I had a Casio watch with a calculator built in. To make it work, one had to draw the numbers on screen, and the operators (+, -, x,/) too. On detecting "=" drawn, the watch gave the result.
This watch was bough in 1985. Prior enough, I guess.
From TFA: Our research shows that data in DRAM actually fades out gradually over a period of seconds to minutes, enabling an attacker to read the full contents of memory by cutting power and then rebooting into a malicious operating system.
But then, just reset the CPU and boot into a memory analysis program, without powering it down. Why bother with potential DRAM errors?
No, the comparison is if everyone decided to call weeks dekadays, but keep their length as 7 days. It's simply wrong. If you want to use the SI units, use the SI definition. Otherwise come up with your own terms.
Exact!
If I tell one: meet me in one dekadays, he still would be able to univocally figure out when it would be, notwithstanding the oddness of this unit.
And yet, if I say, please send me that 1Mbyte text file, and if he has both a 1,000,000 and a 1,048,576 text file, witch one should he send?
This misuse the SI units leads to unnecessary ambiguity. Please come up with own terms, of one wants to abbreviate 1048576 bytes. 1M is not a valid option; it has its precise meaning already defined much before this whole issue emerged.
-Batteries are neither cheap or clean: they contain lots of toxic chemicals, have a limited life time, and due to Ohm law, can only give back only half of the energy that was put into them.
I'm afraid this is incorrect.
I've been charging batteries with efficiency of around 85%. High-efficient switched mode chargers can reach even higher numbers.
And if the target load is much smaller than the internal battery impedance, you get near 100% efficiency using the stored energy, at least at battery's terminals.
Battery is not a waveguide. You don't match its impedance to the load (and lose half of the energy if doing that)!
The paper trail is not taken away with the voter!
The voter can see it, but not touch it. It is kept like ordinary ballots, for auditing pourpose, and it is not possible to identify the voter from the individual paper trail.
Cool. Finally something to tackle the 1.8 barrier, and smaller glasses for me. 8-)
Perhaps these lenses are made of it? They say their "lumicera" material has Nd=2.08 and superior strength, so it might be based on Alumina.
See the link for the lens photo. Relevant paragraph of the press-release text:
LUMICERA has the same light transmitting qualities as optical glass commonly used in today?s conventional camera lenses, however it has two very important properties that caught CASIO?s attention. Not only is LUMICERA?s refractive index (nd = 2.08) much greater than that of optical glass (nd = 1.5 ? 1.85 *2), it also offers superior strength. CASIO has been able to create a ceramic lens with extremely high levels of precision thanks to several factors. Under recommendations from CASIO the material itself has been refined for use in digital camera optical lenses by endowing it with improved transmission of short wavelength light and eliminating pores (air bubbles) that reduce transparency. CASIO has also established a complete process involving the perfect combination of polishing material, time and pressure, and by treating the lens with a special coating compatible with a high refractive index.
By incorporating this lens into the construction of the zoom lenses developed by CASIO, a reduction in profile of approximately 20% has been made possible.
The example he gives of buckets of water is flawed, since falling rain isn't *focused* like light is. Light entering a lens is just being focused on a smaller area. Sure the area is smaller, but it's also brighter.
No, it is not.
With the same aperture (say, f/2.8) and scene, there will be exactly the same brigthness. Aperture defines brigthness.
A larger sensor just requires the projected image to be spread out further.
That is why the lenses of big sensors are also big. And why you will not see a f/2.8, 12x zoom in large CCD format. The FZ10 have such a zoom just only due to its small CCD.
So we have a tradeoff here.
Big CCD: Good low noise, but expensive, heavy and poor-flexibility zooms;
Small CCD: Poor noise, but very clear and flexible zooms, often with 10x and still fast.
I am tired of arriving at some intersection and stopping at the red light, while nobody is actually crossing the intersection.
Instead of making smarter fining devices, why not build smarter stoplights? One that shows green to real drivers and red to the ghosts, instead of this inefficient fixed-time, last-century design?
Bonus: People will very soon realize that a red signal is surely followed by real perpendicular traffic. These stoplights will be more respected.
