If we had a total of 60 million Americans instead of 350 million Americans our energy issues, our pollution issues, and most of our social issues would vanish quickly.
The US does have 350 million people, and increasing every day, so we have to deal with that fact. Are you willing to volunteer yourself and you family to die to bring about your 60 million population cap? I doubt it. Technology allows these population and we will find technologies to continue to support it.
When you put ice and soda in a chest the ice is in contact with the soda. The heat from the soda is absorbed by the much colder ice. The ice is chilling the soda not the air. The best way to cool soda is a mixture of half ice and half water as there is no insulating air and complete contact with the cooling medium. Stagnant air is a thermal insulator. That is how foam insulation works; It traps air in small pockets so that it can not move around and transfer heat.
Thay actuall don't work of the car is not moving and the fan is not spinning. That's the point; Be it air or water, the cooling medium needs to be moving. If the generator is stationary something has to move the cooling medium and that takes energy. Hence the question of how much net energy can coe out of such a system if attempted on a large scale.
Considering that we are trying to replace nuclear and fossil fuel power plants with green energy, upgrading current plants is not the solution. The point I am trying to make is that at night, during slack tide and during a storm very few green energy sources work. Solar needs sun, tidal needs water flow and wind turbines would be shut down so as to not over speed (even variable pitched blades have limits). If we had better ways of storing electricity the problems would be a lot smaller.
Andasol has a thermal storage system which absorbs part of the heat produced in the solar field during the day. This heat is then stored in a molten salt mixture of 60% sodium nitrate and 40% potassium nitrate. A turbine produces electricity using this heat during the evening, or when the sky is overcast. This process almost doubles the number of operational hours at the solar thermal power plant per year.[3] A full thermal reservoir holds 1,010 MWh of heat, enough to run the turbine for about 7.5 hours at full-load, in case it rains or after sunset.
A full charge on the solar storage will only last 7.5 hours. Here are a couple of issue with that; 1. Winter nights are longer than 7.5 hours. 2. One may not get a full charge during a stormy winter day. What is more needed is a way of storing enough energy to last days at a time to get through storms, etc. No insulation is perfect and some heat will be lost over a few days time. Thermal storage is great for short term storage but sorting enough energy may be beyond it's capability. PVs, which are widely used as a source of electricity, only work during the day.
A thermocell works by having a sharp temperature differential. Passive cooling does not cause a sharp temperate difference. Passive cooling also has a limitation as the surrounding air also becomes hot unless fans are used. Try running your computer without a case fan and see how long your passively cooled motherboard chip lasts.
I'm thinking solar. If this technology, coupled with tracking solar concentrators,
How do you keep the cold side cool? The thermocell works on temperature differential. Keep anything in the sun and it will become evenly hot. I think cooling the back side will take more energy than the cell will produce.
Solar does not work well during nigh or storms or at high latitudes. That is what I mean by the storage/transmission issue. Sure the Sahara can generate more solar electricity than we need. Getting to where and when we need it is a different story.
The electricity issue is not a generation issue. We have enough technology to produce more electricity that we need. The problems we have are transmission , storage, and reliability. While we can produce much more energy than we need the challenge is to store it for when we need it, transmit it to where we need it and to be sure that it will not fail. For example, solar farms in the Sahara desert could power all of Europe. The issue is transmitting that power to Northern Europe and storing enough power to last the night. While Some HVDC line are being installed it is not enough to get that power to Germany and north.
That was a deliberate attack on a house and whether or not there was fuel buildup was irrelevant. If the police wanted to start a fire they would have.
I also love how little you actually know about your area.
I thought that too until I did the math. 1G acceleration is about 22 mile/hours second. If one accelerates at one G for one second one is going 22 miles per hour. 4000/22 = 182 seconds. So basically a three minute acceleration at 1 G will get one to 4000mph. The summary also misquoted the story; the time was 45 minutes and not 30 minutes. I still wouldn't want to spend three minutes accelerated into my seat at 1G and then another 3 minutes pushed against the straps when slowing down.
Sorry but the writer of the article is incorrect; Here is the pertinent quite from the law;
(II) If the state, a county, a city and county, or a municipality detects any alleged violation of a municipal traffic regulation or a traffic violation under state law through the use of an automated vehicle identification system, then the state, county, city and county, or municipality shall serve the penalty assessment notice or summons and complaint for the alleged violation on the defendant no later than ninety days after the alleged violation occurred. If a penalty assessment notice or summons and complaint for a violation detected using an automated vehicle identification system is personally served, the state, a county, a city and county, or a municipality may only charge the actual costs of service of process that shall be no more than the amount usually charged for civil service of process.
