Far too much emphasis on "people of color" in this article (and to be pedantic my color is white so I am a person of color, the color is white). If it was about the clearly dubious logic of banning people who match the name+birthdate of someone else then I would agree with this - it is a terrible criteria. Not comfortable about a racist agenda creeping into the article though.
Not John Smith born 1/1/1990 although I am sure there are loads of them.
"Not much else is known: Its power is strangely classified, but the laser likely operates in the 15 to 50 kilowatt range"...
"It also presumably excludes the cost of shipboard electrical power, likely in the thousands of watts, that would be needed."
Impressive efficiency, lasers do well to be 10% efficient so 100KW would be a decent baseline power. They should have said hundreds of thousands of watts.
Probably just bad editing but not a good sign about this article.
This is simple - tell your children the pros and cons and let them make their own decisions. At age 17 they can choose which way to go, it is really not upto you to decide their futures beyond this point.
There is no way to distinguish binary data from encrypted terrorism. A entire encrypted disk that asks for a password is clearly encrypted and the lawyers can have much fun deciding what this means but what if I have a few Gb of data from some obscure program on a dedicated logger partition. In this case there is no immediate way to prove that this is not encrypted (commie propaganda/terrorism/insider trading/worry of the day) data, this is not hypothetical - I am sure that it is done today. Does this mean that people are guilty until someone produces a app that can read a binary file? Even this is not the end of if because if I was a halfway cunning terrorist I would write a app that happily decodes my nefarious data as something innocuous.
It will not be long before it is possible to have 2 or more passwords that decrypt into entirely different results - it might already happen but what will happen when this is common? It is the kind of thing that the legal system needs to be able to deal with.
Think of a ground frost. At night thermal radiation from the ground goes through the atmosphere resulting in cooling but air can only radiate weakly (it is transparent) so cools far less. The result is that the ground ends up colder than the air.
White in the visible and black in the infra red. Not exactly a new idea but based on the strange words they are using I suspect that they are trying to patent this.
Given that all the power from the PU-238 will eventually be converted into heat in the lander (10% via electricity) this is 320W of heat that needs to be dissipated. For a lander sitting on ice this could seriously affect the results - it would certainly vaporize some of the surroundings.
Looking at the original link http://www.themarysue.com/marv... they are redefining Thor as the being that holds Mjölnir. Which is tough on the demigod Thor who happened to be the wielder of Mjölnir. They do seem to have confused Mjölnir and Thor but I am sure this is entirely deliberate and I am equally sure that nobody really cares. Comic books take religion/mythology and rework it as seems commercially appropriate but this one does seem to be gratuitous - they could have used a generic costumed superhero where retirement and replacement is normal (Watchmen) but replacing immortal(ish) gods is a bit much.
Thor the son of Odin. http://www.rosala-viking-centr...
Hmm. Costumed superheroes can move on from generation to generation as done well in Watchmen but genuine gods are surely a bit more stable.
If you buy a car then you are buying a complex machine with many failure modes. There is a huge business dedicated to saying that these failure modes are due to human failure or engineering oversight. Both are possible but the human element dominates - at a guess for every mechanical/software failure there are at least 100 human failures. The insurance industry loves this kind of issue. I suspect that when safe computer controlled cars become practical the insurers are going to be a issue.
If you are responsible for a subsystem and you discover a potential fault then the temptation to quietly fix it in future versions and not worry about the 'probably OK' past is huge. This is human nature but the company needs to have schemes in place to allow people to say that something is wrong without worrying about being sacked.
Oh for some mod points. +1 to that. In a previous job I had my own office and could really get into things but now in a open plan the interruptions are endless.
Quote from the linked article
"These findings point to an increase of up to two orders of magnitude – a hundredfold- in concentrations of strontium-90 in the sea, with respect to the background values for this part of the Pacific before the Fukushima accident".
I am guessing that the background levels of strontium-90 are going to be minute, I am impressed that it is even detectable, this feels like a 100 times almost nothing is still almost nothing.
Sharks with frikkin' lasers are old school. Be afraid of carp with particle beams!
And I know that the real purpose of the NIF is bomb research but as a side effect it is still a good physics experiment. The only worry is that the results are always going to be filtered by security concerns so some results are going to vanish - this makes it trickier to use as a source of data but still good (rose tinted glasses? I hope not).
IMHO the NIF is a excellent tool in researching the properties of ultra dense materials be they fusable or not and is up there with CERN as a high energy physics lab and it covers bulk phenomena that CERN can never touch. I expect papers on Rayleigh–Taylor instability, neutron absorption cross sections and tests on the theoretical reaction probabilities/speeds of H,D fusion. But (and you all knew I was about to say that) this is a research tool on the subjects I just mentioned and many others not a step towards a fusion power source. This is a excellent research tool and I fully support it - just don't think of it as a proto-proto-proto type fusion power plant.
