No its not. Not even close. Unless we find some sort of uber magic turn matter into antimatter for free, that is simply not possible. The example below was a 1000TW mass driver for 100 years and the result was 36 microns per second of acceleration. More than 35000 tons of energy is used ie more than 350 tons of matter+antimatter per year.
Lets run the numbers. So at 30km/s and assume 1 shot per second. That is a 2300 ton projectile with 69x10^9 kg m/s of momentum per second. That is 2.1x10^20 kg m/s of momentum over 100 years. The mass of earth is 6x10^24. So the total change in velocity of earth is 36x10^-6 m/s , or 36 microns per second. So nothing really. This uses 7x10^15 kg of mass or 1 billionth the mass of earth. The total energy is 3x10^24 J of energy with a mass equivalence of 35000 tons of matter.
So you didn't bother to youtube, it happens. Pressure relive values typically don't have "work properly at 1000C" requirements. And How could you expect them to work. Steel is 1/3 its strength at 600C, Aluminum starts getting getting soft at 150C or so. One side of a tank can be at burst temp(with normal operating pressure) before the pressure relief value even gets to 100C.
you want to bet on that valve working in a fire? Or that the steel doesn't soften too under the heat? Sure they work sometimes. But there is plenety that didn't. A youtube search would get you a few.
I saw a car burn once. The heat is intense. You couldn't get within 30 feet (10m) of the thing. The fire brigade put it out before it exploded however. Since in NZ most cars have LPG or CNG tanks they can in fact explode.
The fire was not however caused by a crash, but a cigerette in the back seat.
We [Humans] are not good at killing each other despite popular opinion. Having serveral friends that were involed in fatal accidents [not them of course] that where not their fault and they were cleared of fault promtly by the police. I assure you the for vast majority of us it *does* matter if someone you don't know dies. It matters a great deal.
Added to that in this case, is that for a drunk driver he/she is most likely going to kill someone they know, someone you know.
Real freinds prevent that from happening. Even at the cost of the friendship.
Very few people can handel the emotioal cost of killing someone even in a genuine accedent. And in the case of drink driving there is a good chance that the person killed is at least another friend.
In reality or in the physical. It get quantum at some point. So even with zero noise any real parameter has finite bits for "perfect" representation. Then there is the noise issue. Real system don't match perfect math.
I know my physics. The angular momentum is transferred to/from the earth when things go up/down. This was thought about way back when these things where proposed. Really its not even hard to model, there is even the odd analysis floating around the net. You don't need much damping either to make the system stable. Finding a cable that is strong enough is the hard part and remains the hard part.
Actually, the big problem with a space elevator is that it will begin swinging uncontrollably if it lifts significant mass.
It is easy to show this is not true. The Tension is the cable is so massive the lateral forces from acceleration is more or less insignificant with tiny deflections only. You can even model the traveling waves these set up. Its not really a hard problem to deal with.
Not really. I am a NZ'er and I can tell you that the issue in NZ is no one like him at all. Despite the fact that it was an illegal raid or whatever he still just doesn't get any support from the general public. Basically we all know he is a total ass from other fairly public appearances that he has made.
I am a big fan of basic income systems. I think they would save *far* more money than current welfare schemes by just removing all the book keeping and bureaucracy that is currently spent deciding if you are eligible. It is simple, and economically is the same as all these low income tax breaks etc.
Even the rich are happier when the poor have a relatively decent standard of living.
Alas I have meet people that would be less happy. They measure their success and hence happiness by what they have that others don't. They don't like the idea that a "lazy" person could/should have a decent standard of living.
I happen to know its not true. I work with the medical school. There is nothing credible about a Cosmos article. About the only thing that would back that claim up.
Could not agree more. My intro was 4 pages, with about 3 pages of citations. My whole PhD thesis was only 70 pages long. I got very high praise from my markers.
I have never done an all niter (except to drink), and though i still get crunch time close to conferences. I typically get away with 50 hours a week at work or so. For crunch time.
What is the trick? Plan and manage your time properly. Reading/. all day is not a 80 hour week.
However there are others in the building where the PI feel that if you are not there weekends you are not dedicated to your work. But that is about managing expectations from your boss and is hardly limited to Academia.
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No its not. Not even close. Unless we find some sort of uber magic turn matter into antimatter for free, that is simply not possible. The example below was a 1000TW mass driver for 100 years and the result was 36 microns per second of acceleration. More than 35000 tons of energy is used ie more than 350 tons of matter+antimatter per year.