The notice has to be served in 90 days. Notice it states that " If a penalty assessment notice or summons and complaint for a violation detected using an automated vehicle identification system is personally served...". That indicates that the notice need not be "personally served". That clause is there to stop authorities from effectively double fining by charging a high fee for personally serving notices.
If a capsule is traveling along at 4000mph what happens when it needs to alter course? How long would the curve need to be to alter the direction by five degrees?
The tube may work well in straight lines but building one completely straight is difficult if not impossible. There are mountains, valleys, cities, etc. that have to be compensated for. I am pretty sure passengers would not want to be on a roller coaster ride while going across the US.
Sure an absolutely straight tube would be great but the world is not straight.
The most striking thing to me has always been that both actors would have been within their rights, under "Stand Your Ground," to not run away if attacked by the other.
FTFY. The "Stand Your Ground" law does not allow one to attack; it just allows one to not run away.
You are taking the "my back yard" thing to literally. In downtown Victoria in the commercial/residential district where no "back yards" exist there are people who fight against 15 story buildings because they are too high and block views/sunlight. It is not an issue with densifying single family areas but densifying already commercial areas. It is not an issue of building an apartment where there never was one but building a 15 story building to replace the 5 story building that was there.
Look at just about every city in the U.S. that grew up since the 1920s or 1930s.
Things have changed in the last 80 years. Land close to downtown is used up. We are now having to commute further and further to work. These are bad things.
The issue is that there is only so much land. As population increase we can either use more land or build higher. Using more land is a bad idea as it causes transportation and pollution issues.
If your oxygen concentrator doesn't run for 9 hours
There are other reasons that solar flares that cause power outages. If one's life depends on concentrated oxygen one should have a backup supply to last a few days.
you can't keep your insulin cold for 9 hours
According to the FDA insulin will last quite a while without refrigeration.
Insulin products contained in vials or cartridges supplied by the manufacturers (opened or unopened) may be left unrefrigerated at a temperature between 59F and 86F for up to 28 days and continue to work. However, an insulin product that has been altered for the purpose of dilution or by removal from the manufacturer’s original vial should be discarded within two weeks.
There are many reasons power can be out for quite a while; weather, earthquake, equipment failure, etc. The point is that short term, less than a few days, without power should be able to be handled by individuals. If a catastrophe is going to happen if the power goes out for a few days there is a much bigger issue than space weather.
PS. I see this as another misuse of a word to sensationalize a story. Space weather may cause local problems but not catastrophes.
If your theory was true then few people would buy condos in the dense areas. If they were so hard to sell there would be few developers applying to build large buildings. Developers build to meet demand. If there was no demand there would be no big buildings. While many would prefer a house with a garden, few can afford it and/or want to commute that far. Go to a development permit hearing and you will see what stops densification. My ex girlfriend was the executive director of a local developer group. I have been to many development permit hearings and the main detractors have been NIMBYs who do not want change.
Except that Big Oil won't like that and similarly none of the politicians in the pockets of Big Oil will be in favor of that.
"Big Oil" is becoming the "Hitler" of the environment debate. Everything bad is caused by "Big Oil". In many cases that is not true.
The major obstacle to denser urban planning which would allow more people to live near amenities and therefore need fewer cars is the people who live there. Go to any rezoning application and there will be people who live near by the site who are against the project. These people are not controlled by big oil; that just want their neighborhood to stay the same. They don't want larger buildings with more people in them. The problem with this mind set is that there are more people on earth every day and they have to live somewhere. Development is like a balloon.; if you don't allow it to build taller it will build outward. That causes the spreading of development and longer commutes.
I guess you should actually check your facts before posting. According to this page there has been 9 fires in the San Bernadino national Forest in the last year alone.
The other point is that the fire was started on the house do fuel buildup was not a factor.
A similar strategy is actually in use right now in forest management. It used to be that every forest fire was put out as fast as possible no matter when it happened. It was found that brush and other fuel built up so that when a fire started in a dry season it was a disaster. While most trees can survive a slow fire if it gets hot enough the trees die. Recently there have been controlled burns and slow moving fires have been allowed to burn. If you live in a forest and do not maintain a fire break around your house it is your fault.
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If we had a total of 60 million Americans instead of 350 million Americans our energy issues, our pollution issues, and most of our social issues would vanish quickly.
The US does have 350 million people, and increasing every day, so we have to deal with that fact. Are you willing to volunteer yourself and you family to die to bring about your 60 million population cap? I doubt it. Technology allows these population and we will find technologies to continue to support it.
