"structural strength" can have different meanings. Concrete has great structural strength when it comes to compressive forces, but is quite brittle and breaks if not re-inforced. Its not mentioned in the article and not clear to me from the source what the other critical properties are, or if they are addressed through construction/manufacturing techniques like sandwiching.
Meth head resistance might be a new concept they haven't though of!
You would think a 'foam' would be both good for both temperature and sound insulation. Sound insulation on a big ship would probably be a welcome quality as well.
Which is exactly how the standard works - except now the plug-in interface is standardized. So much nerdwhine over nothing with the HTML5 DRM stuff. Feel free to grab the "can't watch Netflix" version if it makes you happy. Not needing Silverlight (or Flash, or some other exploit delivery engine) makes me happy.
That's how I see it. I'll be happy to be able to watch Netflix on my HTPC in the same quality as a streaming device. It seems like we may have more flexibility in how we can get our Netflix. As far as I can tell, and I certainly am no expert, no existing feature or function of Firefox is lost.
Since the material is described as a foam, I assume the construction technique will be to sandwich it between metal sheets, so maybe it is not as exposed anyhow.
Given that TFA says that the Navy is using this foam for the deck of the USS Zumwalt, I'm betting that they have already thought up and answered more questions that the average slashdotter could have envisaged - and that they are happy with all of the answers.
Great, and I don't presume they haven't. If they want to talk about it being used in ships, why just talk about one property? I guess many/.ers like yourself only care about the hyped property, but I want to know what the other properties of this material are and I assume many others do to. Why write an article and leave out so much potentially interesting information? Laziness, lack of thoroughness?
Surprisingly, these materials aren't all that expensive, according to Gupta--the raw materials are common, and there are many factories that make syntactic foams. The difficulty is in the basic science of creating them and evaluating their properties. Gupta's lab has all sorts of machines to bend, twist, compress, pull, and otherwise stress-test a material.
"If there's a way to break something, we can do it here," he told me.
From the sounds of it, this aint his first rodeo, and has already thought of this stuff.
Maybe, just maybe, the man isn't an idiot?
I didn't say it wasn't thought of. It just is not discussed and that interests me if there is going to be some discussion of a real world use.
If there is going to be a press article about its use in ships, how about talking about more than one property? Is that unreasonable to ask?
ANd what are its other durability properties, like brittleness/flexibility/fracture toughness? . Ability to withstand piercing? Just because it can withstand tensile or compressive stress doesn't make it a good solution for ships.
PS contest quality is diluted by the number of contests. Multiple contest in day? Try to get more selective subject matter and give more time for creative entries and I think you'll see some good quality return. 1 per day max.
Yes, the data set is way to small to draw any conclusions,
Not necessarily. Pick a pool of 48 cars at random and compare the accident rates. You also have to compare them by the accident rate per hour behind the wheel.
How does picking another small sample make this small sample statistically relevant? Miles driven is as good or better than per hour.
Thin client has arrived after 30 years of talk, and its name is Chromebook. Not catching on like wildfire, but certainly more than any previous example I can think of.
To be fair, 2 of the accidents happened while under human control. That suggests that yes, the computers are at least as good as the humans... That said, the sample size is tiny, and critical info like miles driven is missing, so who knows.
And maybe the humans are required to take over in crowded parking lots and other places where these kind of fender benders take place.
So maybe this is telling us that Google should consider hiring older, more experienced drivers for these cars......
Yes, the data set is way to small to draw any conclusions, and key info like you say is not included, such as miles driven (only partially supplied), and where. And what are the rules for driving these vehicles autonomously vs manually? Are humans are taking over where there are more complicated or risky conditions such as a crowded parking lot?
Were talking 3 phase medium voltage, not single phase low voltage. Your anecdotes are not applicable in any sense. The only way to tie different medium voltage systems together is with a 3 phase transformer designed for the purpose.
