That is an interesting observation. For example when my heat pump failed, I just turned on the six 100 watt lights in my basement. Nearly 100% efficient 600 watt resistive heater. It was good for the nights that were a little chilly, but not enough to run the 1500 watt resistive space heater. Having 6 AMD computers helped too. I figured that there is a constant 1000 watts of heat at least between the computers and lights.
Not a good long term strategy since a heat pump is many times more efficient than resistive heat even at 100% efficiency, but it worked in the short run.
This would make for an incredibly cheap and effective night vision system with a small battery and a CCD camera. IR floodlight with 60% efficiency... mmmmmm.
Well, I know you were joking, but assuming the box is sealed to light, a 60 watt bulb will still put off 60 watts of heat, no matter if it has 100% efficiency or 0%, since the light energy will eventually be absorbed by the sides of the box and turned into heat anyway.
Red Hat's March cuts in their embedded division and their losses of $80M to $140M a year.
Do I need to explain the concept of "Goodwill" yet again? Why do people keep this shit up? Are they holding short positions in RHAT?
Goodwill is the amount of money a company pays for another company, that is above the value of the tangible assets of the aquired company. This may include brand names, patents, and other intangibles. If a company buys a company that turns out to be overpriced later on, then the buying company will have lots and lots of goodwill that must eventually be charged against earnings.
Red Hat did not lose those large amounts of "real assets", rather, almost all of that "loss" was a write down of goodwill from previous aqusitions.
Look at it this way.
1) RHAT IPOs 2) RHAT stock becomes grossly overvalued 3) RHAT makes a secondary offering, cashing in on their grossly overvalued stock in a big way. 4) RHAT goes on a buying spree, spending their money that they got for free, buying companies like Cygnus. 5) Cygnus was also pretty overvalued, so a lot of goodwill ends up in the "assets" column of RHATs balance sheet. 6) RHAT has to write off chunks of this goodwill against earnings later on.
The key is that RHAT got this money for free. Had they not made the secondary offering, they wouldn't have had the money to make the aqusitions in the first place. Sure, that money ultimately came from idiot investors that paid $200 a share for RHAT, but it didn't come from any direct business or financing activities that had an opportunity cost for RHAT (such as debt financing).
So no, they aren't losing those staggering numbers each quarter, in fact they are breaking even for the last 3 quarters or so.
Goowill can be abused. "One-time-charges" can be abused (see Cisco writing off billions of real, tangible, inventory).... but in this case... there is no money lost, just worthless monopoly money that no longer exists, and hasn't existed for years, subtracted from a column on a balance sheet.
They would only need to release direct kernel modification under the GPL. They can make closed source kernel modules, and closed source userspace programs, under whatever license they want.
Yeah, but that would be WAY over the "lowest necessary power" that the FCC says you have to use.
I guess it depends on what you are trying to do with it. If you were trying to do EME or something that's a long shot, 1500 is justified. Of course, if you have enough money to blow on a 1500 watt microwave transmitter, you can probably buy some congresspeople anyway. High power microwave is expensive stuff.
Microwaves use a frequency at which water resonates. It therefore works by exciting, mainly, water molecules. This is why most plates don't warm up except where (moisture containing) food comes into contact.
Sorry, that's still wrong. The plate doesn't heat up because it is not conductive, and invisible to RF.
There is nothing magical about the particular frequency microwaves operate on. It doesn't "resonate with water molecules" in any special way that other frequencies do not.
Did this story remind anyone of the 60s TV series "Emergency!"?
Fireman John Gage wanted to invent a "Foam Grenade" to throw into fires for the firemans invention contest at one point. He also wanted to invent suction cup boots to walk up walls though, but I'm sure the series writers are grinning at this news.
Also, right now the INS, IRS and other gov't organizations don't talk to each other much. A national id card would change that, it might remove some beaurocracy.
"I own I am not a friend to a very energetic government. It is always oppressive." -- Thomas Jefferson to James Madison, 12/20/1787
It would be way too hard to try to cancel RF in a complex multipath environment that the train represents. Not to mention that the phones aren't all on the exact same frequency.
i.e. A 1 watt transmission at 1 Ghz will have as much of a heating effect as 1 watt at 2Ghz (assuming equal tissue absortion characteristics). AFAIK, around the microwave range, higher frequencies have less of a heating effect on human tissue. So which is it?
