the 'V' shaped arrangement (H-O-H) of the atoms in the H2O molecule result in a slight misalignment of the electron clouds of the atoms, causing a small electric dipole moment capable of bonding other nearby similarly configured molecules into chains.
Hydrogen bonding and the dipole moment of a molecule are two separate phenomena.
Hydrogen bonding has to do with the electron affinity of the atom a hydrogen atom is bonded to. When hydrogen is bonded to a small, electronegative atom, especially fluorine, oxygen, or nitrogen, the electronegative atom withdraws the electrons from the hydrogen atom. This causes the hydrogen to have a slightly positive charge while the other atom has a slightly negative charge. Since these atoms are small this results in a quite high charge density. Since positive and negative charges attract, if the positive on one molecule comes near a negative on another molecule they will attract strongly and will form something similar to a bond, but without electron sharing. Mix a lot of these molecules together and the substance that results will have a higher boiling point, increased surface tension, etc because the molecules are holding on to each other more tightly.
Dipole moment works along similar lines but has to do with the overall shape of a molecule. If you have a molecule where the charge is distributed asymmetrically (more negative on one side than the other) then the molecule will have a dipole moment. In water this does happen because of the V-shape - the oxygen at the apex of the V-shape draws the electrons away from the hydrogens at the tips of the V-shape causing the molecule to have a negative side and a positive side. However a molecule such as carbon dioxide is linear, it looks like O=C=O. The oxygens at each end are slightly negative and the carbon is slightly positive but the molecule has virtually no dipole moment because the charges are symmetrical.
So you can have molecules that have hydrogen bonding but little dipole moment (NH3 - ammonia), molecules that have a dipole moment but no hydrogen bonding (CH3Cl - chloromethane), molecules that have both (H2O - water), and molecules that have neither (CH3 - methane).
I was basicly stating that at the birth of modern science, it was not differentiated from the occult sciences and many of the earliest discoveries were direct outcroppings of the occult sciences gaining enough true understanding to begin making rational predictions.
I agree that we can not dismiss the discoveries of people before the true defining of the scientific method. Certainly much was discovered before the methodology was firmly defined. Unfortunately there was also much that was made obscure by improper testing and verification of theories. We are seeing a resurgence of this with many of the herbal remedies being offered to the public. Sure, plant extracts have been known to have effects on our health but until we know precisely the cause and effects (and side-effects) of these extracts we will be more harmed than helped by them. This includes a complete understanding of the factors of how these extracts react with each other, a factor largely ignored by the holistic health community.
Remember that prior to the scientific method it was as common to describe a health problem as being driven by imps and pixies as it was by humors as it was by the state of your sanitation systems. It was not until these theories were examined scientifically that the most effective explanation was weeded out and used to improve our lot in life. Prior to the scientific method progress was extremely slow and followed many false paths, often staying stuck in a erroneous assumption for several generations. Yes "occult sciences" were occasionally correct, but can not be considered to be anything like true science.
Obviously you understand the difference between the two but increasingly it seems that more people do not understand the differences. It seems that they simply assume that scientists are discovering information about the universe using the same methods as the local palm reader down the street.
On a side note, most of the traditional Occult Sciences (alchemy, astrology etc.) were, like some fields of physics, models of how the universe works based primarly upon observation with little experimentation. As our observational abilities increased, and our extended abilities to do experiments on things that were previously only observable came to light, these occult sciences morphed into hard sciences. The important thing to note, is that there is NO LINE between the two.
There actually is a fairly big difference between the "occult sciences" of the past and the modern study of science. The difference is the Scientific Method. The modern study of the sciences have very little to do with "observation with little experimentation". In order for a study to be scientific it needs to be repeatable for several different observers. Most of the "occult sciences" that you refer to have little to no repeatability except on the grossest of scales.
Theories that are not supported by observation and experimentation are simply conjecture and not true science. Even Einstein's famous theories of relativity were looked upon skeptically until the predictions made by those theories were observed under the direction of several independent laboratories.