Lets run the numbers. So at 30km/s and assume 1 shot per second. That is a 2300 ton projectile with 69x10^9 kg m/s of momentum per second. That is 2.1x10^20 kg m/s of momentum over 100 years. The mass of earth is 6x10^24. So the total change in velocity of earth is 36x10^-6 m/s , or 36 microns per second. So nothing really. This uses 7x10^15 kg of mass or 1 billionth the mass of earth. The total energy is 3x10^24 J of energy with a mass equivalence of 35000 tons of matter.
Since working out if someone infringe on a patent takes a +1 year court battle. This seems at bit useless.
Also...buy local and what is in season, you'll get healthier, fresher food products to cook with that way.
Got a reference for that? I mean lots of folk want to parrot that line. But do you have any data what so ever to back it up?
So you didn't bother to youtube, it happens. Pressure relive values typically don't have "work properly at 1000C" requirements. And How could you expect them to work. Steel is 1/3 its strength at 600C, Aluminum starts getting getting soft at 150C or so. One side of a tank can be at burst temp(with normal operating pressure) before the pressure relief value even gets to 100C.
you want to bet on that valve working in a fire? Or that the steel doesn't soften too under the heat? Sure they work sometimes. But there is plenety that didn't. A youtube search would get you a few.
Thats nothing. *My* friend was there a few years ago and he saw the army just drive a tank over all these students!
I saw a car burn once. The heat is intense. You couldn't get within 30 feet (10m) of the thing. The fire brigade put it out before it exploded however. Since in NZ most cars have LPG or CNG tanks they can in fact explode.
The fire was not however caused by a crash, but a cigerette in the back seat.
Well that is stupid. Espesially when you consider there are places very close where he can do that legally.
Try parts of Europe. For example in Austria outside the main cities it is pretty ubiquitous.
We [Humans] are not good at killing each other despite popular opinion. Having serveral friends that were involed in fatal accidents [not them of course] that where not their fault and they were cleared of fault promtly by the police. I assure you the for vast majority of us it *does* matter if someone you don't know dies. It matters a great deal.
Added to that in this case, is that for a drunk driver he/she is most likely going to kill someone they know, someone you know.
Real freinds prevent that from happening. Even at the cost of the friendship.
Very few people can handel the emotioal cost of killing someone even in a genuine accedent. And in the case of drink driving there is a good chance that the person killed is at least another friend.
Lets see how that works with 256bit or even 512bit hashes.....
But that has nothing to do with the fact that there can/could be a physical process that can "compute" things a Turing machine cannot.
what are you talking about?
How so? The math of thermodynamics uses real numbers and does not need any "tricks" to make it work.
In reality or in the physical. It get quantum at some point. So even with zero noise any real parameter has finite bits for "perfect" representation. Then there is the noise issue. Real system don't match perfect math.
Are you asserting that Celestia is harder to install....
I know my physics. The angular momentum is transferred to/from the earth when things go up/down. This was thought about way back when these things where proposed. Really its not even hard to model, there is even the odd analysis floating around the net. You don't need much damping either to make the system stable. Finding a cable that is strong enough is the hard part and remains the hard part.
Actually, the big problem with a space elevator is that it will begin swinging uncontrollably if it lifts significant mass.
It is easy to show this is not true. The Tension is the cable is so massive the lateral forces from acceleration is more or less insignificant with tiny deflections only. You can even model the traveling waves these set up. Its not really a hard problem to deal with.
Not really. I am a NZ'er and I can tell you that the issue in NZ is no one like him at all. Despite the fact that it was an illegal raid or whatever he still just doesn't get any support from the general public. Basically we all know he is a total ass from other fairly public appearances that he has made.
Even the rich are happier when the poor have a relatively decent standard of living.
Alas I have meet people that would be less happy. They measure their success and hence happiness by what they have that others don't. They don't like the idea that a "lazy" person could/should have a decent standard of living.
I happen to know its not true. I work with the medical school. There is nothing credible about a Cosmos article. About the only thing that would back that claim up.
Could not agree more. My intro was 4 pages, with about 3 pages of citations. My whole PhD thesis was only 70 pages long. I got very high praise from my markers.
/. all day is not a 80 hour week.
I have never done an all niter (except to drink), and though i still get crunch time close to conferences. I typically get away with 50 hours a week at work or so. For crunch time.
What is the trick? Plan and manage your time properly. Reading
However there are others in the building where the PI feel that if you are not there weekends you are not dedicated to your work. But that is about managing expectations from your boss and is hardly limited to Academia.
Considering the average person needs 9 hours of sleep per night to stay healthy..
Citation required.