Just wanted to second the other responses to this post (3rd? 4th?) -- I purchased a 15" PB a month ago, and it's running great. No dead pixels, trackpad scrolling works great, backlit keyboard looks awesome. I added an extra 256MB of RAM after I got (be careful with those little screws, I almost stripped one) and it runs OS X fast!
I get about 3.5 hours of battery life when running a typical workload (e-mail, web browsing, other stuff). Haven't tried doing something like DVD playback off the battery yet.
The only issue I have (and I understand other people have this problem) is that under certain lighting conditions, the auto-dimmer gets a bit to aggressive, resulting in it changing the lighting level of the display too frequently. Usually it's when there's a directional light source and I'm accidentally shading the sensor with my hand as I type (for example, in my office, the window is to my right, and I shade the sensor with my left hand on the keyboard as I type). It's not actually I big problem, since I just turn off auto-dimming when I notice it happening.
Anyway, sorry you had such a bad experience with your PB. Four of my friends recently purchased PowerBooks and I haven't heard of anyone having the problems that you did! It certainly would have turned me off of Apple if it had happened to me!
the lack of magnetic field allows the solar wind to blow the rest of the atmosphere away.. we would have to continually replenish the atmosphere making it uneconomical.
The important thing for terraforming would be the rate at which the atmosphere is lost due to the solar wind; I don't have exact figures on hand, but since Mars retains some atmosphere 4 GYr after it's formation, I can't imagine that it's substantial. At worst, this would force you to add more materials to the Martian atmosphere (perhaps through altering the orbits of medium-sized comets so that they burn up in the Martian atmosphere) every several thousand years or so, something that the low gravity on Mars would require you to do anyway.
Terraforming, I'm afraid, will never be economical, regardless of the march of progress.
No, it's not correct. The primality of a number is independent of the base chosen to represent it. You can't divide 0101 (5) by 0010 (2) and get an integer answer, regardless of the base used to denote those two integers.
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Just wanted to second the other responses to this post (3rd? 4th?) -- I purchased a 15" PB a month ago, and it's running great. No dead pixels, trackpad scrolling works great, backlit keyboard looks awesome. I added an extra 256MB of RAM after I got (be careful with those little screws, I almost stripped one) and it runs OS X fast!
I get about 3.5 hours of battery life when running a typical workload (e-mail, web browsing, other stuff). Haven't tried doing something like DVD playback off the battery yet.
The only issue I have (and I understand other people have this problem) is that under certain lighting conditions, the auto-dimmer gets a bit to aggressive, resulting in it changing the lighting level of the display too frequently. Usually it's when there's a directional light source and I'm accidentally shading the sensor with my hand as I type (for example, in my office, the window is to my right, and I shade the sensor with my left hand on the keyboard as I type). It's not actually I big problem, since I just turn off auto-dimming when I notice it happening.
Anyway, sorry you had such a bad experience with your PB. Four of my friends recently purchased PowerBooks and I haven't heard of anyone having the problems that you did! It certainly would have turned me off of Apple if it had happened to me!
The important thing for terraforming would be the rate at which the atmosphere is lost due to the solar wind; I don't have exact figures on hand, but since Mars retains some atmosphere 4 GYr after it's formation, I can't imagine that it's substantial. At worst, this would force you to add more materials to the Martian atmosphere (perhaps through altering the orbits of medium-sized comets so that they burn up in the Martian atmosphere) every several thousand years or so, something that the low gravity on Mars would require you to do anyway.
Terraforming, I'm afraid, will never be economical, regardless of the march of progress.
No, it's not correct. The primality of a number is independent of the base chosen to represent it. You can't divide 0101 (5) by 0010 (2) and get an integer answer, regardless of the base used to denote those two integers.