Most importantly, however, is that there is no good scientist who would purport to have the ultimate unshakable theory. Every decent scientist will fully admit that his theories only support the evidence seen so far and that later on the theories might be discovered to be wrong or need to be revised. Science is not occult, science is logical, methodic, and based on the premise that a subject need only be studied to be understood. Furthermore, science has traditionally been a fairly open study that all can partake in, as opposed to the very definition of occult as inscrutable, mysterious, and hidden:
occult: 1. Of, relating to, or dealing with supernatural influences, agencies, or phenomena. 2. Beyond the realm of human comprehension; inscrutable. 3. Available only to the initiate; secret: occult lore. See synonyms at mysterious. 4. Hidden from view; concealed.
science: 1a. The observation, identification, description, experimental investigation, and theoretical explanation of phenomena.
The American Heritage(R) Dictionary of the English Language: Fourth Edition.2000.
does it automagically feed aspirin into your passed out body's mouth
All joking aside, God I hope not. Using aspirin while drinking could very well kill you. Aspirin inactivates some key enzymes that neutralize alcohol in your body. Taking aspirin just before, during, or just after drinking could cause your blood alcohol levels to shoot up much faster than normal, causing severe damage.
Tylenol is also bad for a drinker because it has a severe liver toxicity when combined with alcohol. In fact Tylenol and ethanol on their own can be bad for your liver, combine them and they become worse for your liver than you would expect.
The best cure for a hangover is a little more alcohol and lots of Gatorade. The alcohol takes the edge of the mini-withdrawal you undergo and the Gatorade keeps you hydrated and replaces vital lost electrolytes and sugars. I've found that lemon-lime Gatorade and gin is actually a decent combination.
BTW software updater was already automaticly fetching the update in the background while I read this. It's really nice when you don't have to wait while downloading them. I don't understand what's the big fuss of letting the OS fetch updates in the background, as long as it doesn't install them. I'm not sure but I think software update does only download the important updates...
Yep, only critical updates are automatically downloaded and even that is optional. In fact the whole process is optional. You can tell the operating system to never check for updates on its own and you can choose to ignore updates.
Software Update is pretty flexible and non-obtrusive. The only thing that I wish is that it had an option to allow me to register and de-register other programs for it to check. That way if the author of a program allowed it I could have Software Update automatically check for updates from him in addition to those from Apple.
Re:Eerily reminiscent of my Windows days...
on
Friday Security Fun
·
· Score: 4, Informative
The compositing is done by the video card (remember, Quartz Extreme only accelerates compositing!), but much of the drawing is done by the CPU. The Dock's genie effect, in particular, is drawn by software.
Both of the Dock minimization effects are handled by the GPU. The window is drawn as normal by the application that owns it and is passed off to Quartz Extreme, which then hands it off to the GPU with the appropriate rendering commands. With the scale effect that is a simple scale command, with the genie effect there is stretching and scaling. All of this is done through Open GL commands.
If by "fix" you mean "break a lot of functionality on sites" then yes, that certainly is an option.
That's why I love OmniWeb. It allows you to accept cookies, but throw them out when you quit the browser. Sure I lose such nifty "features" as not having to log into some websites but I also cut ads and whatnot of the ability to track me across sites for long periods.
Honestly, there need to be much better built-in controls on all browsers for limiting a server's access to data on your computer.
According to dictionary.com's definitions for occult one fits Physics perfectly: 2. # Beyond the realm of human comprehension; inscrutable.
While that may be some people's view of the study of physics, that is not what study of physics is based on. The study of physics is based around the belief that through careful observation, theorization, and experimentation we should be able to discover anything we want to know about physics. In other words physicists believe that physics is not inscrutable but is instead able to be discovered and understood.
Before someone flames me for calling the new Starbuck a bitch, I want to make it clear that I have nothing whatsoever against women as action heros.
You know, I'd have far less problems with Apollo being a woman and Starbuck being a man than the other way around. Starbuck's big charm was his machismo, changing him to a woman is a much further-ranging change from the original series than changing Apollo would be.
As for Boomer, fine make him into a woman, I have no problems with women being equal as pilots or any other job.
The thought of someone peeking over my shoulder or stealing the laptop is a serious issue.
Set up an encrypted partition on the laptop and make sure you sync it up when you get home so if it is stolen you lose little data. When you work outside the home just work with your back to the wall, I'm sure you'll notice if someone is trying to sneak a peek. Set a hotkey to blank the screen or lock out the laptop quickly for when you need it.