When you put ice and soda in a chest the ice is in contact with the soda. The heat from the soda is absorbed by the much colder ice. The ice is chilling the soda not the air. The best way to cool soda is a mixture of half ice and half water as there is no insulating air and complete contact with the cooling medium. Stagnant air is a thermal insulator. That is how foam insulation works; It traps air in small pockets so that it can not move around and transfer heat.
http://www.cbc.ca/news/business/story/2013/04/18/business-carney-banks-bail-in.html
Thay actuall don't work of the car is not moving and the fan is not spinning. That's the point; Be it air or water, the cooling medium needs to be moving. If the generator is stationary something has to move the cooling medium and that takes energy. Hence the question of how much net energy can coe out of such a system if attempted on a large scale.
Considering that we are trying to replace nuclear and fossil fuel power plants with green energy, upgrading current plants is not the solution. The point I am trying to make is that at night, during slack tide and during a storm very few green energy sources work. Solar needs sun, tidal needs water flow and wind turbines would be shut down so as to not over speed (even variable pitched blades have limits).
If we had better ways of storing electricity the problems would be a lot smaller.
From the linked Wikipedia article:
Andasol has a thermal storage system which absorbs part of the heat produced in the solar field during the day. This heat is then stored in a molten salt mixture of 60% sodium nitrate and 40% potassium nitrate. A turbine produces electricity using this heat during the evening, or when the sky is overcast. This process almost doubles the number of operational hours at the solar thermal power plant per year.[3] A full thermal reservoir holds 1,010 MWh of heat, enough to run the turbine for about 7.5 hours at full-load, in case it rains or after sunset.
A full charge on the solar storage will only last 7.5 hours. Here are a couple of issue with that;
1. Winter nights are longer than 7.5 hours.
2. One may not get a full charge during a stormy winter day.
What is more needed is a way of storing enough energy to last days at a time to get through storms, etc. No insulation is perfect and some heat will be lost over a few days time.
Thermal storage is great for short term storage but sorting enough energy may be beyond it's capability. PVs, which are widely used as a source of electricity, only work during the day.
A thermocell works by having a sharp temperature differential. Passive cooling does not cause a sharp temperate difference. Passive cooling also has a limitation as the surrounding air also becomes hot unless fans are used. Try running your computer without a case fan and see how long your passively cooled motherboard chip lasts.
I'm thinking solar. If this technology, coupled with tracking solar concentrators,
How do you keep the cold side cool? The thermocell works on temperature differential. Keep anything in the sun and it will become evenly hot. I think cooling the back side will take more energy than the cell will produce.
Solar does not work well during nigh or storms or at high latitudes. That is what I mean by the storage/transmission issue. Sure the Sahara can generate more solar electricity than we need. Getting to where and when we need it is a different story.
The electricity issue is not a generation issue. We have enough technology to produce more electricity that we need. The problems we have are transmission , storage, and reliability. While we can produce much more energy than we need the challenge is to store it for when we need it, transmit it to where we need it and to be sure that it will not fail. For example, solar farms in the Sahara desert could power all of Europe. The issue is transmitting that power to Northern Europe and storing enough power to last the night. While Some HVDC line are being installed it is not enough to get that power to Germany and north.
A disarmed populace is just a crop of victims waiting to be harvested.
Really? India seemed to do pretty well with passive resistance against the UK.
I think you misunderstood the statement. I believe the GP was talking about being harvested by criminals not related to governments.
That was a deliberate attack on a house and whether or not there was fuel buildup was irrelevant. If the police wanted to start a fire they would have.
I also love how little you actually know about your area.
Close but no cigar. The law states that "harm" is not enough.
imminent death or great bodily harm to himself or herself or another or to prevent the imminent commission of a forcible felony
So no, you can not shoot someone because you think he is going to punch you in the nose.
That assumes the vehicle will be going in an exactly straight line from start to finish. Corners and inclines at 4000mph could be an issue.
I thought that too until I did the math. 1G acceleration is about 22 mile/hours second. If one accelerates at one G for one second one is going 22 miles per hour. 4000/22 = 182 seconds. So basically a three minute acceleration at 1 G will get one to 4000mph. The summary also misquoted the story; the time was 45 minutes and not 30 minutes. I still wouldn't want to spend three minutes accelerated into my seat at 1G and then another 3 minutes pushed against the straps when slowing down.
Sorry but the writer of the article is incorrect; Here is the pertinent quite from the law;
(II) If the state, a county, a city and county, or a municipality detects any alleged violation of a municipal traffic regulation or a traffic violation under state law through the use of an automated vehicle identification system, then the state, county, city and county, or municipality shall serve the penalty assessment notice or summons and complaint for the alleged violation on the defendant no later than ninety days after the alleged violation occurred. If a penalty assessment notice or summons and complaint for a violation detected using an automated vehicle identification system is personally served, the state, a county, a city and county, or a municipality may only charge the actual costs of service of process that shall be no more than the amount usually charged for civil service of process.