It depends on the Specific Absorption Ratio (SAR).
What Does "SAR" Mean? In 1996, the FCC, working with the FDA, the U.S. Environmental Protection Agency, and other agencies, established RF exposure safety guidelines for wireless phones in the United States. Before a wireless phone model is available for sale to the public, it must be tested by the manufacturer and certified to the FCC that it does not exceed limits established by the FCC. One of these limits is expressed as a Specific Absorption Rate, or "SAR." SAR is a measure of the rate of absorption of RF energy in the body ----------
SAR varies with frequency, some frequencies are better absorbed because of the size, shape, and composition of your body.
An example, your eyes are resonant in the microwave range. If you looked into the feedhorn of a transmitting microwave dish, you could cook your corneas, but the same wattage at a lower frequency would only make you feel warm, tingly, or uncomfortable, or you may feel nothing at all, if you had a close encounter with it.
I used to transmit 100 watts from an indoor wall mounted dipole in my apartment. This cell phone stuff is just paranoia and scare tactics, it seems.
is at 2.45Ghz which is the working frequency of your microwave oven. Above or below that frequency it is far less effective.
That's really a misconception. Microwaves would be just as effective at any microwave frequency, within reason. There are a lot of documents floating around, talking about how microwaves somehow resonate with the water molecules, but that is BS. Any higher frequency will resonate pretty well with any smallish, conductive, object, there is nothing magical about 2.4Ghz.
You are very correct though in your other parts, frequency has nothing to do with power, and it does affect absorption and penetration characteristics.
There's this thing called the inverse square law. I am a ham radio operator, and I can legally operate 1500 watts on most ham bands (including 2.4Ghz), right from my roof., and my neighbors can't say shit.
1/d^2 where d is the distance. Say you measure power at one foot. The power at two feet will be 1/4 of the power at one foot. At 4 feet from the radiator, it will be 1/16th of the power. At 50 feet, it will be 1/2500th of the power at one foot, at 100 feet, 1/10,000th.
That's correct, and there is more. A cordless phone transmits at around 40Mhz, 900Mhz or 2.4 Ghz. A cell phone transmits around the high 800Mhz or 2.4Ghz range, depending on if it is analog or digital, respectively.
At 40Mhz, your body does not resonate with the frequency hardly at all. Your whole body resonates in the VHF range, I think around 400Mhz or so. At 900Mhz, your head makes a good resonator, and at 2.4Ghz, your eyes can resonate.
Now, if you are closer to being resonant with a certain frequency, you will absorb more of the power. It's the same as cutting a dipole antenna to a resonant length. Absorption of low levels of RF energy has not been shown in credible studies to be hazardous. It's believed that the only negative effects of RF are caused by heating, which doesn't occur at these levels in any significant amount.
Cell phones are not putting off much more RF than your monitor, your alarm clock, or halogen lights.
I have some recent first hand experience with this one. I built a 980GB RAID out of eight 160GB ATA drives on a 3ware card, and I was all ready to ship it, and but I forgot that we needed to copy 500GB of our data onto it first. That was early yesterday. It is still copying files as I type this. It's pretty bad when it takes several days to copy files onto an array at full bore network speeds, just to fill it halfway up. Never before has network speed/storage space been at such a high ratio before.
It's like MS. They make you pay protection money per computer, even if that computer doesn't have any MS software on it. If you don't pay said protection money, they you have to face their audit. I'm thinking the RIAA has a similar thing going.
Do you really want to trace down the legal history of every song you ever play? What if one of those independant artists once signed a contract that they no longer think applies since the label dropped them like a hot potato? Do you really have the reseouces to do that sort of background check on everything you play, or are you just taking the word of the artist?
I'm not in this industry, so I may be wrong, but I think it's something like that.
Slashdot Mirror
'stop unless it's dangerous to do so'
Similar here in VA, and I'd bet nationwide. Our actual verbiage is something more like "make every reasonable attempt to stop."
That is an interesting observation. For example when my heat pump failed, I just turned on the six 100 watt lights in my basement. Nearly 100% efficient 600 watt resistive heater. It was good for the nights that were a little chilly, but not enough to run the 1500 watt resistive space heater. Having 6 AMD computers helped too. I figured that there is a constant 1000 watts of heat at least between the computers and lights.
