Since it might take a few hours before the complete outcome is clear, USGS does make automated prediction of casualties and damages, based on earthquake magnitude, location and population in the area. The result in this case is most likely no casualties, with a small chance for up to 10 people killed, and a most likely damage of somewhere between 100M$ and 1B$.
I hope my math is correct: Taking numbers from wikipedia, considering only units 2 and 3: both were in operation for a bit more than 29 years and were producing about 1 GW at full power. Ignoring any production time lost for maintenance (my guess is they would run with a duty cycle of 80-90%), the total amount of produced kWh would be: 29 years * 365 days/year * 24 hours/day * 2 GW = 5e14 Wh = 5e11 kWh. The price for the decommissioning would thus come down to around 4.4e9 $ / 5e11 kWh = 0.0086 $/kWh, so let's round it up to 1 cent per kWh. Average price for electricity in the US seems to be around 0.10 $/kW, so the cost for the decommissioning seems acceptable, though not negligible.
As you said, the low density of air at Mars might be a problem. The theoretical maximum power that can be harvested with a wind turbine is P = 1/2 * rho * A * V^3. Some numbers from Nasa show that the density rho is about 1% of the value on Earth, and an average speed of 10 m/s (around 5 Beaufort) is also not exceptional. Finally, you will need a relatively big mechanical device, which is hard to build light and reliable, since it has to survive a rocket launch.
Electrical power steering is much more common than you assume, especially in the last few years. I know that at least my 8 year old smallish European car has an electrical one.
I don't think Elon expected to win that easy, but look how much publicity he got for filing a simple claim and getting a temporary injunction. He got to say a few times how they are 4x cheaper than the old guys, that might be remembered by some press and politicians the next time there is a big contract up for grabs.
There was a similar incident in Viareggio 5 years ago: a train carrying LPG derailed and crashed into a platform in the center of town during the night. The resulting explosion killed 32 people and destroyed a whole block of houses. In this case it was LPG, not crude oil, so I guess a tiny leak would have been enough to cause problems. You would have to make the tanks extremely strong to prevent that. And there is even other dangerous goods, there were some nasty accidents with trains carrying chlorine, which doesn't need fire to kill people.
Since having this nightmare, I've exported my phone's VCF file to an online repo, made online notes of all my bank account numbers and passport ID, I keep ICE numbers with me at all times (separate from phone/wallet), and I've hidden a spare mobile phone and house key in a box in a nearby field. But there must be more to do!
I think the only thing left to do is buying loads of a aluminium foil.
It is about time that the FTC steps in and allows SpaceX to sell their rockets directly to the Air Force. Blame the rich local rocket dealerships, we corrupted their local politicians to create laws that are only designed to maintain their business model of selling old fashioned rockets. What people in the street want is to buy a next generation rocket, directly from the Internet, without having to talk to one of those sleazy rocket salesman. I am getting confused, you were saying Elon?
Data charges would be much less than that, $20 extra per ticket would be unacceptably high. Some spokesman for Inmarsat (who obviously has a big interest in making permanent data connections mandatory) said that data costs for such a flight would be on the order of 1$/hour for the whole aircraft. Data rates should also be pretty low, 1 GPS coordinate per minute would have helped enormously for both the AirFrance and MalaysiaAirlines crashes, the detailed high-bandwidth data you can always get from the black box if you can find it.
True story: The lecturer that taught us general relativity at university was a fantastic guy that was also pretty good at drawing cartoons. For one of the questions on the final exam, he drew a scene of a guy being stopped by a policeman: "I am stopping you for crossing the red light." "I saw it as green, I swear officer." "Fine, then I will write you a ticket for speeding." The question was to calculate the speed of the car, given the wavelengths of green and red light and the velocity of light.
contribute to society except for profit for themselves
Your opinion, fortunately we aren't slaves to one person's opinion as to what is valuable "to society". I am sure all the employees, their families, children, dogs, etc. of the HFTs, producers of all the networking and computing gear they use, the buildings and home they inhabit, the doctors they visit, and so on, might disagree with you about the lack of contribution to society.
That is a bad argument: People making money with organized crime spend money on employees, family and goods too, but that does not make it a good thing. If the HFT people would not be skimming billions of dollars from the market, millions of people might have received 100$ more since their pension fund would have done slightly better, and they would have spent it the same. What did the HFT contribute to society to rip off all those people?
HFT should be banned, there is nothing these robo-traders contribute to society except for profit for themselves. The argument that they provide for liquidity of the market, or whatever, would not change if everyone would be trading at second scale instead of microsecond scale. My proposal (as someone how knows nothing about stock markets): make it a level playing field and only allow trading at say exact 30 second intervals or so, which should be synced world-wide. In this way, the big firms would only have an advantage over the small guy when new information becomes available in the last half second before the deadline, instead of on every instance of new information. After everyone has placed their orders for the current round, the stock market then takes a few seconds to update all stock prizes, after which everyone has 'infinite time' to compute his action for the next round.
