How is this fixed? A modern CMOS chip "consumes" energy during the clock transition - when each FET's gate capacitance needs to be charged or discharged. Once this occurs there is virtually zero current drawn by the chip.
So power draw is almost entirely proportional to clock frequency.
To be fair though, I guess a certain operation requires a certain number of clock cycles, regardless of the speed at which they occur. So perhaps a slower rate lowers the *power* draw, but not total energy consumption (all else being equal)
Best of both worlds (since all else never is equal) would be underclocking, thereby allowing a greater amount of undervolting (since gate charge would be proportional to supply voltage, that has a inversely proportional affect on energy consumption)
If YOU read the article instead of merely skimming it, you'd notice the Redhat content was added merely to flesh out the article - due to Redhat's existing relationship with the state government.
Umm, isn't fuel mileage completely dependent on the RPMs your car is turning?
In a no-load condition yes, but under load - no. At idle RPMs under load you can't afford to dial in much advance (ignition or valve opening) - basically you can't slow down the flame-front enough. Whereas you can add advance at 2000rpm - so an engine is more efficient (at load) at higher RPMs.
If you release the brake in an auto, you creep forward. Clearly a torque is being applied to the wheels, even at "idle". Holding the brake means that energy just gets consumed in the torque convertor as heat.
It is definitely best to pop an auto into neutral when stopped at the lights.
Assuming a 200kg battery with a specific heat capacity of about 1.0J per gK gives:
200000/3150/1.0 is about 63.5s/K.
Even a perfectly insulated battery would rise by only ~5K (5C/9F) in 5 minutes.
Even a 10% inefficiency and a specific heat capacity of 0.5J/g/K would be ~100C rise - hot, but hardly smoking.
Remind us all how many manufacturers are making these batteries again - oh yeah just Toshiba. I'm sure it's quite easy to accommodate the few shapes and sizes they'll make.
"B" batteries in the context of vacuum tube circuits refer to their function, not their form, so they are not contemporaries of AAA-, C- and D-sized cells
Several other options - some are already mentioned long before I post this -
Nichrome wire as mentioned above - or any other fuse wire, or low-voltage lightbulbs with the glass carefully broken off. Unfortunately they might be slightly laggy. But what are you lighting? fuse-based pyrotechnics? That's slow anyway.
If you want a spark, then use transistors (or push buttons even), a car ignition coil and sparkplugs. Sparkplugs are relatively cheap, and built damn tough so they'll be reusable. Sparks are fast to generate, but unfortunately sparks can really only ignite a flammable vapor - not a fuse.
Can possibly use DMX for control if you have the equipment available, but professionals popularly use MIDI to control the firing.
So you do drills. You practice moving without panic when an alarm goes off. Maybe you were terrified when your building started shaking, but when was the last time that ringing bells paralysed you with fear?
Don't point all three mirrors directly backwards then. Point your wing mirrors wider - you have a much better overall view of what is happening behind you. (Really - Don't knock it until you've tried it. I used to be a "door-handler" but would never go back. And besides, I don't have an athritic neck so I can [and always do] turn my neck if I'm still unsure.)
*None* of the problems you have mentioned would be passed to a next generation through genetics.
Besides, the elite few don't use drugs or extreme training to become elite - they use it to become the elitest. Therefore they are already at the superior end of the gene spectrum.
before, the batteries would be half-way to useless by the time someone bought the toy and started using it
I think it possibly speaks more about the diminishing shelf-life of todays toys. The toys go out of fashion looooong before the batteries die!
Actually, I think you'd find it takes less electricity to constantly keep topping up the water cylinder's temperature rather than letting it cool and heating it up from cold again
Wrong - it's more efficient to heat the water just before you use it, rather than heat it a long time before you use it and try to maintain the heat. The rate of thermal energy loss from a hot body of water is higher than the rate of loss from a cold body of water, while the amount of energy required to heat the cold water that replaces the consumed hot water is constant.
The mouse comments in the summary threw you off. The issue is with touchscreens, and using a stylus would involve reaching across the screen therefore your hand/wrist would obscure whatever you were scrolling.
Nor are 0-9 actually numeric in the context of a phone number, because a phone number has no intrinsic numerical value. They are merely ten unique symbols.
The academic community *supposed* to be about GPL/OSS etc. It is supposed to be about preparing and educating students for the Real World (tm) - which happens to be a very proprietary place.
You'll find that many universities impose restrictions which basically state that anything you develop while a student belongs to the university. Doesn't sound very aligned with open source at all to me.
Slashdot Mirror
How is this fixed? A modern CMOS chip "consumes" energy during the clock transition - when each FET's gate capacitance needs to be charged or discharged. Once this occurs there is virtually zero current drawn by the chip.
So power draw is almost entirely proportional to clock frequency.
