Unfortunately, letting the phone sit on the dash of your car while charging causes it to heat up, significantly reducuing the life of your lithium battery. A better choice is to use an external solar panel to ship power ot your phone (which is tucked safely away, out of direct sunlight). So have we come full circle on this ?
Most of the AC motors driving significant loads (i.e. not clocks), are induction motors and are going to run with some amount of slip, up to several percent, depending on line frequency, voltage, load and design. While you can expect some change in speed when the frequency varies, it is not going to be linear nor easily predictable.
And for the record, 3Hz variation in frequency is huge. Try 1/10 that amount for a really bad system.
Okay, some of these are funny, just because they are so absurd.
Where I have trouble is in the realization that there are far too many of the pointless labels, which are generally ignored. So people get in the habit of ignoring ALL labels, even the important ones.
The TSA groping is "optional", and intended for those that do not wish to use the new full body xray machines. So the terrorist with a Bomb-On-Board should probably choose the grope line. I'm betting that there are even some terrorists out there that can figure this out. What this means for us, the grope option will soon go away and we will have to visit the x-ray machine if we want to fly.
I find it incredible that poll after poll finds "most" americans are not bothered by the full body x-ray machines. Is the news media lying to us or is the slashdot crowd just more upset over this than the average american?
Okay, take an "average" home with 1500 Sq=Ft of living space. Slightly more than that is available for roof area (counting Garage, eves, porches, etc) so if you assume 1600 Sq-Ft of roof ==> just shy of 150 sq-meters.
Typical summer solar input is around 1000 W/M^2, but we need to account for latitude (about 80%) and roof slope (~70%) so usable energy input is 560 W/m^2. Factor in typical conversion efficiency (20%) and you end up with 112 W/M^2. Cover the whole roof and that gives you a solar maximum of >16 KW, more than enough to power a home. So I will agree with the statement, its $/watt that is important, not raw efficiency. ~
If you do not wish to support the "discount card game", then vote with your feet. Shop at stores that do not have the cards. If enough people do this, you will see these "penalty cards" disappear.
An interesting video, but he screwed up his nanosecond time analogy. A nanosecond is to a second as a second is to 30 years, not 3 years as he states. (See time around 2:05)
Still, an interesting concept (and yes, I'm picking nits)
> the actual press release from the people that *made* the thing. It has > better math, as well as a couple fancy graphs. Perhaps this is what > should have been posted to/. instead of a 3rd party report?
While I can sympathize with the general comment that witnesses are inaccurate, if Toyota acceleration problems are reported 10 times as often as those from other manufacturers, there is something worth investigating. Be it software, floor mats, bad springs, poor pedal placement or whatever, there is enough evidence that some kind of problem exists. I am disappointed it has taken Toyota so long to address these issues.
> I am sick of people assuming that since something uses > solar power to generate the electricity, that it will > only work when the sun is shining. Ever heard of batteries?
I completely agree with the above statement. How else will the ISS astronauts survive on cloudy days when there is no sun ??
With my luck, I would go through the trouble of building it and the idiot behind me would be driving an older car.... you know, with points, a condenser, and a coil providing the spark. All this high-tech effort for not.
When you buy electricity from the the power company, they charge you retail rates. When you provide power to the grid (i.e. your solar/wind system is producing more then you are currently using), even when they are required to buy the power pack, it is at wholesale rates.... typically.20 to.25 of retail rates. This difference covers their transmission costs.
Tantalum capacitors are used in a wide range of electronic products due to:
High Volumetric efficiency
Excellent power dissipation ability
High reliability
Wide operating temperature
Better frequency characteristics than aluminum electrolytics
It is easily argued that Tantalum caps can be found about half of the electronic products on the market today.
Not sure where the Cellphone exclusive idea came from, but it is like saying that plastics are the only thing that is made from crude oil.
One of the initial companies to form Verizon was GTE, also known as "Gross Technological Error" so their continuing troubles do not surprise me in the least
I noticed Southwest is absent from your list. No bag fees, and the flight is likely cheaper than AA. As for Wi-Fi, Sothwest is also testing the market for this on 4 of their planes.
It would have to be way more than worth it to make up for the $35 luggage charge. By the time you figure in the annoyance factor, the AA ticket needs to be at least $50 less than the competition before I would even consider it.... Wi-Fi or no Wi-Fi !
I have just about given up on the dual standard for ASIC area. Having only the choice between mils^2 or mm^ I have decided to do all my measurements in pico-acres.
FWIW - 1 pico-acre is darned close to 2*Pi square mils:-)
Slashdot Mirror
Unfortunately, letting the phone sit on the dash of your car while
charging causes it to heat up, significantly reducuing the life
of your lithium battery. A better choice is to use an external
solar panel to ship power ot your phone (which is tucked safely
away, out of direct sunlight). So have we come full circle on this ?
I sometimes wonder if there is much difference between using Monster Cable and coat hanger wire as far, as sound quality goes.
I wonder if most people realize that doing this immediately
gets you on the suspect list. And you thought you had red
tape already.......
> ... encouraging truck drivers to join their First Observer
> Highway Security Program an report anything suspicious
> that they see to authorities
So, can we apply for government cash back on this new Ford ?