Personally I cant stand the long adverts at insane volumes pushed down the PA system of planes. Loads of 'buy our gifts' and 'this is our hire car partner' sometimes in several languages so this can go on for 10 minutes. Why is it always blasted out at ear bleeding volume? I would prefer phones, at least then you can complain to the noisy person and at least have a theoretical chance of peace.
MS-DOS 5, luxury!
I worked with some clunky and unreliable WORM optical disks that only worked with DOS 4. That OS was so buggy that if you tried to access a missing floppy you had to reboot the machine.
It is a competition and he is using logic and statistics to use the optimal strategy - well done! He is actually teaching algorithms to anyone who is taking note. I have heard of a TV program somewhere which was a '20 questions' format to identify a word. someone did a binary chop search and had a guaranteed win - the program was cancelled. The shocking thing about this is that the people who planned the program did not realise that there was a trivial solution but they probably had degrees in something ending with studies. I remember the link to this but can't find it - annoying.
Batteries don't like the cold. This is inevitable and just physics/chemistry in action. If battery powered cars are going to work in cold conditions then then preheaters of the batteries will be required. For combustion based engines preheaters of the engine block are required but they do at least have the theoretical option of burning fuel to heat the engine upto a usable temperature. This is just something that battery based vehicles are going to have to deal with. If they need to have a feature to dump some power to heat things up then so be it - that is just the way that batteries are going to work but it is not a show stopper - just something that needs to be designed in.
The concept of 'magical undetectable matter' seems ludicrous from our day to day perspective but viewed from the point of view of physics it makes perfect sense.
There are several forces (= ways for matter to interact). Not all forms of matter are affected by all these forces. For example neutrinos are oblivious to the electromagnetic and strong nuclear force which is why they can casually pass through what we think of as solid matter. Solid really means something that interacts with the electromagnetic force which holds particles together into what we call solid, liquid, gas and plasma.
Neutrinos only interact with the weak nuclear force and gravity which is why they are so hard to detect - the weak force is puny and only rarely causes a neutrino to 'hit' something. To make 'dark matter' all that we need to postulate is a particle that does not even interact with the weak force. Such particles would be invisible and intangible to almost any sensor. There really is no reason to think that such a particle is impossible and given that it is so hard to make any measurements on it is not surprising that physicists are vague on the details.
Slashdot Mirror
Far too much emphasis on "people of color" in this article (and to be pedantic my color is white so I am a person of color, the color is white). If it was about the clearly dubious logic of banning people who match the name+birthdate of someone else then I would agree with this - it is a terrible criteria. Not comfortable about a racist agenda creeping into the article though. Not John Smith born 1/1/1990 although I am sure there are loads of them.
"Not much else is known: Its power is strangely classified, but the laser likely operates in the 15 to 50 kilowatt range" ...
"It also presumably excludes the cost of shipboard electrical power, likely in the thousands of watts, that would be needed."
Impressive efficiency, lasers do well to be 10% efficient so 100KW would be a decent baseline power. They should have said hundreds of thousands of watts.
Probably just bad editing but not a good sign about this article.
This is simple - tell your children the pros and cons and let them make their own decisions. At age 17 they can choose which way to go, it is really not upto you to decide their futures beyond this point.
There is no way to distinguish binary data from encrypted terrorism. A entire encrypted disk that asks for a password is clearly encrypted and the lawyers can have much fun deciding what this means but what if I have a few Gb of data from some obscure program on a dedicated logger partition. In this case there is no immediate way to prove that this is not encrypted (commie propaganda/terrorism/insider trading/worry of the day) data, this is not hypothetical - I am sure that it is done today. Does this mean that people are guilty until someone produces a app that can read a binary file? Even this is not the end of if because if I was a halfway cunning terrorist I would write a app that happily decodes my nefarious data as something innocuous. It will not be long before it is possible to have 2 or more passwords that decrypt into entirely different results - it might already happen but what will happen when this is common? It is the kind of thing that the legal system needs to be able to deal with.
Think of a ground frost. At night thermal radiation from the ground goes through the atmosphere resulting in cooling but air can only radiate weakly (it is transparent) so cools far less. The result is that the ground ends up colder than the air.
In a vacuum you use this to control the temperature of a spacecraft http://en.wikipedia.org/wiki/M...
White in the visible and black in the infra red. Not exactly a new idea but based on the strange words they are using I suspect that they are trying to patent this.
Given that all the power from the PU-238 will eventually be converted into heat in the lander (10% via electricity) this is 320W of heat that needs to be dissipated. For a lander sitting on ice this could seriously affect the results - it would certainly vaporize some of the surroundings.
Looking at the original link http://www.themarysue.com/marv... they are redefining Thor as the being that holds Mjölnir. Which is tough on the demigod Thor who happened to be the wielder of Mjölnir. They do seem to have confused Mjölnir and Thor but I am sure this is entirely deliberate and I am equally sure that nobody really cares. Comic books take religion/mythology and rework it as seems commercially appropriate but this one does seem to be gratuitous - they could have used a generic costumed superhero where retirement and replacement is normal (Watchmen) but replacing immortal(ish) gods is a bit much.
