Apparently you missed the whole reason why quantum cryptography is radically different: It is IMPOSSIBLE to duplicate the quantum key or the quantum message exactly. So Michaels qubits are different from the one Bob sent AND there are ways for Alice to find out that they are different, so she knows eavesdropping has occurred.
It's a bit like making a copy of a letter - that self destructs when it is copied or read - that looks different depending on the light you use to scan it/read it (for example rgb(125,54,74)) - and the copy you make will again be spread over the different frequencies in a random way.
So some of it will only be visible again if it is viewed under light of color rgb(245,45,7), while other parts can only be seen under light rgb(45,4,48) So the end result of your copy will NOT be the original. When Alice wants to read the letter, she uses the frequency that Bob told her to use. If that color wasn't rgb(125,54,74), then Michael wasn't able to copy the message anyway. But even if Michael already used the correct color to make the copy, the copied version will only have part of the message in the correct color.
So Alice uses rgb(125,54,74), and then notices that most of the words on the letter are still missing! En thus she knows that this is not the original one, but a copy!
Apparently you missed the whole reason why quantum cryptography is radically different:
It is IMPOSSIBLE to duplicate the quantum key or the quantum message exactly.
So Michaels qubits are different from the one Bob sent AND there are ways for Alice to find out that they are different, so she knows eavesdropping has occurred.
It's a bit like making a copy of a letter
- that self destructs when it is copied or read
- that looks different depending on the light you use to scan it/read it (for example rgb(125,54,74))
- and the copy you make will again be spread over the different frequencies in a random way. So some of it will only be visible again if it is viewed under light of color rgb(245,45,7), while other parts can only be seen under light rgb(45,4,48)
So the end result of your copy will NOT be the original.
When Alice wants to read the letter, she uses the frequency that Bob told her to use. If that color wasn't rgb(125,54,74), then Michael wasn't able to copy the message anyway. But even if Michael already used the correct color to make the copy, the copied version will only have part of the message in the correct color.
So Alice uses rgb(125,54,74), and then notices that most of the words on the letter are still missing! En thus she knows that this is not the original one, but a copy!
Find an orbit where you pass through one of the Lagrange points. While you are in the Lagrange points, you are moving in a straight line, because all accelerations cancel each other out there.
there's no such thing as a straight-line orbit.
Find an orbit where you pass through one of the Lagrange points. While you are in the Lagrange points, you are moving in a straight line, because all accelerations cancel each other out there.
THe second after I hit the submit button, I noticed that I forgot the second 'f'. Or maybe my keyboard ate it.
So, for everyone who still needs to have this missing letter, I will post it here:
f
PS: This error is actually a very common one for non-native speakers. And probably for a lot of native ones too. Btu in my cas it was a sipmle typo.
PPS: Yes, that last sentence was misspelled on pupose.
PPPS: The 'r' in purpose was eaten by my keyboard.
The mass will be the rest mass of both colliding particles + the kinetic energy they both have (a couple of TeV). It won't even have the energy of a grain of salt. It will have the energy of about 1 helium atom.
a) a black hole created in a particle accelarator would evaporate too quickly to be dangerous b) the energies that LHC is producing are a LOT smaller than the energies that a lot of cosmic rays have when they hit earth. it's a lot of energy for man, but not for nature, actually quite common. While you were reading this comment, a couple of particles with this energy PASSED THROUGHT YOU
that site you mention is apparently kinda unable to count correctly.
for example, it gives 8 visitors/day for a website that i know has 4000 visitors per day.
how does it get those numbers?
the inside of your skull has cerebrospinal fluid (CSF), which has the same role as this foam. The foam should anyway reduce the impact on you head a bit because it's a bit flexible.
it must be INTERNATIONAL SECURITY then. Which obviously means that we have to coöperate to protect Earth from extraterrestrial threats. Intergalactic pirates trying to steal our music. Must be.
Slashdot Mirror
Well d'uh... that's why it is called babble-fish!
(repost, WITH paragraphs)
Apparently you missed the whole reason why quantum cryptography is radically different:
It is IMPOSSIBLE to duplicate the quantum key or the quantum message exactly.
So Michaels qubits are different from the one Bob sent AND there are ways for Alice to find out that they are different, so she knows eavesdropping has occurred.
It's a bit like making a copy of a letter
- that self destructs when it is copied or read
- that looks different depending on the light you use to scan it/read it (for example rgb(125,54,74))
- and the copy you make will again be spread over the different frequencies in a random way.
So some of it will only be visible again if it is viewed under light of color rgb(245,45,7), while other parts can only be seen under light rgb(45,4,48)
So the end result of your copy will NOT be the original.