The notice has to be served in 90 days. Notice it states that " If a penalty assessment notice or summons and complaint for a violation detected using an automated vehicle identification system is personally served...". That indicates that the notice need not be "personally served". That clause is there to stop authorities from effectively double fining by charging a high fee for personally serving notices.
If a capsule is traveling along at 4000mph what happens when it needs to alter course? How long would the curve need to be to alter the direction by five degrees?
The tube may work well in straight lines but building one completely straight is difficult if not impossible. There are mountains, valleys, cities, etc. that have to be compensated for. I am pretty sure passengers would not want to be on a roller coaster ride while going across the US.
Sure an absolutely straight tube would be great but the world is not straight.
The most striking thing to me has always been that both actors would have been within their rights, under "Stand Your Ground," to not run away if attacked by the other.
FTFY. The "Stand Your Ground" law does not allow one to attack; it just allows one to not run away.
You are taking the "my back yard" thing to literally.
In downtown Victoria in the commercial/residential district where no "back yards" exist there are people who fight against 15 story buildings because they are too high and block views/sunlight. It is not an issue with densifying single family areas but densifying already commercial areas. It is not an issue of building an apartment where there never was one but building a 15 story building to replace the 5 story building that was there.
Look at just about every city in the U.S. that grew up since the 1920s or 1930s.
Things have changed in the last 80 years. Land close to downtown is used up. We are now having to commute further and further to work. These are bad things.
The issue is that there is only so much land. As population increase we can either use more land or build higher. Using more land is a bad idea as it causes transportation and pollution issues.
If your oxygen concentrator doesn't run for 9 hours
There are other reasons that solar flares that cause power outages. If one's life depends on concentrated oxygen one should have a backup supply to last a few days.
you can't keep your insulin cold for 9 hours
According to the FDA insulin will last quite a while without refrigeration.
Insulin products contained in vials or cartridges supplied by the manufacturers (opened or unopened) may be left unrefrigerated at a temperature between 59F and 86F for up to 28 days and continue to work. However, an insulin product that has been altered for the purpose of dilution or by removal from the manufacturer’s original vial should be discarded within two weeks.
There are many reasons power can be out for quite a while; weather, earthquake, equipment failure, etc. The point is that short term, less than a few days, without power should be able to be handled by individuals. If a catastrophe is going to happen if the power goes out for a few days there is a much bigger issue than space weather.
PS. I see this as another misuse of a word to sensationalize a story. Space weather may cause local problems but not catastrophes.
If your theory was true then few people would buy condos in the dense areas. If they were so hard to sell there would be few developers applying to build large buildings. Developers build to meet demand. If there was no demand there would be no big buildings. While many would prefer a house with a garden, few can afford it and/or want to commute that far.
Go to a development permit hearing and you will see what stops densification. My ex girlfriend was the executive director of a local developer group. I have been to many development permit hearings and the main detractors have been NIMBYs who do not want change.
Except that Big Oil won't like that and similarly none of the politicians in the pockets of Big Oil will be in favor of that.
"Big Oil" is becoming the "Hitler" of the environment debate. Everything bad is caused by "Big Oil". In many cases that is not true.
The major obstacle to denser urban planning which would allow more people to live near amenities and therefore need fewer cars is the people who live there. Go to any rezoning application and there will be people who live near by the site who are against the project. These people are not controlled by big oil; that just want their neighborhood to stay the same. They don't want larger buildings with more people in them. The problem with this mind set is that there are more people on earth every day and they have to live somewhere. Development is like a balloon.; if you don't allow it to build taller it will build outward. That causes the spreading of development and longer commutes.
I guess you should actually check your facts before posting. According to this page there has been 9 fires in the San Bernadino national Forest in the last year alone.
The other point is that the fire was started on the house do fuel buildup was not a factor.
There is an APU battery near the back too.
A similar strategy is actually in use right now in forest management. It used to be that every forest fire was put out as fast as possible no matter when it happened. It was found that brush and other fuel built up so that when a fire started in a dry season it was a disaster. While most trees can survive a slow fire if it gets hot enough the trees die. Recently there have been controlled burns and slow moving fires have been allowed to burn. If you live in a forest and do not maintain a fire break around your house it is your fault.
All you do is re-scan the iris every few years. I bet that will be less often than the number of times the key card gets lost.