I had a T21(3?) and a T30, they are very good, sort of. I didn't have a single problem with the T21 or T23. The T30 was OK, I only got a crashed hard drive and a broken wireless card, and the blue tooth some time refused to work. Some time ago, the CPU fan began to make some strange noise. So I tried to buy a new fan from IBM/Lenova website, but I was not sure which one is the correct part. So I called, after talking with at least 5 people at different places, they transfered me to an answer machine, which told me "Go to our website please." Then I put a drop of machine oil to the fan assembly, then the T30 worked perfectly. Anyway I bought a Macbook pro some time later.
No matter which way the sun light goes, it ends up as heat and radiate back to the universe in the infrared spectrum. And there are some molecules like CO2, CH4 and water can absorb those infrared, so this is the green house effect. If there are too much CO2 in the air, we get too much heat preserved on our planet. But using photovoltaic, we can cut down the amount of CO2 we dumped into the atmosphere, so solar energy can reduce the green house effect. And relieve the so called global warming.
You have a solar panel can produce X watt, it cost you Y dollar, you use it for Z hours. now you produced X * Z watt-hour energy. But you bought the panel of X watt for Y dollars.
How much bandwidth you need to access the memory if you use all those cores? How much memory you are going to feed to the cores? And how much power those DRAM will consume?
The kg-gallon comparison is based on energy. The fuel cell's efficiency is about 2-3 times higher than the efficiency of gas internal combustion engines.
According to an article published at Popular Mechanics last summer, the cost to make hydrogen is $3 per kg on a GE's 10' x 20' machine. It looks pretty easy indeed.
Food industry actually using CO2 at very large scale. Super critical CO2 is a very powerful solvent, it has been used to remove caffeine from coffee or tea, to extract rose oil from the flower...
CO2 is used as protective gas in many welding cases.
In semiconductor area, dry ice is used to remove particles from silicon wafers. It is very interesting, small dry ice particles are shoot on to the surface of silicon wafer, the wafer and particles are cooled to a very low temperature, because the thermal expansion rate are different, the particles separate from the wafer. Then because the dry ice release large amount of gas, the particles get blown away.
CO2 has also been used to fill green houses to certain degree. When people try to grow algae for biofuel, they pump CO2 into the pond. You can never harvest algae on the open sea.
Methanol can be made from CO2 and water either. But I remember methanol is made together with the hydrogen from natural gas, or actually hydrogen is a by product of making methanol from natural gas. I need to check my chemistry book here.
The last and the most important, urea is made of CO2 and NH3. We are talking several, if not tens, million ton of CO2 per year here.
Yeah, I know how the solar power cells are made, to me, a piece of PV cell is no more dirty than a piece of anodized aluminum. And in the long run, it is very clean technology compare to other energy converting technologies.
The CO2 generated during the CH4 split process can be collected and used as raw material for some industrial applications. But the CO2 generated from our car's engine can't be collected. This is the difference.
I was looking at the Tesla car this morning, I noticed that it has 450lbs. of batteries, the I was think at that time "Imaging a truck that hauls 10 tons of cargo, do I need 5 tons of batteries? What's the effect of all these batteries on every bridge the truck crosses?" Then I checked the energy density of hydrogen and lithium battery, I found that you need 1500kg of lithium ion batteries to contain same amount of energy in 1kg of hydrogen, while 1kg of hydrogen has the same amount of energy of 1 gallon of gas. I do notice on the chart from wikipedia that there is a kind of battery name "Lithium Thionyl Chloride Battery" has very high energy density, but they are not rechargeable. Based on these data, I am not convinced that the battery is a pure better solution for transportation than hydrogen fuel cell hybrid configuration.
"Solar power? Would be cheap, but the production of those solar cells is creating a horrible amount of waste and they're far from efficient. Wind power? Even worse."
Could you specify how much is "a horrible amount of" please? From what I have known, they are much cleaner than a horse or a donkey. Also the efficiency of commercial solar power cells are much higher than that of the grass or trees.
Singapore and Malaysia. If you look at a Chinese wikipedia page, you will find it gives you choice of displaying the page in "Mainland simplified Chinese", "Taiwan traditional Chinese", "Singapore-Malaysia simplified Chinese" and "Hongkong-Macao traditional Chinese".
One more thing is an input method developed my some of my friends recently, with this input method, only mouse is needed to write Chinese on a computer. You can download it at http://sbsrf.cn/ and try it.
Actually I have 350MHz Apple PowerPC G3 running as webserver also, I put 512M RAM and a big hard drive on it. And several people in my group happily using it as a place to put their family photos, blogs, blahblah... And I am also running a mySQL and Tomcat on it. 10 years ago is just the words jumped into my mind.
Slashdot Mirror
I had a T21(3?) and a T30, they are very good, sort of. I didn't have a single problem with the T21 or T23. The T30 was OK, I only got a crashed hard drive and a broken wireless card, and the blue tooth some time refused to work. Some time ago, the CPU fan began to make some strange noise. So I tried to buy a new fan from IBM/Lenova website, but I was not sure which one is the correct part. So I called, after talking with at least 5 people at different places, they transfered me to an answer machine, which told me "Go to our website please." Then I put a drop of machine oil to the fan assembly, then the T30 worked perfectly. Anyway I bought a Macbook pro some time later.
