destruction of OTHER impressive things like the Great Wall of China, the Everest, Iguassu Falls and such, instead of DESTRUCTING a Manhattan-like city while fighting the enemy.

Comment Re:I hated it (Score 1) 364 364

Thank you for putting into words what I have been feeling since I watched it.

What I kept from the film was interminable mass-destruction scenes with little care to a believable script. A waste of good character canon. I can't imagine why any significant number of (new) fans would look for any other merchandising or media after that.

Comment Re:Out of character... (Score 1) 132 132

I can understand why a group interested in justice and equality would expose the sensitive details of people in the databases.

I understand that as meaning "this group doesn't know how to pick their targets".

And it's not like there's not already a whole lot of danger and unfairness in South Africa -- the "net condition" will not really change.

So let's put people trying to make things better at risk?

(...)Pubic awareness and especially global public awareness will have been raised

The awareness I get from this is that hackers can give a huge blow against whistle blowers with no real "net gain" to any cause.

It is not best to swap horses while crossing the river. -- Abraham Lincoln