Scientist are still analyzing the data of ESA's Planck satellite, with first results expected in October this year. This instrument is supposedly sensitive enough to confirm or reject BICEP's results. I guess Planck's team must feel pretty depressed that the potential big discovery of their 700 MEuro instrument is scooped by the relatively small-scale BICEP experiment.
Note that this the second indirect evidence for the existence of gravitational waves, the first one was the orbital decay of a binary system that included a pulsar, discovered by Hulse and Taylor (Nobel Prize 1993). Today's result, if confirmed, seems pretty spectacular, and might be rewarded with a second Nobel Prize. For a first direct detection of gravitational waves, we have to wait for first detections by LIGO, Virgo and eLISA.
The LISA project has a long history, with several iterations of down-sizing its costs, and at some point the Americans pulled out of the project completely. The latest version of the project is called ELISA, which was recently approved as ESA's L3 mission in 2034. A bit late, but better than nothing...
Last year, I visited the Palazzo Valentini in Rome, which is just a few steps away from Piazza Venezia and within falling distance of Trajan's column. They dug up some Roman remains of houses and temples in the basement of a more modern building. They did quite some effort to make it into a multimedia show, with beamers projecting accurately aligned overlays of all kind of things that had disappeared. One cool effect was for example to extend a mosaic, of which only a small piece was left, over an entire room. I was observing how the tour-guide started the shows, he was just launching a VLC player or so on a linux box sitting in a rack in the corner. From the looks of the icons, it was probably an older version of Ubuntu (8.04 or 10.04).
There are two reasons you have to switch of your electronic devices during takeoff/landing: first, the electronic interference, which is not considered a problem anymore these days. The second, more unknown, reason is that they do not want you to listen to music so that you can hear the safety announcements. I am not talking about the usual 'live-vest is stored under your seat' story that everyone has heard 100 times, but instructions to evacuate in case of real emergencies. Since these emergencies happen mostly during the first and last few minutes of a flight, they want you to pay full attention. Source: close friend is instructor for flight crews.
With $3B at stake, that would be pretty risky poker play for Facebook. If Facebook knows it is a boondoggle, it is likely that SnapChat's owners know it too, so their best action would be to take the money and run.
I watched the webcast live. The qualification of the upgraded Falcon 9 seemed to have gone very well, with payloads deployed in nominal orbits. They were also supposed to do some first tests for recovering the first stage. The only thing that I could find was that the second of two burns after separation sent it into a spin, after which it crash-landed in the ocean. Anyone has some more news about that?
I remember seeing a presentation by these guys when they were probably still a recent startup company at Twente University, must have been around 15 years ago. Their sensor is build with MEMS technology and consists of 2 or 3 tiny wires (maybe 1x200 micron) that are suspended over a valley etched out of a silicon wafer. When these wires are heated up, a sideways airflow will cause tiny difference in temperature between the wires that can be read out by measuring the resistance. At the time, their target application was low-cost microphones for use in mobile telephones. IIRC, the sensitivity of this sensor had a sensitivity that rolls off as 1/f inherent to the involved physics and they were struggling with the noise at high frequencies in the reconstructed sound. Looking at their website, the sensor still looks exactly the same. Assuming no major breakthrough (I could imagine they lowered the noise by a factor 10 meanwhile, but not that they solved the 1/f problem), I guess the major change now is that they can do more fancy signal conditioning with a DSP in real time. Too bad they went for the military market, but I guess that is a way to slap a few 10-Euro sensors together and sell them as a 10kEuro package. Does anyone know what could be done with these direction sensitive flow-sensors that cannot be done with a phased-array of conventional microphones?
Maybe an even more important point they contributed is a large community. Cannonical took many years to build that up by marketing, providing infrastructure (forums, launchpad) and hand-picking the various pieces software that makes an distribution of things that work well together. This has several advantages: First, more users means more testing, more bug-reports and more people that can help you in a forum. Secondly, a large community means they created a critical mass to pressure hardware vendors to release drivers and companies like skype and adobe to release and maintain linux versions. No matter what they will do (go to slow, go to fast, screw up the odd sound drivers, try to make some money on the side), people will keep bitching about everything they do. I use Ubuntu because I like to bet on the winning horse: I know that my bugs will be fixed quicker if I stay with (one of the few) biggest distributions and I have a bigger chance that my hardware/software is supported. They might be the evil/non-ideal solution for now, but in the short turn it is more important to do make a strong block against Apple/Microsoft then to be as pure as possible. I can always switch to some better distribution later when linux as a whole has achieved world domination.
