I think I have an even better idea: just annihilate it using a ton of anti aluminium, you can potentially extract the theoretical maximum energy (mc^2, the chemical binding energy is peanuts by comparison) from it.
[...]. Aluminium stores roughly 83 MJ/L. You wouldn't be scared to have a ton of aluminium lying around behind your house, but that block could store enough energy to run your house for a year.
How would you extract power from a ton of aluminum? (honest question:)
Cloud related ranting apart, can you imagine a better attack vector than wireless booting? Just place a rouge access point in a crowded cafe or station, broadcast a boot image and infect all of the poor smucks that start-up their laptop in the area. You just need to patch their windows system and then start it, it will take 30 sec longer than the ususal 5min boot, they won't ever notice...
I agree, my browser is already stable enough (all things considered). I wish there was a way to prevent flash from trashing 100% of my cpu for a stupid game.
... you fold the paper your 2D key is on? Tears, that's what. Tears.
Yeah, paper is quite a stupid medium for a key, I mean really, paper? The thing that can be folded, erased, burned, it can fade, get wet... Why not a real key? A physical object made of metal or plastic that actually looks somewhat like a key? I know that not everyone can print metal at home but you can "print" a metal key at your local mall and vinyl cutters are getting less and less expensive (you should probably xor the crypto-key with a password, for additional security, if you use someone else's printer). Maybe it would be even possible to make the information stored on the key retrievable by scanning the object with a home scanner.
"It is also worth mentioning that Google execs will not serve jail time because in Italy sentences of less than three years are commuted for people without criminal records."
What? So, in Italy the first 3year sentence crime is free?
If we don't catch you again... then yes, if you get caught again you will also serve the jailtime that was condoned the first time (you still have to pay a fine and/or do some social work anyway).
Yeah. I know it's not perfect, and that all 2 m^2 of skin wouldn't actually be receiving full sunlight. I was just trying to emphasize that even with unrealistically optimal conditions, we wouldn't get nearly enough energy from the sun to live on photosynthesis alone.
we just need to evolve (or bioengineer) larger backs to catch more sun. Note that the creature doing photosynthesis has quite a large back
Actually you can design around vulnerable users. How? In this case you could just avoid allowing themes (yes, themes aka images) with executable content, why the hell would a theme need a suid script?
In general you can enforce sandboxing: let people install stuff in their own home (so that they can't compromise the system) and explicitly ask the user if the what an untrusted app is trying to do is allowed (read "not signed by distribution" for "untrusted") . If I download an app to get youtube videos (it's the last untrusted app I installed) and it tries to touch my cronjob, or access my pictures, or edit another app's configuration I want to be notified. Of course the first time I'll get a prompt that ask me if it can connect to the internet, I'll say yes to that and start getting worried if I get any other funny request.
Unfortunately stupidity is not terminal often enough. I blame the nanny state, and warning lables on everything.
My favourite example: A hair dryer with the warning "Do not use in bath." If you are stupid enough to use an electrical appliance in the bath, you deserve to die!
Question on a related problem: I'm looking for a cheap GPS logger that can save a timestamp - coordinate pair every few seconds. Main requisite is a long lasting battery and memory (an SD card slot is fine), bonus points if it has bluetooth that can be turned on if needed. Any advice? It won't tell you where your stuff is but will reveal a lot of interesting info on where it has been:)
A question for you. What is it that limits the speed of light? If photons are massless, what other property of photons or the universe sets their speed?
The structure of the theory of electromagnetism: for the Maxwell equation to work everywhere in the universe the speed of light must be constant in every frame of reference and equal to: 1/sqrt(epsilon0*mu0)
epsilon0 and mu0 are the electric and magnetic permeability of void space.
If the speed of light in vacuum was not limited and costant electromagnetism would not work the way it does.
This does not mean gravity in fact moves faster than light [...] Most likely it'll turn out to travel at or below the speed of light.
I definitely hope it does not because I do not think there is a sensible theory for a massive graviton.
AFAIK (and yes, I am a particle physicist) almost everybody expects gravity to propagate at the speed of light (which, in fact, could also be called "speed of gravity", or "speed of massless bosons")
Slashdot Mirror
I think I have an even better idea: just annihilate it using a ton of anti aluminium, you can potentially extract the theoretical maximum energy (mc^2, the chemical binding energy is peanuts by comparison) from it.
[...]. Aluminium stores roughly 83 MJ/L. You wouldn't be scared to have a ton of aluminium lying around behind your house, but that block could store enough energy to run your house for a year.
How would you extract power from a ton of aluminum? (honest question :)
Clearly, we need hash functions which take long amounts of time to compute.
A no brainer: just add a sleep() here and a do_nothing() loop there...
http://i.imgur.com/uPovx.jpg
try to run cde with its full path, e.g.: ./cde ../lame
it did the trick for me
Don't feed the troll, young padawan!
Comparing timber to oil is not a valid analogy because timber is a renewable resource.
To be pedantic, petroleum *is* a renewable resource, only on a time-scale much larger than the human life span :)
Cloud related ranting apart, can you imagine a better attack vector than wireless booting? Just place a rouge access point in a crowded cafe or station, broadcast a boot image and infect all of the poor smucks that start-up their laptop in the area. You just need to patch their windows system and then start it, it will take 30 sec longer than the ususal 5min boot, they won't ever notice...