Not a good long term strategy since a heat pump is many times more efficient than resistive heat even at 100% efficiency, but it worked in the short run.
This would make for an incredibly cheap and effective night vision system with a small battery and a CCD camera. IR floodlight with 60% efficiency... mmmmmm.
Well, I know you were joking, but assuming the box is sealed to light, a 60 watt bulb will still put off 60 watts of heat, no matter if it has 100% efficiency or 0%, since the light energy will eventually be absorbed by the sides of the box and turned into heat anyway.
Red Hat's March cuts in their embedded division and their losses of $80M to $140M a year.
Do I need to explain the concept of "Goodwill" yet again? Why do people keep this shit up? Are they holding short positions in RHAT?
Goodwill is the amount of money a company pays for another company, that is above the value of the tangible assets of the aquired company. This may include brand names, patents, and other intangibles. If a company buys a company that turns out to be overpriced later on, then the buying company will have lots and lots of goodwill that must eventually be charged against earnings.
Red Hat did not lose those large amounts of "real assets", rather, almost all of that "loss" was a write down of goodwill from previous aqusitions.
Look at it this way.
1) RHAT IPOs
2) RHAT stock becomes grossly overvalued
3) RHAT makes a secondary offering, cashing in on their grossly overvalued stock in a big way.
4) RHAT goes on a buying spree, spending their money that they got for free, buying companies like Cygnus.
5) Cygnus was also pretty overvalued, so a lot of goodwill ends up in the "assets" column of RHATs balance sheet.
6) RHAT has to write off chunks of this goodwill against earnings later on.
The key is that RHAT got this money for free. Had they not made the secondary offering, they wouldn't have had the money to make the aqusitions in the first place. Sure, that money ultimately came from idiot investors that paid $200 a share for RHAT, but it didn't come from any direct business or financing activities that had an opportunity cost for RHAT (such as debt financing).
So no, they aren't losing those staggering numbers each quarter, in fact they are breaking even for the last 3 quarters or so.
Goowill can be abused. "One-time-charges" can be abused (see Cisco writing off billions of real, tangible, inventory).... but in this case... there is no money lost, just worthless monopoly money that no longer exists, and hasn't existed for years, subtracted from a column on a balance sheet.
It like one long beta period, and instead of getting things finished people implements new features instead.
Sounds like a certain operating system I read something about.
Yeah, whatever. Keep trolling.
They would only need to release direct kernel modification under the GPL. They can make closed source kernel modules, and closed source userspace programs, under whatever license they want.
Yeah, but that would be WAY over the "lowest necessary power" that the FCC says you have to use.
I guess it depends on what you are trying to do with it. If you were trying to do EME or something that's a long shot, 1500 is justified. Of course, if you have enough money to blow on a 1500 watt microwave transmitter, you can probably buy some congresspeople anyway. High power microwave is expensive stuff.
Microwaves use a frequency at which water resonates. It therefore works by exciting, mainly, water molecules. This is why most plates don't warm up except where (moisture containing) food comes into contact.
Sorry, that's still wrong. The plate doesn't heat up because it is not conductive, and invisible to RF.
There is nothing magical about the particular frequency microwaves operate on. It doesn't "resonate with water molecules" in any special way that other frequencies do not.
Did this story remind anyone of the 60s TV series "Emergency!"?
Fireman John Gage wanted to invent a "Foam Grenade" to throw into fires for the firemans invention contest at one point. He also wanted to invent suction cup boots to walk up walls though, but I'm sure the series writers are grinning at this news.
Also, right now the INS, IRS and other gov't organizations don't talk to each other much. A national id card would change that, it might remove some beaurocracy.
"I own I am not a friend to a very energetic government. It is always oppressive." -- Thomas Jefferson to James Madison, 12/20/1787
Hieght, weight, eye color, damn near everything on the license is biometric data.
This is still scary. Mix power and technology, and you have a recipe for opression.
I guess you just made that up, right?
RF absorbant paint?
It would be way too hard to try to cancel RF in a complex multipath environment that the train represents. Not to mention that the phones aren't all on the exact same frequency.
i.e. A 1 watt transmission at 1 Ghz will have as much of a heating effect as 1 watt at 2Ghz (assuming equal tissue absortion characteristics).
j sp
AFAIK, around the microwave range, higher frequencies have less of a heating effect on human tissue.
So which is it?