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Since it might take a few hours before the complete outcome is clear, USGS does make automated prediction of casualties and damages, based on earthquake magnitude, location and population in the area. The result in this case is most likely no casualties, with a small chance for up to 10 people killed, and a most likely damage of somewhere between 100M$ and 1B$.
I hope my math is correct: Taking numbers from wikipedia, considering only units 2 and 3: both were in operation for a bit more than 29 years and were producing about 1 GW at full power. Ignoring any production time lost for maintenance (my guess is they would run with a duty cycle of 80-90%), the total amount of produced kWh would be: 29 years * 365 days/year * 24 hours/day * 2 GW = 5e14 Wh = 5e11 kWh. The price for the decommissioning would thus come down to around 4.4e9 $ / 5e11 kWh = 0.0086 $/kWh, so let's round it up to 1 cent per kWh. Average price for electricity in the US seems to be around 0.10 $/kW, so the cost for the decommissioning seems acceptable, though not negligible.
As you said, the low density of air at Mars might be a problem. The theoretical maximum power that can be harvested with a wind turbine is P = 1/2 * rho * A * V^3. Some numbers from Nasa show that the density rho is about 1% of the value on Earth, and an average speed of 10 m/s (around 5 Beaufort) is also not exceptional. Finally, you will need a relatively big mechanical device, which is hard to build light and reliable, since it has to survive a rocket launch.
Great, one guy who actually owns the book takes a high resolution scan and puts it on the internet, everyone else prints it out and signs it ....
Electrical power steering is much more common than you assume, especially in the last few years. I know that at least my 8 year old smallish European car has an electrical one.
I don't think Elon expected to win that easy, but look how much publicity he got for filing a simple claim and getting a temporary injunction. He got to say a few times how they are 4x cheaper than the old guys, that might be remembered by some press and politicians the next time there is a big contract up for grabs.
There was a similar incident in Viareggio 5 years ago: a train carrying LPG derailed and crashed into a platform in the center of town during the night. The resulting explosion killed 32 people and destroyed a whole block of houses. In this case it was LPG, not crude oil, so I guess a tiny leak would have been enough to cause problems. You would have to make the tanks extremely strong to prevent that. And there is even other dangerous goods, there were some nasty accidents with trains carrying chlorine, which doesn't need fire to kill people.
I think the only thing left to do is buying loads of a aluminium foil.
It is about time that the FTC steps in and allows SpaceX to sell their rockets directly to the Air Force. Blame the rich local rocket dealerships, we corrupted their local politicians to create laws that are only designed to maintain their business model of selling old fashioned rockets. What people in the street want is to buy a next generation rocket, directly from the Internet, without having to talk to one of those sleazy rocket salesman. I am getting confused, you were saying Elon?
Data charges would be much less than that, $20 extra per ticket would be unacceptably high. Some spokesman for Inmarsat (who obviously has a big interest in making permanent data connections mandatory) said that data costs for such a flight would be on the order of 1$/hour for the whole aircraft. Data rates should also be pretty low, 1 GPS coordinate per minute would have helped enormously for both the AirFrance and MalaysiaAirlines crashes, the detailed high-bandwidth data you can always get from the black box if you can find it.
True story: The lecturer that taught us general relativity at university was a fantastic guy that was also pretty good at drawing cartoons. For one of the questions on the final exam, he drew a scene of a guy being stopped by a policeman: "I am stopping you for crossing the red light." "I saw it as green, I swear officer." "Fine, then I will write you a ticket for speeding." The question was to calculate the speed of the car, given the wavelengths of green and red light and the velocity of light.
contribute to society except for profit for themselves
Your opinion, fortunately we aren't slaves to one person's opinion as to what is valuable "to society". I am sure all the employees, their families, children, dogs, etc. of the HFTs, producers of all the networking and computing gear they use, the buildings and home they inhabit, the doctors they visit, and so on, might disagree with you about the lack of contribution to society.
That is a bad argument: People making money with organized crime spend money on employees, family and goods too, but that does not make it a good thing. If the HFT people would not be skimming billions of dollars from the market, millions of people might have received 100$ more since their pension fund would have done slightly better, and they would have spent it the same. What did the HFT contribute to society to rip off all those people?
The question is if it is not too late to introduce regulations. These leeches probably made enough money to corrupt Congress for the next 100 years.
HFT should be banned, there is nothing these robo-traders contribute to society except for profit for themselves. The argument that they provide for liquidity of the market, or whatever, would not change if everyone would be trading at second scale instead of microsecond scale. My proposal (as someone how knows nothing about stock markets): make it a level playing field and only allow trading at say exact 30 second intervals or so, which should be synced world-wide. In this way, the big firms would only have an advantage over the small guy when new information becomes available in the last half second before the deadline, instead of on every instance of new information. After everyone has placed their orders for the current round, the stock market then takes a few seconds to update all stock prizes, after which everyone has 'infinite time' to compute his action for the next round.
