But that's the thing...these variable frequency drives you are talking about all rectify the AC mains onto a DC bus, which they then chop back into AC at varying frequencies, most of the time not the same frequency as the mains.
That in itself is a great argument for DC distribution...AC mains are pointless.
The part that we *see* is dark for half the month, but the moon as a whole is always half lit except for during a lunar eclipse. You could run a big power cable halfway around the moon and always have power;)
Actually, although tires are somewhat conductive, they have a high resistance, which does not bode well to use them as a ground drain. It drains high voltage static charges but that's about it...
The reason carbon black is used in tires is primarily for strength and durability. It can increase the tensile strength and abrasion resistance of rubber by a factor of more than ten.
Look up the history of tire technology and you will find no reference to the primary use of carbon black as a method of grounding the vehicle. BF Goodrich started adding carbon black to their tires in 1910 to increase the durability.
I'm going to go out on a limb here and say it is no coincidence that both you and the parent poster both think you are getting 1/8th the advertised speed...most people get MB/s and Mb/s confused...
I find this to be an interesting discussion, because although everyone blames the GM diesels' problems on being a modified gasoline engine, some of the most well-known and reliable "classic" Diesel engines in cars were nearly identical to their gasoline counterparts: VW 1.5, 1.6, and 1.9 Diesels and BMW 2.4L Diesels. The 1980's VW 1.5-1.9 engine blocks were nearly identical to 1.8-2.0L gasoline engines, with bore spacing, etc being identical. The same goes for the BMW 324TD and 325e/i...the cranks are swappable etc.
The problem (as your post supports) is poor design choices, not the base from which they were derived.
You are partially correct, but the equivalent speed is not 80 mph or 40 mph, it is 56.7 mph
The total kinetic energy absorbed in a collision is equal to the sums of the kinetic energies of the objects involved
Assuming a 1500 kg car travelling 18 m/s (40 mph): E_k = 1500kg * (18 m/s)^2 = 486 kJ
Two 1500kg vehicles travelling 40 mph: total energy = 486 + 486 = 972 kJ Assuming one vehicle hitting a stationary vehicle with same total energy, solve for velocity v = SQRT(972kJ/1500kg) = 25.515 m/s (56.7 mph) Each vehicle absorbs 486 kJ of energy
If you replace one vehicle with a "brick wall", yes everything changes again because the "brick wall" absorbs very little energy In this case, the vehicle can be assumed to absorb all of the energy of the collision, and the equivalent speed is 40 mph
So these are all equivalent: 1 vehicle @ 40 + 1 vehicle @ 40 1 vehicle @ 56.7 + 1 vehicle @ 0 1 vehicle @ 40 + brick wall
You made the false assumption that if a car doing 40 mph hit a stationary car, the stationary car wouldn't move. This is only the case if the stationary car it itself butted up against a brick wall.
The audible snapping and popping likely has nothing to do with RF radiation from the lines. High tension power lines actually get a DC charge on them from capacitance between the conductor and ground, and the snapping and popping is from ionic discharge (artificial lightning).
Although it *is* an electrical field, it is a static field that does not radiate RF energy. It can not be harvested inductively and therefore it has nothing to do with what some people are paranoid about.
Actually I live in Canada, and yes, same deal with computers.
I like the analogy further down in this discussion of a broken hard drive being more akin to a blown head gasket than a flat tire. Even in the case of a blown head gasket I wouldn't hesitate to fix it myself, but most people would ditch it if is out of warranty.
There was never any implication that MS has anything to do with the disk drive business; SpaceLifeForm said sales of Windows would be helped.
If the drive fails in 2 years instead of 5, the owner is likely going to go out and buy a new PC three years earlier than they need to, instead of getting the drive replaced; this generally means another sale of Windows.
Heat wheels, free cooling, ground loop heat pumps, these are all technologies that have been around for 50 years, and have been mainstream for just as long.
I work in the HVAC controls industry, and even the smallest private schools and the like use heat recovery wheels, free cooling, and many use ground loop heat pumps.
Goodness, every packaged rooftop unit manufacturer has done free cooling for decades. They are usually controlled by enthalpy sensors or return air CO2 levels. No fancy computers are required to control them, although our job is to add that functionality.
Of all industries, the IT cooling one seems to be in the dark ages.
And yes I know they haven't been using these technologies, I work around server rooms quite a bit and can't get over how much energy they waste by not economizing.
It's not rocket science and it should be blatantly obvious to the engineers that design the systems.
In my city, trash in a bin belongs to the disposal company that owns the bin, and trash on the curb belongs to the city. It is, in fact, considered stealing to pick through garbage on the curb, and also to pick through your employer's garbage bin, because the trash company is being denied money for trash that was supposed to go to them.
Not really all that logical, but that's the way it works.
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Not if they tried him in Virginia...he'd be dead long ago
Just a FYI, but very very few nuclear power plants have only a single reactor...single reactors aren't very efficient from a cost perspective.
But that's the thing...these variable frequency drives you are talking about all rectify the AC mains onto a DC bus, which they then chop back into AC at varying frequencies, most of the time not the same frequency as the mains.
That in itself is a great argument for DC distribution...AC mains are pointless.
I have read that these reactors never had steam powered pumps.
The technical definition of "Howitzer" in most of the world is any artillery piece with length 15 to 25 times its caliber.