It's really not as big of a risk as you might think. I work outside the office all the time and I can tell you that it comes fairly naturally once you find a few places that are comfortable.
Anyone with even moderate knowledge of the QuickTime APIs could implement code to do this with minimal effort. It's trivial. I myself have written code that re-encodes the protected AAC's to MP3 so that I can play them on an old Rio that I still use sometimes. It's such a small bit of obvious code that I've never bothered to distribute it; anyone who needs it can produce it themselves. Hell, it may even be available here. If not, one of the QuickTime samples requires only small modifications to make it work.
Well this code certainly points you in the right direction.
Basically Apple has never really made its DRM to be a mighty fortress never destined to be gotten around. It's more like a speed bump designed to placate the RIAA into allowing Apple to sell the music.
i guess not all of us have read the 256MB to 8GB RAM G5 test results...
Actually that's about what I'd expect for a program like Photoshop and large files. Photoshop is not a typical home or small office application, it has much higher system and memory demands. If you notice what I said was:
After about 512 megs of RAM you don't see much speedup for normal tasks. Large databases and such will improve with gigs of memory but for normal home and office use 256 is absolute minimum, 384 is the minimum preferred and 512 is plenty.
When using programs such as Safari and Microsoft Office you are not likely to see much improvement with large amounts of memory. On the other hand someone who is a programmer, digital artist, filmmaker, database programmer, etc. is more likely to be doing the types of activities that can benefit from large amounts of RAM. With those people a couple of gigs of RAM is a good thing indeed.
MacOSX is fundamentally minor tweaks on proven technology and proven interface design, using a proven operating system that's older than the Mac itself. I don't see why anybody thinks MacOSX is cutting edge.
Mac OS X is cutting edge for the simple fact that it is the first OS to combine all of these proven technologies (and many more) into a package that just works and is slick to boot. Individually these technologies are nothing new but combined they represent the cutting edge of OS design.
One nitpick: the kernel is Mach (well, Mach-based), the BSD tools are layered on top of that (along with GNU, NextStep, and much more)
Oh, just try running OS X on 8gig box vs. 256mb or so one... The difference in responsivness is tremendous.
After about 512 megs of RAM you don't see much speedup for normal tasks. Large databases and such will improve with gigs of memory but for normal home and office use 256 is absolute minimum, 384 is the minimum preferred and 512 is plenty.
I currently have 1.5 gigs of RAM just because it was cheap and I occasionally do some larger tasks, but I almost never use it all. I've had this machine up for days and running all sorts of programs and compiling projects and right now I have 600 megs of RAM inactive and 560 megs free. Basically I'm only using 340 megs of RAM or so at this moment (4 or 5 user processes running)
Mining itself does not make sense as a first step. The first step is power generation. We need to place a few microwave transmitting solar power stations into orbit first. Then we could use some of that energy to drive lasers that would push materials into space at a low cost. Then we could use those technologies and materials to build bases to mine from.
The benefits of this sort of progression is that when the power satellites are not being used to push spacecraft they can be used to generate almost 100% clean energy with no chemical pollutants, particulates, radioactive waste, damming of rivers, or CO2 emissions. The power stations would pay for themselves quickly and would actually have the space program generating revenue rather than just being a cost.
I have a red sign on my door. It says "If this sign is blue, you're going too fast."
Is there a Doppler effect with light?
Definately, in fact this is one thing that the Theory of Relativity predicts. If you are moving toward an object then light being emitted from that object will be shifted toward shorter wavelengths or blue-shifted. Stuff moving away from you will show up as shifted toward longer wavelengths, or red-shifted. The idea is that the speed of light never changes but the energy of the light can change relative to a moving object. The color of light is directly related to its energy.
This is one way that we know the universe is expanding, light from far-off objects show up as being red-shifted from what is expected. In fact the further away the object is the more red-shifted it is, showing that space itself is expanding. To understand this dot a balloon with magic marker and then begin to inflate it. You can see that not only does the distance between the dots increase, the further the dots are from each other the more the distance increases.
This is how radar works by the way. They send out a known frequency of radio signal. When it bounces off a moving object the frequency gets shifted according to how fast the object is going. They then compare the outgoing signal to the incoming signal, the difference is how fast the object is going.