Scientist are still analyzing the data of ESA's Planck satellite, with first results expected in October this year. This instrument is supposedly sensitive enough to confirm or reject BICEP's results. I guess Planck's team must feel pretty depressed that the potential big discovery of their 700 MEuro instrument is scooped by the relatively small-scale BICEP experiment.
Note that this the second indirect evidence for the existence of gravitational waves, the first one was the orbital decay of a binary system that included a pulsar, discovered by Hulse and Taylor (Nobel Prize 1993). Today's result, if confirmed, seems pretty spectacular, and might be rewarded with a second Nobel Prize. For a first direct detection of gravitational waves, we have to wait for first detections by LIGO, Virgo and eLISA.
The LISA project has a long history, with several iterations of down-sizing its costs, and at some point the Americans pulled out of the project completely. The latest version of the project is called ELISA, which was recently approved as ESA's L3 mission in 2034. A bit late, but better than nothing ...
Exactly. I like the global menu in general, but almost once a day I close some underlaying window by accident, since it still has focus.
Last year, I visited the Palazzo Valentini in Rome, which is just a few steps away from Piazza Venezia and within falling distance of Trajan's column. They dug up some Roman remains of houses and temples in the basement of a more modern building. They did quite some effort to make it into a multimedia show, with beamers projecting accurately aligned overlays of all kind of things that had disappeared. One cool effect was for example to extend a mosaic, of which only a small piece was left, over an entire room. I was observing how the tour-guide started the shows, he was just launching a VLC player or so on a linux box sitting in a rack in the corner. From the looks of the icons, it was probably an older version of Ubuntu (8.04 or 10.04).
There are two reasons you have to switch of your electronic devices during takeoff/landing: first, the electronic interference, which is not considered a problem anymore these days. The second, more unknown, reason is that they do not want you to listen to music so that you can hear the safety announcements. I am not talking about the usual 'live-vest is stored under your seat' story that everyone has heard 100 times, but instructions to evacuate in case of real emergencies. Since these emergencies happen mostly during the first and last few minutes of a flight, they want you to pay full attention. Source: close friend is instructor for flight crews.
With $3B at stake, that would be pretty risky poker play for Facebook. If Facebook knows it is a boondoggle, it is likely that SnapChat's owners know it too, so their best action would be to take the money and run.
I watched the webcast live. The qualification of the upgraded Falcon 9 seemed to have gone very well, with payloads deployed in nominal orbits. They were also supposed to do some first tests for recovering the first stage. The only thing that I could find was that the second of two burns after separation sent it into a spin, after which it crash-landed in the ocean. Anyone has some more news about that?
I remember seeing a presentation by these guys when they were probably still a recent startup company at Twente University, must have been around 15 years ago. Their sensor is build with MEMS technology and consists of 2 or 3 tiny wires (maybe 1x200 micron) that are suspended over a valley etched out of a silicon wafer. When these wires are heated up, a sideways airflow will cause tiny difference in temperature between the wires that can be read out by measuring the resistance. At the time, their target application was low-cost microphones for use in mobile telephones. IIRC, the sensitivity of this sensor had a sensitivity that rolls off as 1/f inherent to the involved physics and they were struggling with the noise at high frequencies in the reconstructed sound. Looking at their website, the sensor still looks exactly the same. Assuming no major breakthrough (I could imagine they lowered the noise by a factor 10 meanwhile, but not that they solved the 1/f problem), I guess the major change now is that they can do more fancy signal conditioning with a DSP in real time. Too bad they went for the military market, but I guess that is a way to slap a few 10-Euro sensors together and sell them as a 10kEuro package. Does anyone know what could be done with these direction sensitive flow-sensors that cannot be done with a phased-array of conventional microphones?
Only when assuming a free and functioning economy with no collusion between insurance companies.
Maybe an even more important point they contributed is a large community. Cannonical took many years to build that up by marketing, providing infrastructure (forums, launchpad) and hand-picking the various pieces software that makes an distribution of things that work well together. This has several advantages: First, more users means more testing, more bug-reports and more people that can help you in a forum. Secondly, a large community means they created a critical mass to pressure hardware vendors to release drivers and companies like skype and adobe to release and maintain linux versions. No matter what they will do (go to slow, go to fast, screw up the odd sound drivers, try to make some money on the side), people will keep bitching about everything they do. I use Ubuntu because I like to bet on the winning horse: I know that my bugs will be fixed quicker if I stay with (one of the few) biggest distributions and I have a bigger chance that my hardware/software is supported. They might be the evil/non-ideal solution for now, but in the short turn it is more important to do make a strong block against Apple/Microsoft then to be as pure as possible. I can always switch to some better distribution later when linux as a whole has achieved world domination.