Thor the son of Odin. http://www.rosala-viking-centr... Hmm. Costumed superheroes can move on from generation to generation as done well in Watchmen but genuine gods are surely a bit more stable.
If you buy a car then you are buying a complex machine with many failure modes. There is a huge business dedicated to saying that these failure modes are due to human failure or engineering oversight. Both are possible but the human element dominates - at a guess for every mechanical/software failure there are at least 100 human failures. The insurance industry loves this kind of issue. I suspect that when safe computer controlled cars become practical the insurers are going to be a issue.
If you are responsible for a subsystem and you discover a potential fault then the temptation to quietly fix it in future versions and not worry about the 'probably OK' past is huge. This is human nature but the company needs to have schemes in place to allow people to say that something is wrong without worrying about being sacked.
Oh for some mod points. +1 to that. In a previous job I had my own office and could really get into things but now in a open plan the interruptions are endless.
Quote from the linked article "These findings point to an increase of up to two orders of magnitude – a hundredfold- in concentrations of strontium-90 in the sea, with respect to the background values for this part of the Pacific before the Fukushima accident". I am guessing that the background levels of strontium-90 are going to be minute, I am impressed that it is even detectable, this feels like a 100 times almost nothing is still almost nothing.
Always the problem with fusion, the proto(ns) tend to miss.
Sharks with frikkin' lasers are old school. Be afraid of carp with particle beams! And I know that the real purpose of the NIF is bomb research but as a side effect it is still a good physics experiment. The only worry is that the results are always going to be filtered by security concerns so some results are going to vanish - this makes it trickier to use as a source of data but still good (rose tinted glasses? I hope not).
IMHO the NIF is a excellent tool in researching the properties of ultra dense materials be they fusable or not and is up there with CERN as a high energy physics lab and it covers bulk phenomena that CERN can never touch. I expect papers on Rayleigh–Taylor instability, neutron absorption cross sections and tests on the theoretical reaction probabilities/speeds of H,D fusion. But (and you all knew I was about to say that) this is a research tool on the subjects I just mentioned and many others not a step towards a fusion power source. This is a excellent research tool and I fully support it - just don't think of it as a proto-proto-proto type fusion power plant.
Smokers have to go outside to indulge - just a thought.
Personally I cant stand the long adverts at insane volumes pushed down the PA system of planes. Loads of 'buy our gifts' and 'this is our hire car partner' sometimes in several languages so this can go on for 10 minutes. Why is it always blasted out at ear bleeding volume? I would prefer phones, at least then you can complain to the noisy person and at least have a theoretical chance of peace.
"literally seen a brick received in a Dell laptop box"? Seriously?
MS-DOS 5, luxury! I worked with some clunky and unreliable WORM optical disks that only worked with DOS 4. That OS was so buggy that if you tried to access a missing floppy you had to reboot the machine.
It is a competition and he is using logic and statistics to use the optimal strategy - well done! He is actually teaching algorithms to anyone who is taking note. I have heard of a TV program somewhere which was a '20 questions' format to identify a word. someone did a binary chop search and had a guaranteed win - the program was cancelled. The shocking thing about this is that the people who planned the program did not realise that there was a trivial solution but they probably had degrees in something ending with studies. I remember the link to this but can't find it - annoying.
Batteries don't like the cold. This is inevitable and just physics/chemistry in action. If battery powered cars are going to work in cold conditions then then preheaters of the batteries will be required. For combustion based engines preheaters of the engine block are required but they do at least have the theoretical option of burning fuel to heat the engine upto a usable temperature. This is just something that battery based vehicles are going to have to deal with. If they need to have a feature to dump some power to heat things up then so be it - that is just the way that batteries are going to work but it is not a show stopper - just something that needs to be designed in.
The concept of 'magical undetectable matter' seems ludicrous from our day to day perspective but viewed from the point of view of physics it makes perfect sense. There are several forces (= ways for matter to interact). Not all forms of matter are affected by all these forces. For example neutrinos are oblivious to the electromagnetic and strong nuclear force which is why they can casually pass through what we think of as solid matter. Solid really means something that interacts with the electromagnetic force which holds particles together into what we call solid, liquid, gas and plasma. Neutrinos only interact with the weak nuclear force and gravity which is why they are so hard to detect - the weak force is puny and only rarely causes a neutrino to 'hit' something. To make 'dark matter' all that we need to postulate is a particle that does not even interact with the weak force. Such particles would be invisible and intangible to almost any sensor. There really is no reason to think that such a particle is impossible and given that it is so hard to make any measurements on it is not surprising that physicists are vague on the details.
plus a few more characters to say what 'AP Computer Science Test' is. Relevant links are https://en.wikipedia.org/wiki/... https://en.wikipedia.org/wiki/...