When Alice wants to read the letter, she uses the frequency that Bob told her to use. If that color wasn't rgb(125,54,74), then Michael wasn't able to copy the message anyway. But even if Michael already used the correct color to make the copy, the copied version will only have part of the message in the correct color.
So Alice uses rgb(125,54,74), and then notices that most of the words on the letter are still missing! En thus she knows that this is not the original one, but a copy!
Apparently you missed the whole reason why quantum cryptography is radically different: It is IMPOSSIBLE to duplicate the quantum key or the quantum message exactly. So Michaels qubits are different from the one Bob sent AND there are ways for Alice to find out that they are different, so she knows eavesdropping has occurred. It's a bit like making a copy of a letter - that self destructs when it is copied or read - that looks different depending on the light you use to scan it/read it (for example rgb(125,54,74)) - and the copy you make will again be spread over the different frequencies in a random way. So some of it will only be visible again if it is viewed under light of color rgb(245,45,7), while other parts can only be seen under light rgb(45,4,48) So the end result of your copy will NOT be the original. When Alice wants to read the letter, she uses the frequency that Bob told her to use. If that color wasn't rgb(125,54,74), then Michael wasn't able to copy the message anyway. But even if Michael already used the correct color to make the copy, the copied version will only have part of the message in the correct color. So Alice uses rgb(125,54,74), and then notices that most of the words on the letter are still missing! En thus she knows that this is not the original one, but a copy!
there's no such thing as a straight-line orbit.
Find an orbit where you pass through one of the Lagrange points. While you are in the Lagrange points, you are moving in a straight line, because all accelerations cancel each other out there.
there's no such thing as a straight-line orbit.
Find an orbit where you pass through one of the Lagrange points. While you are in the Lagrange points, you are moving in a straight line, because all accelerations cancel each other out there.
So you put 240 people in a single ballroom, and all they do is surf the web?
Why..? Did you forget to turn on the music?
wasn't this already mentioned on slashdot a couple of months ago?
THe second after I hit the submit button, I noticed that I forgot the second 'f'. Or maybe my keyboard ate it.
So, for everyone who still needs to have this missing letter, I will post it here:
f
PS: This error is actually a very common one for non-native speakers. And probably for a lot of native ones too. Btu in my cas it was a sipmle typo. PPS: Yes, that last sentence was misspelled on pupose. PPPS: The 'r' in purpose was eaten by my keyboard.
Why do you assume that all high karma people switch of the ads? The ads are what pays for this sites, so why turn them of...?
The IT Crowd - This is the internet http://www.youtube.com/watch?v=iRmxXp62O8g
and what if people clone the card? then they have a card with the same Key...
5$/week * 35 subscribers * 15 weeks = 9000$ ??
The sum is still very fast if one particle has slightly more energy than the other.
Remember that you have to use the relativistic sum of velocities.
So if for example
v = 0.999c and u = -0.999 999c: [1/1000 faster] then
s = 0.000 999 c / (1 + c/c) = 0.000499 = 150km/s or 540 000 km/h.
The mass will be the rest mass of both colliding particles + the kinetic energy they both have (a couple of TeV).
It won't even have the energy of a grain of salt. It will have the energy of about 1 helium atom.
basically what the TFA is saying is that if you put a lot of energy in a very small spot, you get a black hole...
in other words:
E=mc
+
high mass density = black hole
Nothing to see here, move along
PS: IAAP
a) a black hole created in a particle accelarator would evaporate too quickly to be dangerous
b) the energies that LHC is producing are a LOT smaller than the energies that a lot of cosmic rays have when they hit earth. it's a lot of energy for man, but not for nature, actually quite common. While you were reading this comment, a couple of particles with this energy PASSED THROUGHT YOU
c) don't panic
but who has removed all slashes and dots!?
slashdot must have encountered an anti-slash&dot particle.
No. Truth actually matters a lot for scientists...
The bank robbers in Belgium is mentioned in this article. http://www.dailymail.co.uk/news/worldnews/article-1216735/Two-bank-robbers-killed-explosives-trying-blow-safe.html BTW, it's not mentioned in this article, but the safe survived the blast.
... or it could be an important message from your future self, containing instructions for making a time machine that send mails backwards in time.
no, it should actually go up to 11
that site you mention is apparently kinda unable to count correctly.
for example, it gives 8 visitors/day for a website that i know has 4000 visitors per day.
how does it get those numbers?
the inside of your skull has cerebrospinal fluid (CSF), which has the same role as this foam. The foam should anyway reduce the impact on you head a bit because it's a bit flexible.
Indeed. I'm Dutch speaking. I was doubting whether to include the 'diaeresis', but then i thought it wouldn't be that important if it were wrong.
it must be INTERNATIONAL SECURITY then. Which obviously means that we have to coöperate to protect Earth from extraterrestrial threats. Intergalactic pirates trying to steal our music. Must be.