To be fair though, I guess a certain operation requires a certain number of clock cycles, regardless of the speed at which they occur. So perhaps a slower rate lowers the *power* draw, but not total energy consumption (all else being equal)
Best of both worlds (since all else never is equal) would be underclocking, thereby allowing a greater amount of undervolting (since gate charge would be proportional to supply voltage, that has a inversely proportional affect on energy consumption)
If YOU read the article instead of merely skimming it, you'd notice the Redhat content was added merely to flesh out the article - due to Redhat's existing relationship with the state government.
Umm, isn't fuel mileage completely dependent on the RPMs your car is turning?
In a no-load condition yes, but under load - no. At idle RPMs under load you can't afford to dial in much advance (ignition or valve opening) - basically you can't slow down the flame-front enough. Whereas you can add advance at 2000rpm - so an engine is more efficient (at load) at higher RPMs.
If you release the brake in an auto, you creep forward. Clearly a torque is being applied to the wheels, even at "idle". Holding the brake means that energy just gets consumed in the torque convertor as heat.
It is definitely best to pop an auto into neutral when stopped at the lights.
well, clearly it mislead kdawson somewhat!
Use a bladder inside the tank. Duh.
Sadly escape velocity is about Mach 25.
Assuming a 200kg battery with a specific heat capacity of about 1.0J per gK gives: 200000/3150/1.0 is about 63.5s/K. Even a perfectly insulated battery would rise by only ~5K (5C/9F) in 5 minutes. Even a 10% inefficiency and a specific heat capacity of 0.5J/g/K would be ~100C rise - hot, but hardly smoking.
Remind us all how many manufacturers are making these batteries again - oh yeah just Toshiba. I'm sure it's quite easy to accommodate the few shapes and sizes they'll make.
"B" batteries in the context of vacuum tube circuits refer to their function, not their form, so they are not contemporaries of AAA-, C- and D-sized cells
(C/p)^(1/2) actually, not (C/p)^(-2)
sure, great idea - just poor implementation!
just fly 100ft higher. duh!
Several other options - some are already mentioned long before I post this - Nichrome wire as mentioned above - or any other fuse wire, or low-voltage lightbulbs with the glass carefully broken off. Unfortunately they might be slightly laggy. But what are you lighting? fuse-based pyrotechnics? That's slow anyway.
If you want a spark, then use transistors (or push buttons even), a car ignition coil and sparkplugs. Sparkplugs are relatively cheap, and built damn tough so they'll be reusable. Sparks are fast to generate, but unfortunately sparks can really only ignite a flammable vapor - not a fuse.
Can possibly use DMX for control if you have the equipment available, but professionals popularly use MIDI to control the firing.
So you do drills. You practice moving without panic when an alarm goes off. Maybe you were terrified when your building started shaking, but when was the last time that ringing bells paralysed you with fear?
Don't point all three mirrors directly backwards then. Point your wing mirrors wider - you have a much better overall view of what is happening behind you. (Really - Don't knock it until you've tried it. I used to be a "door-handler" but would never go back. And besides, I don't have an athritic neck so I can [and always do] turn my neck if I'm still unsure.)
I say sing any number of immature variations and claim fair-use as "parody".
*None* of the problems you have mentioned would be passed to a next generation through genetics. Besides, the elite few don't use drugs or extreme training to become elite - they use it to become the elitest. Therefore they are already at the superior end of the gene spectrum.
before, the batteries would be half-way to useless by the time someone bought the toy and started using it
I think it possibly speaks more about the diminishing shelf-life of todays toys. The toys go out of fashion looooong before the batteries die!
Actually, I think you'd find it takes less electricity to constantly keep topping up the water cylinder's temperature rather than letting it cool and heating it up from cold again
Wrong - it's more efficient to heat the water just before you use it, rather than heat it a long time before you use it and try to maintain the heat. The rate of thermal energy loss from a hot body of water is higher than the rate of loss from a cold body of water, while the amount of energy required to heat the cold water that replaces the consumed hot water is constant.
"bit" is short for BINARY digit. So a "bit" that can only be off would presumably be a unary digit - or a "uit".
The mouse comments in the summary threw you off. The issue is with touchscreens, and using a stylus would involve reaching across the screen therefore your hand/wrist would obscure whatever you were scrolling.
Actually, start bit + 8 data bits + stop bit = 10 bits, so 1/10th is entirely correct.
Nor are 0-9 actually numeric in the context of a phone number, because a phone number has no intrinsic numerical value. They are merely ten unique symbols.
The academic community *supposed* to be about GPL/OSS etc. It is supposed to be about preparing and educating students for the Real World (tm) - which happens to be a very proprietary place.
You'll find that many universities impose restrictions which basically state that anything you develop while a student belongs to the university. Doesn't sound very aligned with open source at all to me.