Good luck tranfering your music to the next generation toy unless you buy the new toy when it's very expensive and you keep up with new Mac or Windoze OS's.
You're right because it's so damn tough to burn those songs out to a CD and rip them back as MP3, WMA, or whatever. It's also so damn tough to get one of the dozens of programs that capture the raw audio coming out of iTunes and encode it into another format.
Oh wait, that was sarcasm for those who are sarcasm-impared. It is the easiest thing in the world to convert an Apple encrypted AAC file to whatever format you want. The fact is that Apple's encrypted AAC files just barely have any DRM attached to them. It's just enough to appease the record industry and allow Apple to sell music, while really not stopping you from doing whatever the hell you want with it.
Face it, short of going out and buying physical CDs for a premium price (which is even worse if you only want 1 song off the album) you are not going to be able to get much music legally without some sort of DRM. Apple's iTunes Music Store has the least invasive DRM of all the stores out there and it's very unlikely that anyone will top it.
I just cloned a drive from my old machine to my new. I was very simple with Mac OS X. I booted the new machine up in target disk mode by holding down the "t" key and I plugged a firewire cable into the two machines. I then used the Apple Software Restore command-line tool:
sudo asr -source / -target/Volumes/NewComputerHD -erase
Boom, off it went. Completely cloned the old machine over to the new with no problems. When I restarted the new machine it worked exactly as the old one had, just with new hardware.
The process would have gone faster if I had made a disk image of the volume to be cloned and had ASR do a preflight scan of the image, but since I was only doing this once it wasn't worth it. I did it for an entire lab of 20 iMacs once and it saved a lot of time, especially since ASR can run over a network - can you say no swapping CDs?:-)
I would love to just encrypt my documents dir and leave my music available.
That's easy enough to do, just make an encrypted disk image using Disk Utility (Disk Copy in pre-10.3). Copy everything you want encrypted to it. Then just open it when you need your stuff, it takes only a second to open. You can even make it a login item and save the password in your keychain so it automatically opens on login.
The only difference is you'll have a documents volume instead of a documents folder, no big whoop there since it all pretty much works about the same. If you want to make it look like it is in the same old spot then make a soft link from the Documents folder to the Documents volume.
In iTunes on my dual-G5 I can stop the M.C. Hammer track, "U Can't Touch This" in less than a 10th of second.
Still not quick enough dammit! This is why we have to keep Moore's Law alive and kicking, we can't stop until computers can predict the future and stop that damn song BEFORE it is played!
This seems to me like Microsofts strategy. It's another year, get another 'major release' out of the door so we can get everyone to chip in another hundred dollars.
Everyone seems to think that these ".1" releases of Mac OS X are not really major releases. In fact, they are pretty much whole version releases, it's just that Apple doesn't want to have to call their new baby Mac OS XI, Mac OS XII, Mac OS XIII, etc.
The amount of new features, better ways of doing things, corrections to problems, additions to the user interface make each one of the.1 releases to Mac OS X worth being treated as a full version. Take a look at how many reviewers and users are saying that this upgrade is well worth the $130, that alone should tell you that it really is a full version and not some minor update.
Expose is certainly frickin' cool. I don't know if the upgrade's worth $129, but since I got my copy for $20, it's a steal.
Heh, you want to talk about a steal. I was going to purchase a new computer soon so I signed up to be an Apple Student Developer. It cost $100 per year (they have a free version also) but it comes with all sorts of cool monthly mailings and perks. The best part about it is that you get a one-time, up to 20% discount on a hardware purchase. I bought a brand-new dual 2 gHz G5 and saved $600. The gravy on all of this was they sent out a copy of Panther with the Student Developer kit, another savings of $130. I also got a shirt and a bunch of other cool extras.
So for $100 I saved $730 in hardware and software, not to mention the developer mailings and all the extras. Not bad at all! Apple definitely treats its developers well.
Panther removed support for burning DRM enabled AAC files to CD as audio discs.
This is completely untrue. I just burned a full audio CD of AAC files purchased from the iTunes Music Store. No problems, no hangups, works exactly as it has always done.
Slashdot Mirror
Hydrogen bonding and the dipole moment of a molecule are two separate phenomena.