I can see how you are confused, you are assuming your peripheral involvement with some low voltage electrical work gives you insight into medium voltage distribution systems, and that assumption is wrong. You probably think designing a large MV distribution system is simple. You probably don't know much about MV switchgear operation and how catastrophic faults can be. You sound like you don't understand 3 phase power in general.
You don't test medium voltage systems by 'flipping a switch' and seeing what happens. You stand a good chance of destroying equipment, and even killing someone.
I'll be happy to explain stuff to you if you want to learn, rather than assume.
Well, you can only do some much given the circumstances. Even if everything were accessible after the tsunami and everything they needed was on hand, I would say it would take a full day to get the needed functionality, which includes checking everything before you energize and cause more damage or kill someone. You might be able to basically hot wire a pump or two in a few hours in ideal situations with the right generator (proper size and voltage) available, enough cable, and enough of the right technicians. Pulling large cable through a tortuous path is quite labor intensive. But the actual scene was much more complicated, areas of the plant were not accessible and the needed equipment to deal with this event was not on hand. I am not sure how many technicians were on site at the time, I don't recall there being any more than a typical maintenance crew level but I can't really say.
Lets say you had a generator somewhere nearby but it was the wrong voltage, then you'd have to obtain the right transformer as well. And then its not just the cable, you need some electrical circuit protection equipment in place (breakers/switchger), fuel, cable termination tools and supplies,etc. Any supply that was sitting in an out-building was pretty much wiped away by the tsunami. These guys were in a really tough situation.
No, only the low voltage DC system worked for a period of time, but those systems don't power the heat removal required to keep the fuel cool. For that you need the medium voltages AC systems operable, but they were significantly damaged/impaired by the tsunami.
Like I predicted, you would say another ignorant thing. Care to do it again?
Slashdot Mirror
"structural strength" can have different meanings. Concrete has great structural strength when it comes to compressive forces, but is quite brittle and breaks if not re-inforced. Its not mentioned in the article and not clear to me from the source what the other critical properties are, or if they are addressed through construction/manufacturing techniques like sandwiching.
Meth head resistance might be a new concept they haven't though of!
You would think a 'foam' would be both good for both temperature and sound insulation. Sound insulation on a big ship would probably be a welcome quality as well.
Which is exactly how the standard works - except now the plug-in interface is standardized. So much nerdwhine over nothing with the HTML5 DRM stuff. Feel free to grab the "can't watch Netflix" version if it makes you happy. Not needing Silverlight (or Flash, or some other exploit delivery engine) makes me happy.
That's how I see it. I'll be happy to be able to watch Netflix on my HTPC in the same quality as a streaming device. It seems like we may have more flexibility in how we can get our Netflix. As far as I can tell, and I certainly am no expert, no existing feature or function of Firefox is lost.
or we could discuss it here. I posed the inquiry to start that discussion. Sorry if you are not interested. You've made it clear.
You could foam anything anything and make it lighter.
But the trick is that its also very strong. Its easy to achieve one property requirement, the more you add the harder it gets.
Since the material is described as a foam, I assume the construction technique will be to sandwich it between metal sheets, so maybe it is not as exposed anyhow.
"can be".. operative word there.
Given that TFA says that the Navy is using this foam for the deck of the USS Zumwalt, I'm betting that they have already thought up and answered more questions that the average slashdotter could have envisaged - and that they are happy with all of the answers.
Great, and I don't presume they haven't. If they want to talk about it being used in ships, why just talk about one property? I guess many /.ers like yourself only care about the hyped property, but I want to know what the other properties of this material are and I assume many others do to. Why write an article and leave out so much potentially interesting information? Laziness, lack of thoroughness?
From the sounds of it, this aint his first rodeo, and has already thought of this stuff.
Maybe, just maybe, the man isn't an idiot?
I didn't say it wasn't thought of. It just is not discussed and that interests me if there is going to be some discussion of a real world use.
If there is going to be a press article about its use in ships, how about talking about more than one property? Is that unreasonable to ask?