The part that we *see* is dark for half the month, but the moon as a whole is always half lit except for during a lunar eclipse. You could run a big power cable halfway around the moon and always have power ;)
The space shuttle is cooled using radiative heat rejection. It works well.
You don't see how that instills a culture of corruption? Seriously?
How bout the fact that in a brutal regime the only way to get what you want is to pay people off...
But if the evidence is encrypted, how to they know it is evidence of a crime?
Actually, although tires are somewhat conductive, they have a high resistance, which does not bode well to use them as a ground drain. It drains high voltage static charges but that's about it...
The reason carbon black is used in tires is primarily for strength and durability. It can increase the tensile strength and abrasion resistance of rubber by a factor of more than ten.
Look up the history of tire technology and you will find no reference to the primary use of carbon black as a method of grounding the vehicle. BF Goodrich started adding carbon black to their tires in 1910 to increase the durability.
Depends where in the world you are. In Canada there is no such thing as Battery, only Assault and Aggravated Assault.
I'm going to go out on a limb here and say it is no coincidence that both you and the parent poster both think you are getting 1/8th the advertised speed...most people get MB/s and Mb/s confused...
You think it's any different going the other way? American border guards have been known to refuse entry on admission of simply having been arrested.
I find this to be an interesting discussion, because although everyone blames the GM diesels' problems on being a modified gasoline engine, some of the most well-known and reliable "classic" Diesel engines in cars were nearly identical to their gasoline counterparts: VW 1.5, 1.6, and 1.9 Diesels and BMW 2.4L Diesels. The 1980's VW 1.5-1.9 engine blocks were nearly identical to 1.8-2.0L gasoline engines, with bore spacing, etc being identical. The same goes for the BMW 324TD and 325e/i...the cranks are swappable etc.
The problem (as your post supports) is poor design choices, not the base from which they were derived.
RADAR uses electromagnetic waves, and they measure the Doppler effect. I don't see how laser would be any different.
AFAIK their DSL traffic is routed over Bell's infrastructure...just like virtually all third-party providers.
You are partially correct, but the equivalent speed is not 80 mph or 40 mph, it is 56.7 mph
The total kinetic energy absorbed in a collision is equal to the sums of the kinetic energies of the objects involved
Assuming a 1500 kg car travelling 18 m/s (40 mph):
E_k = 1500kg * (18 m/s)^2 = 486 kJ
Two 1500kg vehicles travelling 40 mph: total energy = 486 + 486 = 972 kJ
Assuming one vehicle hitting a stationary vehicle with same total energy, solve for velocity
v = SQRT(972kJ/1500kg) = 25.515 m/s (56.7 mph)
Each vehicle absorbs 486 kJ of energy
If you replace one vehicle with a "brick wall", yes everything changes again because the "brick wall" absorbs very little energy
In this case, the vehicle can be assumed to absorb all of the energy of the collision, and the equivalent speed is 40 mph
So these are all equivalent:
1 vehicle @ 40 + 1 vehicle @ 40
1 vehicle @ 56.7 + 1 vehicle @ 0
1 vehicle @ 40 + brick wall
You made the false assumption that if a car doing 40 mph hit a stationary car, the stationary car wouldn't move. This is only the case if the stationary car it itself butted up against a brick wall.
The audible snapping and popping likely has nothing to do with RF radiation from the lines. High tension power lines actually get a DC charge on them from capacitance between the conductor and ground, and the snapping and popping is from ionic discharge (artificial lightning).
Although it *is* an electrical field, it is a static field that does not radiate RF energy. It can not be harvested inductively and therefore it has nothing to do with what some people are paranoid about.
Actually I live in Canada, and yes, same deal with computers.
I like the analogy further down in this discussion of a broken hard drive being more akin to a blown head gasket than a flat tire. Even in the case of a blown head gasket I wouldn't hesitate to fix it myself, but most people would ditch it if is out of warranty.
There was never any implication that MS has anything to do with the disk drive business; SpaceLifeForm said sales of Windows would be helped.
If the drive fails in 2 years instead of 5, the owner is likely going to go out and buy a new PC three years earlier than they need to, instead of getting the drive replaced; this generally means another sale of Windows.
Are these people stupid?
Heat wheels, free cooling, ground loop heat pumps, these are all technologies that have been around for 50 years, and have been mainstream for just as long.
I work in the HVAC controls industry, and even the smallest private schools and the like use heat recovery wheels, free cooling, and many use ground loop heat pumps.
Goodness, every packaged rooftop unit manufacturer has done free cooling for decades. They are usually controlled by enthalpy sensors or return air CO2 levels. No fancy computers are required to control them, although our job is to add that functionality.
Of all industries, the IT cooling one seems to be in the dark ages.
And yes I know they haven't been using these technologies, I work around server rooms quite a bit and can't get over how much energy they waste by not economizing.
It's not rocket science and it should be blatantly obvious to the engineers that design the systems.
The government got into liquor when prohibition ended, so they could control it.
So which is it? Both of their momma's were white.
In my city, trash in a bin belongs to the disposal company that owns the bin, and trash on the curb belongs to the city. It is, in fact, considered stealing to pick through garbage on the curb, and also to pick through your employer's garbage bin, because the trash company is being denied money for trash that was supposed to go to them. Not really all that logical, but that's the way it works.
Don't forget too, that the earth is a giant magnet with a very powerful field. Granted it is fixed (not alternating) but still...