Hydrogen bonding has to do with the electron affinity of the atom a hydrogen atom is bonded to. When hydrogen is bonded to a small, electronegative atom, especially fluorine, oxygen, or nitrogen, the electronegative atom withdraws the electrons from the hydrogen atom. This causes the hydrogen to have a slightly positive charge while the other atom has a slightly negative charge. Since these atoms are small this results in a quite high charge density. Since positive and negative charges attract, if the positive on one molecule comes near a negative on another molecule they will attract strongly and will form something similar to a bond, but without electron sharing. Mix a lot of these molecules together and the substance that results will have a higher boiling point, increased surface tension, etc because the molecules are holding on to each other more tightly.
Dipole moment works along similar lines but has to do with the overall shape of a molecule. If you have a molecule where the charge is distributed asymmetrically (more negative on one side than the other) then the molecule will have a dipole moment. In water this does happen because of the V-shape - the oxygen at the apex of the V-shape draws the electrons away from the hydrogens at the tips of the V-shape causing the molecule to have a negative side and a positive side. However a molecule such as carbon dioxide is linear, it looks like O=C=O. The oxygens at each end are slightly negative and the carbon is slightly positive but the molecule has virtually no dipole moment because the charges are symmetrical.
So you can have molecules that have hydrogen bonding but little dipole moment (NH3 - ammonia), molecules that have a dipole moment but no hydrogen bonding (CH3Cl - chloromethane), molecules that have both (H2O - water), and molecules that have neither (CH3 - methane).
I agree that we can not dismiss the discoveries of people before the true defining of the scientific method. Certainly much was discovered before the methodology was firmly defined. Unfortunately there was also much that was made obscure by improper testing and verification of theories. We are seeing a resurgence of this with many of the herbal remedies being offered to the public. Sure, plant extracts have been known to have effects on our health but until we know precisely the cause and effects (and side-effects) of these extracts we will be more harmed than helped by them. This includes a complete understanding of the factors of how these extracts react with each other, a factor largely ignored by the holistic health community.
Remember that prior to the scientific method it was as common to describe a health problem as being driven by imps and pixies as it was by humors as it was by the state of your sanitation systems. It was not until these theories were examined scientifically that the most effective explanation was weeded out and used to improve our lot in life. Prior to the scientific method progress was extremely slow and followed many false paths, often staying stuck in a erroneous assumption for several generations. Yes "occult sciences" were occasionally correct, but can not be considered to be anything like true science.
Obviously you understand the difference between the two but increasingly it seems that more people do not understand the differences. It seems that they simply assume that scientists are discovering information about the universe using the same methods as the local palm reader down the street.
There actually is a fairly big difference between the "occult sciences" of the past and the modern study of science. The difference is the Scientific Method. The modern study of the sciences have very little to do with "observation with little experimentation". In order for a study to be scientific it needs to be repeatable for several different observers. Most of the "occult sciences" that you refer to have little to no repeatability except on the grossest of scales.
Theories that are not supported by observation and experimentation are simply conjecture and not true science. Even Einstein's famous theories of relativity were looked upon skeptically until the predictions made by those theories were observed under the direction of several independent laboratories.
Most importantly, however, is that there is no good scientist who would purport to have the ultimate unshakable theory. Every decent scientist will fully admit that his theories only support the evidence seen so far and that later on the theories might be discovered to be wrong or need to be revised. Science is not occult, science is logical, methodic, and based on the premise that a subject need only be studied to be understood. Furthermore, science has traditionally been a fairly open study that all can partake in, as opposed to the very definition of occult as inscrutable, mysterious, and hidden:
All joking aside, God I hope not. Using aspirin while drinking could very well kill you. Aspirin inactivates some key enzymes that neutralize alcohol in your body. Taking aspirin just before, during, or just after drinking could cause your blood alcohol levels to shoot up much faster than normal, causing severe damage.
Tylenol is also bad for a drinker because it has a severe liver toxicity when combined with alcohol. In fact Tylenol and ethanol on their own can be bad for your liver, combine them and they become worse for your liver than you would expect.
The best cure for a hangover is a little more alcohol and lots of Gatorade. The alcohol takes the edge of the mini-withdrawal you undergo and the Gatorade keeps you hydrated and replaces vital lost electrolytes and sugars. I've found that lemon-lime Gatorade and gin is actually a decent combination.