It depends on the Specific Absorption Ratio (SAR).
http://www.verizonwireless.com/jsp/disclosures.
What Does "SAR" Mean?
In 1996, the FCC, working with the FDA, the U.S. Environmental Protection Agency, and other agencies, established RF exposure safety guidelines for wireless phones in the United States. Before a wireless phone model is available for sale to the public, it must be tested by the manufacturer and certified to the FCC that it does not exceed limits established by the FCC. One of these limits is expressed as a Specific Absorption Rate, or "SAR." SAR is a measure of the rate of absorption of RF energy in the body
----------
SAR varies with frequency, some frequencies are better absorbed because of the size, shape, and composition of your body.
An example, your eyes are resonant in the microwave range. If you looked into the feedhorn of a transmitting microwave dish, you could cook your corneas, but the same wattage at a lower frequency would only make you feel warm, tingly, or uncomfortable, or you may feel nothing at all, if you had a close encounter with it.
I used to transmit 100 watts from an indoor wall mounted dipole in my apartment. This cell phone stuff is just paranoia and scare tactics, it seems.
is at 2.45Ghz which is the working frequency of your microwave oven. Above or below that frequency it is far less effective.
That's really a misconception. Microwaves would be just as effective at any microwave frequency, within reason. There are a lot of documents floating around, talking about how microwaves somehow resonate with the water molecules, but that is BS. Any higher frequency will resonate pretty well with any smallish, conductive, object, there is nothing magical about 2.4Ghz.
You are very correct though in your other parts, frequency has nothing to do with power, and it does affect absorption and penetration characteristics.
There's this thing called the inverse square law. I am a ham radio operator, and I can legally operate 1500 watts on most ham bands (including 2.4Ghz), right from my roof., and my neighbors can't say shit.
1/d^2 where d is the distance. Say you measure power at one foot. The power at two feet will be 1/4 of the power at one foot. At 4 feet from the radiator, it will be 1/16th of the power. At 50 feet, it will be 1/2500th of the power at one foot, at 100 feet, 1/10,000th.
That's correct, and there is more. A cordless phone transmits at around 40Mhz, 900Mhz or 2.4 Ghz. A cell phone transmits around the high 800Mhz or 2.4Ghz range, depending on if it is analog or digital, respectively.
At 40Mhz, your body does not resonate with the frequency hardly at all. Your whole body resonates in the VHF range, I think around 400Mhz or so. At 900Mhz, your head makes a good resonator, and at 2.4Ghz, your eyes can resonate.
Now, if you are closer to being resonant with a certain frequency, you will absorb more of the power. It's the same as cutting a dipole antenna to a resonant length. Absorption of low levels of RF energy has not been shown in credible studies to be hazardous. It's believed that the only negative effects of RF are caused by heating, which doesn't occur at these levels in any significant amount.
Cell phones are not putting off much more RF than your monitor, your alarm clock, or halogen lights.
I have some recent first hand experience with this one. I built a 980GB RAID out of eight 160GB ATA drives on a 3ware card, and I was all ready to ship it, and but I forgot that we needed to copy 500GB of our data onto it first. That was early yesterday. It is still copying files as I type this. It's pretty bad when it takes several days to copy files onto an array at full bore network speeds, just to fill it halfway up. Never before has network speed/storage space been at such a high ratio before.
Oh, OK... hehe, I'm not too up on my Disney, I never did like Disney stuff too much. It always seemed lame to me.
I think you meant "Rescue Rangers", a Disney cartoon from the 80s.
Animal cruelty only applies to cute animals, haven't you been paying attention?
and I'm not aware of any speciation that has resulted as a result of those experiments.
Try here
Hypothesis: Selective breeding will cause a species to evolve
Support the Hypothesis: Selective breeding caused the species to evolve
Refute the hypothesis: Selective breeding did not cause the species to evolve.
It's like MS. They make you pay protection money per computer, even if that computer doesn't have any MS software on it. If you don't pay said protection money, they you have to face their audit. I'm thinking the RIAA has a similar thing going.
Do you really want to trace down the legal history of every song you ever play? What if one of those independant artists once signed a contract that they no longer think applies since the label dropped them like a hot potato? Do you really have the reseouces to do that sort of background check on everything you play, or are you just taking the word of the artist?
I'm not in this industry, so I may be wrong, but I think it's something like that.