NEVER put your password on a post-it note stuck to your monitor!!
The correct place for it is under the keyboard
Most of the AC motors driving significant loads (i.e. not clocks), are induction motors and are going to run with some amount of slip, up to several percent, depending on line frequency, voltage, load and design. While you can expect some change in speed when the frequency varies, it is not going to be linear nor easily predictable.
And for the record, 3Hz variation in frequency is huge. Try 1/10 that amount for a really bad system.
Okay, some of these are funny, just because they are so absurd.
Where I have trouble is in the realization that there are far too many of the pointless labels, which are generally ignored. So people get in the habit of ignoring ALL labels, even the important ones.
Thats when it gets dangerous.
Kinda like "Bob the Builder"
A superhero with the ability to do construction !!
And, unlike steel, graphene is quite flamable !!
The TSA groping is "optional", and intended for those that do not wish to use the new full body xray machines. So the
terrorist with a Bomb-On-Board should probably choose the grope line. I'm betting that there are even some terrorists
out there that can figure this out. What this means for us, the grope option will soon go away and we will have to visit
the x-ray machine if we want to fly.
I find it incredible that poll after poll finds "most" americans are not bothered by the full body x-ray machines. Is the news
media lying to us or is the slashdot crowd just more upset over this than the average american?
Okay, take an "average" home with 1500 Sq=Ft of living space. Slightly more than
that is available for roof area (counting Garage, eves, porches, etc) so if you
assume 1600 Sq-Ft of roof ==> just shy of 150 sq-meters.
Typical summer solar input is around 1000 W/M^2, but we need to account for latitude
(about 80%) and roof slope (~70%) so usable energy input is 560 W/m^2. Factor in
typical conversion efficiency (20%) and you end up with 112 W/M^2. Cover the whole
roof and that gives you a solar maximum of >16 KW, more than enough to power a home.
So I will agree with the statement, its $/watt that is important, not raw efficiency.
~
Emacs is a great programming environment. All it really needs is a decent text editor
If you do not wish to support the "discount card game", then vote with your
feet. Shop at stores that do not have the cards. If enough people do this,
you will see these "penalty cards" disappear.
An interesting video, but he screwed up his nanosecond time
analogy. A nanosecond is to a second as a second is to 30
years, not 3 years as he states. (See time around 2:05)
Still, an interesting concept (and yes, I'm picking nits)
So, if the velocity graph has no units, is it safe to
assume the measurement is in "Furlongs Per Fortnight" ??
Anybody have a metric equivalent ?
> http://www.jaxa.jp/press/2010/07/20100709_ikaros_e.html
> the actual press release from the people that *made* the thing. It has /. instead of a 3rd party report?
> better math, as well as a couple fancy graphs. Perhaps this is what
> should have been posted to
While I can sympathize with the general comment that witnesses are inaccurate, if Toyota acceleration problems are reported 10 times as often as those from other manufacturers, there is something worth investigating. Be it software, floor mats, bad springs, poor pedal placement or whatever, there is enough evidence that some kind of problem exists. I am disappointed it has taken Toyota so long to address these issues.
I'm reminded of the radio Shack slogan:
You've got questions, we've got blank stares
> I am sick of people assuming that since something uses
> solar power to generate the electricity, that it will
> only work when the sun is shining. Ever heard of batteries?
I completely agree with the above statement. How else will
the ISS astronauts survive on cloudy days when there is no
sun ??
With my luck, I would go through the trouble of building it and the idiot behind me would be driving an older car.... you know, with points, a condenser, and a coil providing the spark. All this high-tech effort for not.
When you buy electricity from the the power company, they charge you .20 to .25 of retail rates. This difference covers their
retail rates. When you provide power to the grid (i.e. your solar/wind
system is producing more then you are currently using), even when they
are required to buy the power pack, it is at wholesale rates....
typically
transmission costs.
So how do they justify the surcharge ??
Tantalum capacitors are used in a wide range of electronic products
due to:
High Volumetric efficiency
Excellent power dissipation ability
High reliability
Wide operating temperature
Better frequency characteristics than aluminum electrolytics
It is easily argued that Tantalum caps can be found about half of the
electronic products on the market today.
Not sure where the Cellphone exclusive idea came from, but it is like
saying that plastics are the only thing that is made from crude oil.
One of the initial companies to form Verizon was GTE,
also known as "Gross Technological Error" so their
continuing troubles do not surprise me in the least
I noticed Southwest is absent from your list.
No bag fees, and the flight is likely cheaper
than AA. As for Wi-Fi, Sothwest is also testing
the market for this on 4 of their planes.
And its nice to be able to pick your seat.
It would have to be way more than worth it to make up for the $35 luggage charge. By the time you figure in the annoyance factor, the AA ticket needs to be at least $50 less than the competition before I would even consider it.... Wi-Fi or no Wi-Fi !
I have just about given up on the dual standard for ASIC area.
Having only the choice between mils^2 or mm^ I have decided to
do all my measurements in pico-acres.
FWIW - 1 pico-acre is darned close to 2*Pi square mils :-)