Man, do yourself a favor and don't use the root account if you can at all help it. Use sudo instead, it's much safer.
Yep, only critical updates are automatically downloaded and even that is optional. In fact the whole process is optional. You can tell the operating system to never check for updates on its own and you can choose to ignore updates.
Software Update is pretty flexible and non-obtrusive. The only thing that I wish is that it had an option to allow me to register and de-register other programs for it to check. That way if the author of a program allowed it I could have Software Update automatically check for updates from him in addition to those from Apple.
Both of the Dock minimization effects are handled by the GPU. The window is drawn as normal by the application that owns it and is passed off to Quartz Extreme, which then hands it off to the GPU with the appropriate rendering commands. With the scale effect that is a simple scale command, with the genie effect there is stretching and scaling. All of this is done through Open GL commands.
That's why I love OmniWeb. It allows you to accept cookies, but throw them out when you quit the browser. Sure I lose such nifty "features" as not having to log into some websites but I also cut ads and whatnot of the ability to track me across sites for long periods.
Honestly, there need to be much better built-in controls on all browsers for limiting a server's access to data on your computer.
While that may be some people's view of the study of physics, that is not what study of physics is based on. The study of physics is based around the belief that through careful observation, theorization, and experimentation we should be able to discover anything we want to know about physics. In other words physicists believe that physics is not inscrutable but is instead able to be discovered and understood.
You know, I'd have far less problems with Apollo being a woman and Starbuck being a man than the other way around. Starbuck's big charm was his machismo, changing him to a woman is a much further-ranging change from the original series than changing Apollo would be.
As for Boomer, fine make him into a woman, I have no problems with women being equal as pilots or any other job.
No, those are the commies. Remember man, Purity of Essence - you have to keep those precious bodily fluids pure!
Set up an encrypted partition on the laptop and make sure you sync it up when you get home so if it is stolen you lose little data. When you work outside the home just work with your back to the wall, I'm sure you'll notice if someone is trying to sneak a peek. Set a hotkey to blank the screen or lock out the laptop quickly for when you need it.
It's really not as big of a risk as you might think. I work outside the office all the time and I can tell you that it comes fairly naturally once you find a few places that are comfortable.
Well this code certainly points you in the right direction.
Basically Apple has never really made its DRM to be a mighty fortress never destined to be gotten around. It's more like a speed bump designed to placate the RIAA into allowing Apple to sell the music.
Actually that's about what I'd expect for a program like Photoshop and large files. Photoshop is not a typical home or small office application, it has much higher system and memory demands. If you notice what I said was:
When using programs such as Safari and Microsoft Office you are not likely to see much improvement with large amounts of memory. On the other hand someone who is a programmer, digital artist, filmmaker, database programmer, etc. is more likely to be doing the types of activities that can benefit from large amounts of RAM. With those people a couple of gigs of RAM is a good thing indeed.
Mac OS X is cutting edge for the simple fact that it is the first OS to combine all of these proven technologies (and many more) into a package that just works and is slick to boot. Individually these technologies are nothing new but combined they represent the cutting edge of OS design.
One nitpick: the kernel is Mach (well, Mach-based), the BSD tools are layered on top of that (along with GNU, NextStep, and much more)
After about 512 megs of RAM you don't see much speedup for normal tasks. Large databases and such will improve with gigs of memory but for normal home and office use 256 is absolute minimum, 384 is the minimum preferred and 512 is plenty.
I currently have 1.5 gigs of RAM just because it was cheap and I occasionally do some larger tasks, but I almost never use it all. I've had this machine up for days and running all sorts of programs and compiling projects and right now I have 600 megs of RAM inactive and 560 megs free. Basically I'm only using 340 megs of RAM or so at this moment (4 or 5 user processes running)
Mining itself does not make sense as a first step. The first step is power generation. We need to place a few microwave transmitting solar power stations into orbit first. Then we could use some of that energy to drive lasers that would push materials into space at a low cost. Then we could use those technologies and materials to build bases to mine from.
The benefits of this sort of progression is that when the power satellites are not being used to push spacecraft they can be used to generate almost 100% clean energy with no chemical pollutants, particulates, radioactive waste, damming of rivers, or CO2 emissions. The power stations would pay for themselves quickly and would actually have the space program generating revenue rather than just being a cost.
