You know, I've been doing this since I was little, before I knew anything about number bases. I've also worked with computers since I was like 10. Yet up until your post, I had never considered that what I was doing was counting in base-5, I just thought it was more convenient than counting in base-1 (is that what normal finger counting is??)
Re:Remember that other DeCSS?
on
The DeCSS Haiku
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· Score: 1
But think about it. This favours the person searching for decss for his own use over someone trying to get it removed.
If I wanted the code to use on my linux box, I only have to find one copy of the 'proper' version, and I am successful.
If I wanted to find copies so I could serve a takedown notice, I can only be successful by finding all of the 'proper' copies.
Isn't this like the hypothetical game, Prisoner's dilema, or something.
Two prisoners on charge for the same crime. Each one is asked to turn in the other, but does not know what the other's decision is. If A turns in B, but B does not turn in A, B is hung and A goes free. If A turns in B and B turns in A, they both get hung. But if neither prisoner turns in the other, they both stay in prison, but neither gets hung.
From a selfish, me me me, point of view, the best result is to turn in the other prisoner. But then there is a chance you will both die. The best non-selfish view is to refuse to turn in the other. But this only works if the other does the same. Kind of a paradox.
Similarly for two countries. If they both agree to disarm, they can remain as they are. If one disarms but the other does not, the first can conquer the second. If neither disarms, you end up with MAD (mutually assured destruction).
Banni
Re:does this break ....PROBABLY REDUNDANT BY NOW!
on
Stop, Light.
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· Score: 2
First off, c is the speed of light in a vacuum, and light travels at differents speeds in different media.
Correct so far.
This means that when moving from a medium into one in which the speed of light is slower than the first, the lightwaves/photons (whatever) need to release some energy, (As energy=hf, and f=speed of light/wavelength [sorry, couldn't find lambda sign]so there would be a difference in energy after going into a "slower" medium) which is given off as, I believe, flashes of visible light (yes?, no? maybe? I'm unsure)[Also, then how does light speed up going into faster media? Does it? What accelerates it if it does? Anyone?)
When moving into a denser medium (as in one with a higher index of refraction so it slows down the light travelling through it), it's wavelength is also shortened. It's frequency, however remains the same. Since f=v/wavelength, and v and wavelength are both reduced by the same factor (to do with the ratios (ratii??) of the refractive indices of the two media), then f remains constant.
Another way to see this is to think about the light wave as it enters the medium. Imagine the peaks and troughs of the wave as they cross the boundary. For each peak entering, there must be a corresponding peak leaving, hence the frequency remains constant.
When light enters a medium in which it can travel faster, the inverse happens. This still doesn't break any rules about faster then c, unless you go from a vacuum, to something less dense, but I guess that ain't possible.
As far as flashes being observed, these are simply due to the fact that as the light crosses a boundary between two substances with differing refactive indices, some reflection occurs. This reduces the intensity of the light, but does not affect the frequency. This leads on to things such as antireflective coatings, where you go through intermediate layers to 'soften' the effect of reflections, to things such as impedence matching in wires (hence why some people spend money on 'matched' cables for AV systems, trying to improve quality by reducing reflections along the cables).
Or something like this.
Also from the site...
"7 NTSC DVD's...", "7 NTSC VHS tapes..."
That's great for USians and others who have access to TVs that are NTSC capable, but when's the PAL version coming????
Just my little whinge (and that's what she said too)
Slashdot Mirror
You know, I've been doing this since I was little, before I knew anything about number bases. I've also worked with computers since I was like 10. Yet up until your post, I had never considered that what I was doing was counting in base-5, I just thought it was more convenient than counting in base-1 (is that what normal finger counting is??)
But think about it. This favours the person searching for decss for his own use over someone trying to get it removed.
If I wanted the code to use on my linux box, I only have to find one copy of the 'proper' version, and I am successful.
If I wanted to find copies so I could serve a takedown notice, I can only be successful by finding all of the 'proper' copies.
Isn't this like the hypothetical game, Prisoner's dilema, or something.
Two prisoners on charge for the same crime. Each one is asked to turn in the other, but does not know what the other's decision is. If A turns in B, but B does not turn in A, B is hung and A goes free. If A turns in B and B turns in A, they both get hung. But if neither prisoner turns in the other, they both stay in prison, but neither gets hung.
From a selfish, me me me, point of view, the best result is to turn in the other prisoner. But then there is a chance you will both die. The best non-selfish view is to refuse to turn in the other. But this only works if the other does the same. Kind of a paradox.
Similarly for two countries. If they both agree to disarm, they can remain as they are. If one disarms but the other does not, the first can conquer the second. If neither disarms, you end up with MAD (mutually assured destruction).
Banni
Correct so far.
This means that when moving from a medium into one in which the speed of light is slower than the first, the lightwaves/photons (whatever) need to release some energy, (As energy=hf, and f=speed of light/wavelength [sorry, couldn't find lambda sign]so there would be a difference in energy after going into a "slower" medium) which is given off as, I believe, flashes of visible light (yes?, no? maybe? I'm unsure)[Also, then how does light speed up going into faster media? Does it? What accelerates it if it does? Anyone?)
When moving into a denser medium (as in one with a higher index of refraction so it slows down the light travelling through it), it's wavelength is also shortened. It's frequency, however remains the same. Since f=v/wavelength, and v and wavelength are both reduced by the same factor (to do with the ratios (ratii??) of the refractive indices of the two media), then f remains constant.
Another way to see this is to think about the light wave as it enters the medium. Imagine the peaks and troughs of the wave as they cross the boundary. For each peak entering, there must be a corresponding peak leaving, hence the frequency remains constant.
When light enters a medium in which it can travel faster, the inverse happens. This still doesn't break any rules about faster then c, unless you go from a vacuum, to something less dense, but I guess that ain't possible.
As far as flashes being observed, these are simply due to the fact that as the light crosses a boundary between two substances with differing refactive indices, some reflection occurs. This reduces the intensity of the light, but does not affect the frequency. This leads on to things such as antireflective coatings, where you go through intermediate layers to 'soften' the effect of reflections, to things such as impedence matching in wires (hence why some people spend money on 'matched' cables for AV systems, trying to improve quality by reducing reflections along the cables).
Or something like this.
Banni
Also from the site...
"7 NTSC DVD's...", "7 NTSC VHS tapes..."
That's great for USians and others who have access to TVs that are NTSC capable, but when's the PAL version coming????
Just my little whinge (and that's what she said too)