You can buy commercial Quantum Key Distribution (QKD) systems that you just hook up to a fiber, and they will start spitting out provably secure keys in either end.
QKD was actually one of the first hot proposals in quantum information science.
Using novel schemes, such as decoy states (very weak pulses that would let you spot any eavesdropper. Roughly), QKD has been demonstrated over 10km in commercial fibers.
The Economist is running an eloquent elaboration of this under the title Civil liberties under threat,
The real price of freedom.
I will be plastering this series on my office door as it is published. Their version of parents statement:
If the war against terrorism is a war at all, it is like the cold war--one that will last for decades. Although a real threat exists, to let security trump liberty in every case would corrode the civilised world's sense of what it is and wants to be.
I couldn't agree more: The Logitech Marble is hands down the best pointing device on the market.
Got my first around 6 years ago, and now have Marbles at all machines I use frequently. The current count is 5: Office, lab, laptop, home, and a pristine spare in case they ever go out of production.
For the people worried about RSI: I newer experienced even a tinge of that (I got my first marble after starting getting issues with RSI from using a mouse).
My favorite bonus feature of the Marble: The ball is heavy enough that you can give it a good flick and send your cursor all the way across multiple screens. I laugh when I see my poor mouse-bound coworkers drag-lift-dragging their mice.
If you're in IT and haven't used a Marble, go buy one now!
As per the tradition in new-school quantum physics, the original article is of course available for everyone at arxiv.org: http://arxiv.org/abs/0704.2529.
(Nature articles are a bit special -- they are submitted to the "preprint archive" after they are published...)
T-Mobile for the same reasons. I actually discovered a neat trick on the Pay-as-you-go: if you pay up $100 in one payment, you get überlord status and all you minutes will last for a year. Presto: a mobile phone plan for $90+n*$10 for n years. -- It almost feels like being home in Europe:)
Really -- you Americans are getting ripped of on your phone plans. Market economy my ***.
Why not just use SpamGourmet or some other provider of free disposable email addresses?
That way, you get to keep all your email in one place. Nice and tidy, nice and tidy,....
Zubrin's very well-written book makes a compelling argument that a bit of cleverness and rational analysis would go a lot farther than the "drive your truck to Mars" approach (perfect "feel good" weekend read).
As far as I remember, Zubrin was one of the people who got the possibility of going to Mars on the media radar. He also founded the Mars Society.
You got your physics right, as anyone who've experienced the difference between being just in _front_ of and just _behind_ a (regular) canon muzle: in front of the canon you get the sonic shock.
I'm not sure how loud it will be to people on the ship: you will probably get some non-shock transients propagating backwards.
Slashdot Mirror
Using novel schemes, such as decoy states (very weak pulses that would let you spot any eavesdropper. Roughly), QKD has been demonstrated over 10km in commercial fibers.
The Economist is running an eloquent elaboration of this under the title Civil liberties under threat, The real price of freedom.
I will be plastering this series on my office door as it is published. Their version of parents statement:
I couldn't agree more: The Logitech Marble is hands down the best pointing device on the market.
Got my first around 6 years ago, and now have Marbles at all machines I use frequently. The current count is 5: Office, lab, laptop, home, and a pristine spare in case they ever go out of production.
For the people worried about RSI: I newer experienced even a tinge of that (I got my first marble after starting getting issues with RSI from using a mouse).
My favorite bonus feature of the Marble: The ball is heavy enough that you can give it a good flick and send your cursor all the way across multiple screens. I laugh when I see my poor mouse-bound coworkers drag-lift-dragging their mice.
If you're in IT and haven't used a Marble, go buy one now!
As per the tradition in new-school quantum physics, the original article is of course available for everyone at arxiv.org: http://arxiv.org/abs/0704.2529. (Nature articles are a bit special -- they are submitted to the "preprint archive" after they are published...)
T-Mobile for the same reasons. I actually discovered a neat trick on the Pay-as-you-go: if you pay up $100 in one payment, you get überlord status and all you minutes will last for a year. Presto: a mobile phone plan for $90+n*$10 for n years. -- It almost feels like being home in Europe :)
Really -- you Americans are getting ripped of on your phone plans. Market economy my ***.
Why not just use SpamGourmet or some other provider of free disposable email addresses? That way, you get to keep all your email in one place. Nice and tidy, nice and tidy,....
Zubrin's very well-written book makes a compelling argument that a bit of cleverness and rational analysis would go a lot farther than the "drive your truck to Mars" approach (perfect "feel good" weekend read). As far as I remember, Zubrin was one of the people who got the possibility of going to Mars on the media radar. He also founded the Mars Society.
The fact that you can still send emails anonymously is an important advantage of this scheme as compared to authentication-based schemes.
You got your physics right, as anyone who've experienced the difference between being just in _front_ of and just _behind_ a (regular) canon muzle: in front of the canon you get the sonic shock.
I'm not sure how loud it will be to people on the ship: you will probably get some non-shock transients propagating backwards.