Definately, in fact this is one thing that the Theory of Relativity predicts. If you are moving toward an object then light being emitted from that object will be shifted toward shorter wavelengths or blue-shifted. Stuff moving away from you will show up as shifted toward longer wavelengths, or red-shifted. The idea is that the speed of light never changes but the energy of the light can change relative to a moving object. The color of light is directly related to its energy.
This is one way that we know the universe is expanding, light from far-off objects show up as being red-shifted from what is expected. In fact the further away the object is the more red-shifted it is, showing that space itself is expanding. To understand this dot a balloon with magic marker and then begin to inflate it. You can see that not only does the distance between the dots increase, the further the dots are from each other the more the distance increases.
This is how radar works by the way. They send out a known frequency of radio signal. When it bounces off a moving object the frequency gets shifted according to how fast the object is going. They then compare the outgoing signal to the incoming signal, the difference is how fast the object is going.
You're right because it's so damn tough to burn those songs out to a CD and rip them back as MP3, WMA, or whatever. It's also so damn tough to get one of the dozens of programs that capture the raw audio coming out of iTunes and encode it into another format.
Oh wait, that was sarcasm for those who are sarcasm-impared. It is the easiest thing in the world to convert an Apple encrypted AAC file to whatever format you want. The fact is that Apple's encrypted AAC files just barely have any DRM attached to them. It's just enough to appease the record industry and allow Apple to sell music, while really not stopping you from doing whatever the hell you want with it.
Face it, short of going out and buying physical CDs for a premium price (which is even worse if you only want 1 song off the album) you are not going to be able to get much music legally without some sort of DRM. Apple's iTunes Music Store has the least invasive DRM of all the stores out there and it's very unlikely that anyone will top it.
I just cloned a drive from my old machine to my new. I was very simple with Mac OS X. I booted the new machine up in target disk mode by holding down the "t" key and I plugged a firewire cable into the two machines. I then used the Apple Software Restore command-line tool:
/Volumes/NewComputerHD -erase
:-)
sudo asr -source / -target
Boom, off it went. Completely cloned the old machine over to the new with no problems. When I restarted the new machine it worked exactly as the old one had, just with new hardware.
The process would have gone faster if I had made a disk image of the volume to be cloned and had ASR do a preflight scan of the image, but since I was only doing this once it wasn't worth it. I did it for an entire lab of 20 iMacs once and it saved a lot of time, especially since ASR can run over a network - can you say no swapping CDs?
That's easy enough to do, just make an encrypted disk image using Disk Utility (Disk Copy in pre-10.3). Copy everything you want encrypted to it. Then just open it when you need your stuff, it takes only a second to open. You can even make it a login item and save the password in your keychain so it automatically opens on login.
The only difference is you'll have a documents volume instead of a documents folder, no big whoop there since it all pretty much works about the same. If you want to make it look like it is in the same old spot then make a soft link from the Documents folder to the Documents volume.
Still not quick enough dammit! This is why we have to keep Moore's Law alive and kicking, we can't stop until computers can predict the future and stop that damn song BEFORE it is played!
Everyone seems to think that these ".1" releases of Mac OS X are not really major releases. In fact, they are pretty much whole version releases, it's just that Apple doesn't want to have to call their new baby Mac OS XI, Mac OS XII, Mac OS XIII, etc.
The amount of new features, better ways of doing things, corrections to problems, additions to the user interface make each one of the
Heh, you want to talk about a steal. I was going to purchase a new computer soon so I signed up to be an Apple Student Developer. It cost $100 per year (they have a free version also) but it comes with all sorts of cool monthly mailings and perks. The best part about it is that you get a one-time, up to 20% discount on a hardware purchase. I bought a brand-new dual 2 gHz G5 and saved $600. The gravy on all of this was they sent out a copy of Panther with the Student Developer kit, another savings of $130. I also got a shirt and a bunch of other cool extras.
So for $100 I saved $730 in hardware and software, not to mention the developer mailings and all the extras. Not bad at all! Apple definitely treats its developers well.
This is completely untrue. I just burned a full audio CD of AAC files purchased from the iTunes Music Store. No problems, no hangups, works exactly as it has always done.