Maintenance.
No matter which way the sun light goes, it ends up as heat and radiate back to the universe in the infrared spectrum. And there are some molecules like CO2, CH4 and water can absorb those infrared, so this is the green house effect. If there are too much CO2 in the air, we get too much heat preserved on our planet. But using photovoltaic, we can cut down the amount of CO2 we dumped into the atmosphere, so solar energy can reduce the green house effect. And relieve the so called global warming.
You have a solar panel can produce X watt, it cost you Y dollar, you use it for Z hours. now you produced X * Z watt-hour energy. But you bought the panel of X watt for Y dollars.
The energy density can be 200+W per square meter. I consider this is very high. http://www.ez2c.de/ml/solar_land_area/ has more information.
I don't know how much people can be consider "most". But I know all the people don't want to pay utility bills.
Solar and windmills make subtle effect to environment while coal power plant makes significant if not dramatic effect on the environment.
Solar and fusion may ultimately solve our energy quest together.
How much bandwidth you need to access the memory if you use all those cores? How much memory you are going to feed to the cores? And how much power those DRAM will consume?
The annoying things will be washed away while the really useful things will flourish. Welcome to the web Ad 2.0.
The kg-gallon comparison is based on energy. The fuel cell's efficiency is about 2-3 times higher than the efficiency of gas internal combustion engines.
According to an article published at Popular Mechanics last summer, the cost to make hydrogen is $3 per kg on a GE's 10' x 20' machine. It looks pretty easy indeed.
This is much better than I expected.
Food industry actually using CO2 at very large scale. Super critical CO2 is a very powerful solvent, it has been used to remove caffeine from coffee or tea, to extract rose oil from the flower...
CO2 is used as protective gas in many welding cases.
In semiconductor area, dry ice is used to remove particles from silicon wafers. It is very interesting, small dry ice particles are shoot on to the surface of silicon wafer, the wafer and particles are cooled to a very low temperature, because the thermal expansion rate are different, the particles separate from the wafer. Then because the dry ice release large amount of gas, the particles get blown away.
CO2 has also been used to fill green houses to certain degree. When people try to grow algae for biofuel, they pump CO2 into the pond. You can never harvest algae on the open sea.
Methanol can be made from CO2 and water either. But I remember methanol is made together with the hydrogen from natural gas, or actually hydrogen is a by product of making methanol from natural gas. I need to check my chemistry book here.
The last and the most important, urea is made of CO2 and NH3. We are talking several, if not tens, million ton of CO2 per year here.
A Popular mechanics article of last summer said it would be $3 per kilogram.
Creation without distribution is the solution.
As you guys are talking about distribution, did you ever realize that alcohol can't be distributed via the current pipeline system too?
Yeah, I know how the solar power cells are made, to me, a piece of PV cell is no more dirty than a piece of anodized aluminum. And in the long run, it is very clean technology compare to other energy converting technologies.
The CO2 generated during the CH4 split process can be collected and used as raw material for some industrial applications. But the CO2 generated from our car's engine can't be collected. This is the difference.
I was looking at the Tesla car this morning, I noticed that it has 450lbs. of batteries, the I was think at that time "Imaging a truck that hauls 10 tons of cargo, do I need 5 tons of batteries? What's the effect of all these batteries on every bridge the truck crosses?" Then I checked the energy density of hydrogen and lithium battery, I found that you need 1500kg of lithium ion batteries to contain same amount of energy in 1kg of hydrogen, while 1kg of hydrogen has the same amount of energy of 1 gallon of gas. I do notice on the chart from wikipedia that there is a kind of battery name "Lithium Thionyl Chloride Battery" has very high energy density, but they are not rechargeable. Based on these data, I am not convinced that the battery is a pure better solution for transportation than hydrogen fuel cell hybrid configuration.
Could you specify how much is "a horrible amount of" please? From what I have known, they are much cleaner than a horse or a donkey. Also the efficiency of commercial solar power cells are much higher than that of the grass or trees.
I use 7zip.
No, mouse movement is always slower than typing. Actually, they aim for smart phone market and lazy people, who don't like to type.
Again?
Singapore and Malaysia. If you look at a Chinese wikipedia page, you will find it gives you choice of displaying the page in "Mainland simplified Chinese", "Taiwan traditional Chinese", "Singapore-Malaysia simplified Chinese" and "Hongkong-Macao traditional Chinese".
People input Chinese by either typing the pronunciation or certain encoding in alpha beta. http://en.wikipedia.org/wiki/Chinese_input_methods _for_computers is a poor introduction of Chinese input method on wikipedia.
One more thing is an input method developed my some of my friends recently, with this input method, only mouse is needed to write Chinese on a computer. You can download it at http://sbsrf.cn/ and try it.
I told everybody complaining vi... I am so sorry.
"iPhone-like features with a programmable device", "actually open phone platforms", http://www.openmoko.com/
Actually I have 350MHz Apple PowerPC G3 running as webserver also, I put 512M RAM and a big hard drive on it. And several people in my group happily using it as a place to put their family photos, blogs, blahblah... And I am also running a mySQL and Tomcat on it. 10 years ago is just the words jumped into my mind.