I agree, my browser is already stable enough (all things considered). I wish there was a way to prevent flash from trashing 100% of my cpu for a stupid game.
Here are the Atlas official plots:
http://atlas.web.cern.ch/Atlas/public/EVTDISPLAY/events.html
CMS:
http://cms.web.cern.ch/cms/Media/Images/EventDisplays/7_0TeVCollisions/index.html
LHCb:
http://cdsweb.cern.ch/record/1255400
Alice:
http://cdsweb.cern.ch/record/1255398?ln=en
and finally all the CERN public photos:
http://cdsweb.cern.ch/collection/LHC%20First%20Physics%20Photos
One of the first events seen in Atlas:
http://imgur.com/ugwnl.png
and in CMS:
http://cmsdoc.cern.ch/events/snapshotA.png
... you fold the paper your 2D key is on? Tears, that's what. Tears.
Yeah, paper is quite a stupid medium for a key, I mean really, paper? The thing that can be folded, erased, burned, it can fade, get wet...
Why not a real key? A physical object made of metal or plastic that actually looks somewhat like a key? I know that not everyone can print metal at home but you can "print" a metal key at your local mall and vinyl cutters are getting less and less expensive (you should probably xor the crypto-key with a password, for additional security, if you use someone else's printer). Maybe it would be even possible to make the information stored on the key retrievable by scanning the object with a home scanner.
"It is also worth mentioning that Google execs will not serve jail time because in Italy sentences of less than three years are commuted for people without criminal records."
What? So, in Italy the first 3year sentence crime is free?
If we don't catch you again... then yes, if you get caught again you will also serve the jailtime that was condoned the first time (you still have to pay a fine and/or do some social work anyway).
Ah and ianal.
Yeah. I know it's not perfect, and that all 2 m^2 of skin wouldn't actually be receiving full sunlight. I was just trying to emphasize that even with unrealistically optimal conditions, we wouldn't get nearly enough energy from the sun to live on photosynthesis alone.
we just need to evolve (or bioengineer) larger backs to catch more sun. Note that the creature doing photosynthesis has quite a large back
Actually you can design around vulnerable users. How? In this case you could just avoid allowing themes (yes, themes aka images) with executable content, why the hell would a theme need a suid script?
In general you can enforce sandboxing: let people install stuff in their own home (so that they can't compromise the system) and explicitly ask the user if the what an untrusted app is trying to do is allowed (read "not signed by distribution" for "untrusted") . If I download an app to get youtube videos (it's the last untrusted app I installed) and it tries to touch my cronjob, or access my pictures, or edit another app's configuration I want to be notified. Of course the first time I'll get a prompt that ask me if it can connect to the internet, I'll say yes to that and start getting worried if I get any other funny request.
Unfortunately stupidity is not terminal often enough. I blame the nanny state, and warning lables on everything.
My favourite example: A hair dryer with the warning "Do not use in bath." If you are stupid enough to use an electrical appliance in the bath, you deserve to die!
We are undermining evolution
I've had a developer's account for a while, and I think that wave is fun.
Do you have any invite for the sandbox? Care to send me one? (muzzle at gmail)
Question on a related problem: :)
I'm looking for a cheap GPS logger that can save a timestamp - coordinate pair every few seconds. Main requisite is a long lasting battery and memory (an SD card slot is fine), bonus points if it has bluetooth that can be turned on if needed. Any advice?
It won't tell you where your stuff is but will reveal a lot of interesting info on where it has been
you wish it was google
take a look at this
http://farm4.static.flickr.com/3604/3585051300_d23a37a32e_o.png
A question for you. What is it that limits the speed of light? If photons are massless, what other property of photons or the universe sets their speed?
The structure of the theory of electromagnetism: for the Maxwell equation to work everywhere in the universe the speed of light must be constant in every frame of reference and equal to:
1/sqrt(epsilon0*mu0)
epsilon0 and mu0 are the electric and magnetic permeability of void space.
If the speed of light in vacuum was not limited and costant electromagnetism would not work the way it does.
We are the only keepers of the true Debian flame here on /. :)
This does not mean gravity in fact moves faster than light [...] Most likely it'll turn out to travel at or below the speed of light.
I definitely hope it does not because I do not think there is a sensible theory for a massive graviton.
AFAIK (and yes, I am a particle physicist) almost everybody expects gravity to propagate at the speed of light (which, in fact, could also be called "speed of gravity", or "speed of massless bosons")
That which lies dead but dreaming must not be awoken, especially on embedded devices.
were you aware of this video or is it just a coincidence?
Name: cult of debian
Established: 1993
Major Deity(s): Bruce Perens & people called Ian
Sacred relic: Debian 1.0 discs
Antichrist: ubuntu
Oh, come on! Every self respecting Debian acolyte knows that there was no Debian 1.0 release (it started with 1.1)
I agree.
Just to put things in the right context here is a link to the famous Tanenbaum-Torvalds debate.
http://oreilly.com/catalog/opensources/book/appa.html
ehi come on!
every self respeting geek has already read it 10 years ago, and it's not like Tanenbaum never did anything else but that flame war.
Mini3 is a very interesting open source OS and I can only be happy it has received some founding and wish the project the best luck.