Note that it's still limited by the speed of light. The key feature, however, is that it is secure: someone intercepting the photon can't copy or read its qbit state without breaking the quantum entanglement, or preventing it from reaching the destination. In either case, the receiver will immediately know that the channel has been broken. It then stops transmitting a response to the sender, and the sender perceives this as also a break in secure communications and stops transmitting. Both the sender and the receiver would then go into failure mode and send query/response polls periodically. When secure communications are re-established, they can resume transmitting data.

The information contained in the qbit is transported from one entangled photon to another, but you first must get that entangled photon to the destination via more conventional means. They're doing that with a laser.

It's obviously not an integer then.

Fractions are ratios; they need an additional number to tell you what number the fraction represents. The number can be an integer or not; the fraction itself is not an integer.

E.g. 1/2 of the students in a class are expected to be above the national average. That does not tell you how many students should be above-average for your class to meet national standards.

If I additionally tell you that there are 27 students in the class, that does tell you how many students, but the number is not an integer. You end up expecting 13.5 students to be above average, which is nonsensical until you round up or down to come to a number that can mean anything.

You're in the 78%, not the 88%. At least where subtraction is concerned.

Citation needed. In fact, I would assume exactly the opposite is true: Imaging an object should require a much stronger reflection than simply using the Doppler effect to determine its velocity.

For instance, a magnetic flowmeter uses a very low-strength magnetic field of about 25 gauss [PDF] to measure a fluid's velocity, but a MRI machine uses a field with a strength of 5,000 to 30,000 gauss in order to actually image something.

I've been into and out of airports which required re-screening people who transferred because to get to the other gate or terminal you had to exit the secure area.

Unless you've scheduled a 2-3 hour layover between every flight, you're shit out of luck. And if you do schedule 2-3 hour layovers at every transfer, you're going to spend almost as much time sitting in airports as you do in the air.

Can, but their TOS says they won't. That's the "lock".

Citation needed. Unless a tweet is public, you haven't granted Twitter the right to redistribute "at will".

Yes, well, whether or not the universe is finite, the headline certainly was, and some things didn't fit.

The summary clarified: "This is the most distant cluster ever seen that has been confirmed spectroscopically."

Technically anything has an event horizon, although you'd have to compress yo mamma pretty significantly before she'd be smaller than her own event horizon.

The speed of light is infinite, because due to relativistic effects, time has stopped. Only an outside observer sees something moving at the "speed of light"; to the photon itself, no time passes.

http://science.slashdot.org/comments.pl?sid=2832613&cid=39915385

Forgot to say how you would run it - probably self-evident, but in case it isn't, you type the name of the batch file followed by the new MAC address (which will be substituted for %1).

You could do it without PowerShell, as a matter of fact. You would need to fill in a couple of blanks, but this .bat file should work.

n is the index for the NIC you want to change. The easiest way to find it is to run the command
wmic nic get name, index
and find the NIC you want to change. Since I assume you probably want to just change the MAC of a single NIC, you can hard-code it into the batch file. Hypothetically, if you wanted to, if you had a Windows installation to work with, of course...

It's libdvdcss, not libdvdcs. And the CSS (content scramble system) is only one part of the puzzle; non-encrypted DVDs will still require a MPEG-2 codec, which is also patent-encumbered and has royalty fees associated with it.

So the answer to GP's questions should really be "no", and "sometimes". VLC does not pay licensing fees; libdvdcss appears to bypass the licensing fees, but FFmpeg does not. From the ffmpeg.org legal readme: