>The shot resulted in the highest DT neutron yield obtained to date, estimated at nearly 3 × 1015 (three quadrillion), or almost 8,000 joules of fusion energy
And then:
>All 192 NIF beams delivered 1.7 megajoules (MJ) to the hohlraum
Fair enough, just two questions: 1) An electron hitting an atom will produce photons with the same energy via the Bremsstrahlung effect. As electrons will hit atoms sometimes, 300 MeV electrons means you will have 300 MeV photons, right? 2) How much energy a photon needs to transmute an atom? I believe it's lower than 300 MeV (but as a commenter said, it's 300 MeV *per meter* so really you need a lot of those devices chained together for them to become dangerous, I guess)
Unless you can somehow turn down the volume of the device, 300 Mev photons are high-power gamma rays, not x-rays. BTW unlike regular x-rays, at gamma energy levels you can actually activate matter, I.E. turn it radioactive.
Not wifi, wimax, 3g, 4g, ethernet, satellite, etc. All those tecnologies are just "last-mile" ways to bring data from this big pipes to the users. Internet is made of optical fibre.
Most modern digital oscilloscopes have USB interfaces and are controllable with C or a python api. For example, Rigol scopes have python drivers since some years ago.
The parkes telescope making history again. It is one of my favorites radiotelescopes, it was used to track the apollo 11 mission, and there is a movie documenting this that I highly recommend: http://www.imdb.com/title/tt0205873/
That huge CPU coupled with the memory and flash disk has to consume arround 200mw, no way it can last more than 1 hour on that tiny battery. IMHO cramming a 500 MB Linux distro into something that is basically a proxy for google services is a complete waste of resources.
Meet him once, he's awesome, very humble and funny in person. There is a documentary about him even before he became an astronaut. He certainly have the right stuff.
>The bible is a bunch of bullshit, its just a fact.
You are clearly trolling but I will bite. I think some of the bible advices are really good if you were born 2000 years ago. "Eat only this stuff" "Do not kill" "Rest at least a day every 7" all those stuff just makes sense. Then there is some fantastic stories and other wrong stuff like the age of the earth but hey, they were not scientist, we didn't have the Hubble back then.
If I understood the article, the reported RC4 weakness is known since so long ago there is a RFC about it (rfc4345) that TLS implementation just ignores. SSH also uses RC4 in a non-vulnerable way, and that's why it's not broken, and it's perfectly possible to have a secure RC4 algorithm by simply discarding the first N bytes, where N>1000.
IMHO even if Glass is clearly the superior device, it makes you look like a dork/nerd. There is no way to change that until they look like regular glasses. Until then, all you can do is attack your main competitor, the smarthpone, or it will go the way of the segway.
You'll also be surprised how many of the people who own their own successful businesses at those exclusive clubs never finished college.
What does this means? I'm not surprised if many business owners never finished college. I would be surprised if *most* of them didn't. But as you say, apparently most of them did have a degree.
Every car since 1990 logs dozens of internal variables that you can access via this protocol. No different that what tesla does. They didn't track the guy via GPS, they only published charge/discharge patterns from the battery.
>I'm still using a Thinkpad T60 from 2006, and I'm not that impressed with the build quality.
You laptop will be 7 years old soon. Try that with any other laptop, including Apple. They fall into pieces at the 3 year mark. I have a pile of old Thinkpad notebooks in my desk. They have become too slow to run new software, but they all work.
>All the energetic particles trapped during the journey have to go somewhere, and the researchers believe they would be blasted outward in a cone directly in front of the ship.
At that energy levels particles will be converted to gamma radiation, expelled outward in a burst. Maybe sombody already invented those ships.
I always wonder, why change the ABI so often? after all the instruction set is only the interface between the C compiler and the underlying VLIW CPU engine. That's why the first 64 bit processors were actually slower in 64 bit than in 32 bits, and even today they aren't that faster in 64-bit mode. I suspect is all a Patent game, that's why CPU designers keeps modifying the ABI. Their patents are expiring all the time.
1) Fire: You can build your entire machine on metal, that won't prevent the thing you are cutting from catching fire.
Nitrogen canister, regulator, pump to measure gas volume... enclosed container. Fire needs oxygen to burn.
The only deadly thing a Laser lacks is something that can explode and throw shrapnel at you. Now it have it.
2) Smoke: There's a reason most laser cutters have huge ventilation tubes. The laser will produce smoke, if you cut anything but wood it will be toxic smoke. Not good.
Seal the equipment in an air-tight chamber, vent it to atmosphere when safe or pass exhaust through activated-carbon.
Instead of toxic smoke now we have concentrated pressurized toxic smoke.
3) Laser: 40 watts is 100 times the power needed to instantly blind you. Lasers of that power are dangerous even bouncing on non-reflective surfaces. The laser is probable IR so invisible too.
Safety interlocks to prevent chamber from being opened while laser is active; Viewing ports made of laser-safe safety glass to absorb specific wavelength of laser beam (same as the safety goggles you should know to wear...).
Good luck absorbing 40 Watts in 0.1 mm^2 of glass though.
And IMHO the worst: The high-current high-voltage power source (10 KV or more) can instantly kill you.
Isolation transformer, sealed unit, zero-delay ground return fault interrupt from mains, capacitor buffered to smooth initial load during firing (which would otherwise trip the aforementioned). Proper grounding. Oh, and proper grounding. And proper. Fucking. Grounding.
Now you're right, these things are all dangerous and can kill you... but so can climbing into a hot tub if you're drunk. You can't make something perfectly safe, but you can make it reasonably safe. Your microwave also contains a power supply rated for similar voltages... and similar risks for body damage if the safeties are compromised.
Fair enough. When isolating the stuff remember 10 KV can kill you through a 5 cm air gap. Yes the microwave can kill you that's why there are no DIY microwaves.
Slashdot Mirror
From your link:
>The shot resulted in the highest DT neutron yield obtained to date, estimated at nearly 3 × 1015 (three quadrillion), or almost 8,000 joules of fusion energy
And then:
>All 192 NIF beams delivered 1.7 megajoules (MJ) to the hohlraum
That doesn't look like break even...
Fusion achieved. Sometimes we are awesome creatures, congrats to all involved.
And not a minute too soon.
Fair enough, just two questions:
1) An electron hitting an atom will produce photons with the same energy via the Bremsstrahlung effect. As electrons will hit atoms sometimes, 300 MeV electrons means you will have 300 MeV photons, right?
2) How much energy a photon needs to transmute an atom? I believe it's lower than 300 MeV (but as a commenter said, it's 300 MeV *per meter* so really you need a lot of those devices chained together for them to become dangerous, I guess)
Ahh didn't see it was 300 Mev *per meter*. Small detail, thanks!
Unless you can somehow turn down the volume of the device, 300 Mev photons are high-power gamma rays, not x-rays. BTW unlike regular x-rays, at gamma energy levels you can actually activate matter, I.E. turn it radioactive.
Not wifi, wimax, 3g, 4g, ethernet, satellite, etc.
All those tecnologies are just "last-mile" ways to bring data from this big pipes to the users. Internet is made of optical fibre.
Most modern digital oscilloscopes have USB interfaces and are controllable with C or a python api. For example, Rigol scopes have python drivers since some years ago.
The parkes telescope making history again. It is one of my favorites radiotelescopes, it was used to track the apollo 11 mission, and there is a movie documenting this that I highly recommend: http://www.imdb.com/title/tt0205873/
That huge CPU coupled with the memory and flash disk has to consume arround 200mw, no way it can last more than 1 hour on that tiny battery.
IMHO cramming a 500 MB Linux distro into something that is basically a proxy for google services is a complete waste of resources.
To think the amount of food, power, and time wasted in projects like this one... that only contributes to the ultimate heat-death of the universe.
He is great but he doesn't make miracles ;)
Meet him once, he's awesome, very humble and funny in person. There is a documentary about him even before he became an astronaut. He certainly have the right stuff.
I don't think I can walk for 6 hours, much less spacewalk, and I'm 30. The training of those guys is amazing.
>The bible is a bunch of bullshit, its just a fact.
You are clearly trolling but I will bite.
I think some of the bible advices are really good if you were born 2000 years ago.
"Eat only this stuff" "Do not kill" "Rest at least a day every 7" all those stuff just makes sense.
Then there is some fantastic stories and other wrong stuff like the age of the earth but hey, they were not scientist, we didn't have the Hubble back then.
If I understood the article, the reported RC4 weakness is known since so long ago there is a RFC about it (rfc4345) that TLS implementation just ignores. SSH also uses RC4 in a non-vulnerable way, and that's why it's not broken, and it's perfectly possible to have a secure RC4 algorithm by simply discarding the first N bytes, where N>1000.
Maybe he confused the games. Goro from the original Mortal Kombat was a motherfucker.
IMHO even if Glass is clearly the superior device, it makes you look like a dork/nerd.
There is no way to change that until they look like regular glasses. Until then, all you can do is attack your main competitor, the smarthpone, or it will go the way of the segway.
You'll also be surprised how many of the people who own their own successful businesses at those exclusive clubs never finished college.
What does this means? I'm not surprised if many business owners never finished college. I would be surprised if *most* of them didn't. But as you say, apparently most of them did have a degree.
Every car since 1990 logs dozens of internal variables that you can access via this protocol. No different that what tesla does. They didn't track the guy via GPS, they only published charge/discharge patterns from the battery.
>I'm still using a Thinkpad T60 from 2006, and I'm not that impressed with the build quality.
You laptop will be 7 years old soon. Try that with any other laptop, including Apple. They fall into pieces at the 3 year mark.
I have a pile of old Thinkpad notebooks in my desk. They have become too slow to run new software, but they all work.
I wonder, did the driver of the car hit by the wheel had remarkable driving skills or the car was stabilized by the ESP?
>All the energetic particles trapped during the journey have to go somewhere, and the researchers believe they would be blasted outward in a cone directly in front of the ship.
At that energy levels particles will be converted to gamma radiation, expelled outward in a burst. Maybe sombody already invented those ships.
You don't patent an ABI. If you do, then nobody could make compatible toolchains without paying to do so.
Alright Genius, I confused ABI with ISA.
How did your post get modded +2? Where have all the real geeks gone?
Thank for sharing you enormous knowledge, noy you can go back to your real-geek only club.
I always wonder, why change the ABI so often? after all the instruction set is only the interface between the C compiler and the underlying VLIW CPU engine. That's why the first 64 bit processors were actually slower in 64 bit than in 32 bits, and even today they aren't that faster in 64-bit mode.
I suspect is all a Patent game, that's why CPU designers keeps modifying the ABI. Their patents are expiring all the time.
1) Fire: You can build your entire machine on metal, that won't prevent the thing you are cutting from catching fire.
Nitrogen canister, regulator, pump to measure gas volume... enclosed container. Fire needs oxygen to burn.
The only deadly thing a Laser lacks is something that can explode and throw shrapnel at you. Now it have it.
2) Smoke: There's a reason most laser cutters have huge ventilation tubes. The laser will produce smoke, if you cut anything but wood it will be toxic smoke. Not good.
Seal the equipment in an air-tight chamber, vent it to atmosphere when safe or pass exhaust through activated-carbon.
Instead of toxic smoke now we have concentrated pressurized toxic smoke.
3) Laser: 40 watts is 100 times the power needed to instantly blind you. Lasers of that power are dangerous even bouncing on non-reflective surfaces. The laser is probable IR so invisible too.
Safety interlocks to prevent chamber from being opened while laser is active; Viewing ports made of laser-safe safety glass to absorb specific wavelength of laser beam (same as the safety goggles you should know to wear...).
Good luck absorbing 40 Watts in 0.1 mm^2 of glass though.
And IMHO the worst: The high-current high-voltage power source (10 KV or more) can instantly kill you.
Isolation transformer, sealed unit, zero-delay ground return fault interrupt from mains, capacitor buffered to smooth initial load during firing (which would otherwise trip the aforementioned). Proper grounding. Oh, and proper grounding. And proper. Fucking. Grounding.
Now you're right, these things are all dangerous and can kill you... but so can climbing into a hot tub if you're drunk. You can't make something perfectly safe, but you can make it reasonably safe. Your microwave also contains a power supply rated for similar voltages... and similar risks for body damage if the safeties are compromised.
Fair enough. When isolating the stuff remember 10 KV can kill you through a 5 cm air gap.
Yes the microwave can kill you that's why there are no DIY microwaves.