Slashdot Mirror
I had a Casio watch with a calculator built in. To make it work, one had to draw the numbers on screen, and the operators (+, -, x, /) too. On detecting "=" drawn, the watch gave the result.
This watch was bough in 1985. Prior enough, I guess.
From TFA:
Our research shows that data in DRAM actually fades out gradually over a period of seconds to minutes, enabling an attacker to read the full contents of memory by cutting power and then rebooting into a malicious operating system.
But then, just reset the CPU and boot into a memory analysis program, without powering it down. Why bother with potential DRAM errors?
Exact!
If I tell one: meet me in one dekadays, he still would be able to univocally figure out when it would be, notwithstanding the oddness of this unit.
And yet, if I say, please send me that 1Mbyte text file, and if he has both a 1,000,000 and a 1,048,576 text file, witch one should he send?
This misuse the SI units leads to unnecessary ambiguity. Please come up with own terms, of one wants to abbreviate 1048576 bytes. 1M is not a valid option; it has its precise meaning already defined much before this whole issue emerged.
You can use the request form itself to tell her how stupid she is.
It must fit in 100 chars, though.
I've been charging batteries with efficiency of around 85%. High-efficient switched mode chargers can reach even higher numbers.
And if the target load is much smaller than the internal battery impedance, you get near 100% efficiency using the stored energy, at least at battery's terminals.
Battery is not a waveguide. You don't match its impedance to the load (and lose half of the energy if doing that)!
The paper trail is not taken away with the voter!
The voter can see it, but not touch it. It is kept like ordinary ballots, for auditing pourpose, and it is not possible to identify the voter from the individual paper trail.
Go to the airptort and look at the things hanging off the wings. They are all fans powered by non-electric motors.
Of course they might be a bit noisy for your computer case.
And its exhaust a little bit too hot for cooling HDs, perhaps?
You have two filters types:
- Mutilayer coated filter: They reflect the filtered light;
- Colored glass filters: They absorb the filtered light.
Search for Schott BG-38 filter. This one absorbs IR while transmitting light. So it might very well defeat the PrivateEye system.
Cool. Finally something to tackle the 1.8 barrier, and smaller glasses for me. 8-)
Perhaps these lenses are made of it? They say their "lumicera" material has Nd=2.08 and superior strength, so it might be based on Alumina.
See the link for the lens photo. Relevant paragraph of the press-release text:
LUMICERA has the same light transmitting qualities as optical glass commonly used in today?s conventional camera lenses, however it has two very important properties that caught CASIO?s attention. Not only is LUMICERA?s refractive index (nd = 2.08) much greater than that of optical glass (nd = 1.5 ? 1.85 *2), it also offers superior strength. CASIO has been able to create a ceramic lens with extremely high levels of precision thanks to several factors. Under recommendations from CASIO the material itself has been refined for use in digital camera optical lenses by endowing it with improved transmission of short wavelength light and eliminating pores (air bubbles) that reduce transparency. CASIO has also established a complete process involving the perfect combination of polishing material, time and pressure, and by treating the lens with a special coating compatible with a high refractive index.
By incorporating this lens into the construction of the zoom lenses developed by CASIO, a reduction in profile of approximately 20% has been made possible.
The example he gives of buckets of water is flawed, since falling rain isn't *focused* like light is. Light entering a lens is just being focused on a smaller area. Sure the area is smaller, but it's also brighter. No, it is not. With the same aperture (say, f/2.8) and scene, there will be exactly the same brigthness. Aperture defines brigthness. A larger sensor just requires the projected image to be spread out further. That is why the lenses of big sensors are also big. And why you will not see a f/2.8, 12x zoom in large CCD format. The FZ10 have such a zoom just only due to its small CCD. So we have a tradeoff here. Big CCD: Good low noise, but expensive, heavy and poor-flexibility zooms; Small CCD: Poor noise, but very clear and flexible zooms, often with 10x and still fast.
I am tired of arriving at some intersection and stopping at the red light, while nobody is actually crossing the intersection.
Instead of making smarter fining devices, why not build smarter stoplights? One that shows green to real drivers and red to the ghosts, instead of this inefficient fixed-time, last-century design?
Bonus: People will very soon realize that a red signal is surely followed by real perpendicular traffic. These stoplights will be more respected.