That crate makes quite a projectile.
ANd what are its other durability properties, like brittleness/flexibility/fracture toughness? . Ability to withstand piercing? Just because it can withstand tensile or compressive stress doesn't make it a good solution for ships.
Leading is best when the leader convinces people to do things willingly.
Your dog is deprived of a simple pleasure. Hooray for you.
No windows is a stupid idea, but just to be clear - the best you can hope for is crash resistant.
"Stupid" is an understatement.
"Just to be clear" is a pun.
Technically, the driver of a car never uses the windows in the door of the back seats.
You might need to take a driver safety refresher course.
..... Less re-starting.
And less crashing as well.
Then one solution could be to call forward to a personal phone. I'm not defending the tracking, just sayin....
PS contest quality is diluted by the number of contests. Multiple contest in day? Try to get more selective subject matter and give more time for creative entries and I think you'll see some good quality return. 1 per day max.
Yes, the data set is way to small to draw any conclusions,
Not necessarily. Pick a pool of 48 cars at random and compare the accident rates. You also have to compare them by the accident rate per hour behind the wheel.
How does picking another small sample make this small sample statistically relevant? Miles driven is as good or better than per hour.
In the 80s and 90s. X terminals and the like.
Thin client has arrived after 30 years of talk, and its name is Chromebook. Not catching on like wildfire, but certainly more than any previous example I can think of.
To be fair, 2 of the accidents happened while under human control. That suggests that yes, the computers are at least as good as the humans... That said, the sample size is tiny, and critical info like miles driven is missing, so who knows.
And maybe the humans are required to take over in crowded parking lots and other places where these kind of fender benders take place.
So maybe this is telling us that Google should consider hiring older, more experienced drivers for these cars......
Yes, the data set is way to small to draw any conclusions, and key info like you say is not included, such as miles driven (only partially supplied), and where. And what are the rules for driving these vehicles autonomously vs manually? Are humans are taking over where there are more complicated or risky conditions such as a crowded parking lot?
Were talking 3 phase medium voltage, not single phase low voltage. Your anecdotes are not applicable in any sense. The only way to tie different medium voltage systems together is with a 3 phase transformer designed for the purpose.
I can see how you are confused, you are assuming your peripheral involvement with some low voltage electrical work gives you insight into medium voltage distribution systems, and that assumption is wrong. You probably think designing a large MV distribution system is simple. You probably don't know much about MV switchgear operation and how catastrophic faults can be. You sound like you don't understand 3 phase power in general.
You don't test medium voltage systems by 'flipping a switch' and seeing what happens. You stand a good chance of destroying equipment, and even killing someone.
I'll be happy to explain stuff to you if you want to learn, rather than assume.
Well, you can only do some much given the circumstances. Even if everything were accessible after the tsunami and everything they needed was on hand, I would say it would take a full day to get the needed functionality, which includes checking everything before you energize and cause more damage or kill someone. You might be able to basically hot wire a pump or two in a few hours in ideal situations with the right generator (proper size and voltage) available, enough cable, and enough of the right technicians. Pulling large cable through a tortuous path is quite labor intensive. But the actual scene was much more complicated, areas of the plant were not accessible and the needed equipment to deal with this event was not on hand. I am not sure how many technicians were on site at the time, I don't recall there being any more than a typical maintenance crew level but I can't really say.
Lets say you had a generator somewhere nearby but it was the wrong voltage, then you'd have to obtain the right transformer as well. And then its not just the cable, you need some electrical circuit protection equipment in place (breakers/switchger), fuel, cable termination tools and supplies,etc. Any supply that was sitting in an out-building was pretty much wiped away by the tsunami. These guys were in a really tough situation.
No, only the low voltage DC system worked for a period of time, but those systems don't power the heat removal required to keep the fuel cool. For that you need the medium voltages AC systems operable, but they were significantly damaged/impaired by the tsunami.
Like I predicted, you would say another ignorant thing. Care to do it again?