Depends on your definition of "slip". If you say a tire is slipping when its rotational speed does not match the theoretical zero-slip speed of a rolling tyre (which is a common definition), then yes, it is slipping pretty much constantly while driving. However, this "slip" is comparable to your being able to move your finger forward and backward while touching something, without the finger actually sliding over the surface, just using the elasticity in your fingertip. A tyre can keep doing this as it rolls around, which means the calculated "slip" is not really the tire sliding over the surface, but rather a continuously repeated deformation of the tyre surface which can give a significant difference between the theoretical zero-slip speed and the actual tire rotation speed. So while it is slipping according to the naive definition "speed does not match", it is usually not slipping when you use the "sliding, screeching" definition. That only happens in tight turns or when you drive like I do;-)
This deformation-pseudo-slip does generate some heat since rubber does not reversibly deform perfectly without energy loss, but this is nowhere near the amount of energy released in a "real" slip.
The description is a bit sensational: star stretched by the enormous tides of the black hole, huge jets of matter, etc... So then you have a look at the actual pictures from the telescope, expecting some spectacular video: hey, see that bright spot? That's it! Sure, I suppose the theory is all correct, but the description would make you believe that they actually saw this happening. Nope.
Yeah, I was quite disappointed with the video. I was expecting an explanation of the design, but all you get is "the engine is much more efficient and it produces less emissions and it is simple to produce, and because it has fewer parts it is much more efficient and produces less emissions, and it is also much more efficient and produces less emissions, and it would be ideal for hybrids and produces less emissions and is much more efficient.
There's actually a precedent for something similar, a few centuries ago: foreign sailors arriving in the US would have to line up and pull their pants down to be checked for STD's. One day the Europeans decided to do the same thing to American sailors arriving in Europe. It didn't take long for the US to stop the practice.
If you have full disk encryption, they will demand the password. If you don't give them the password, you go to jail. They don't even need a $5 wrench.
OK, but the Osborne takes several clock cycles (between 4 and 11) to process a single instruction, while the iPad's processor does several instructions per cycle (an average of 2.5). That gives you another factor of more than 10 right there. And then of course there's 16 versus 32 bit, vector units, GPU,... That makes a whole stable of Veyrons! Maybe we should use an airplane analogy instead. Space Shuttle versus Wright Brothers' Flyer?
Of course the comparison fails when comparing other properties, I was just talking about raw performance.
The Veyron has about 1000 horsepower, while the Strassenwagen had about 3/4 of a horse power. So actually even the Veyron is not quite powerful enough for the comparison, since the iPad is probably around 20000 times as fast as an Osborne, if not more (taking into account instructions per clock etc). I just took the highest and lowest HP I could find.
I think he meant the poor people within the subgroup of the population that is actually interested in libraries. There are of course even poorer people than those, but I doubt they will be up in arms about not being able to read books from the library.
Ever seen the "don't tase me bro" video? Tasers are great to replace guns, avoiding actually killing someone. But they should be seen as such, and not as "o, it's not dangerous, let's use the taser instead of getting our hands dirty". Problem is, officers don't seem to get this. The fact that they get their training from the company that makes money from them using the devices, doesn't help.
Tasers are really good in cases where the alternative is shooting or seriously injuring someone (or, in some cases, letting him injure himself). However, they are used far too often in situations where the victim is not violent at all. Where "come with me without violence or I will use this taser" would have avoided any problems, but instead they decided to just use the taser right away. Because it's not lethal, so no big deal. That's the problem with tasers. Because they do kill occasionally.
You could just tag it yourself. Like I just did. The icon is right next to the existing tags, and the new tag will appear if enough people add it.
And you're right about the effect, I live in Belgium, had never heard of this Sean Duffy guy before, but now I have seen his moment of fame and I will probably remember it if I ever hear of him in some other context again.
Top Gear actually did drive a car over a non-frozen lake in Iceland. While racing against a snowmobile doing the same. The snowmobile won, but the car did make it across as well. Real driving, no floating.
It doesn't take that much time to run down the battery. If the 55 mile figure is correct, and the average speed on the track is over 55 mph, it should take them less than an hour, right? And that's assuming a full battery to begin with, while they had probably already run it down quite a bit. They probably only would have needed to drive it for anoher 15 to 30 minutes or so to catch the atual low battery event. And if something went wrong (Clarkson forgetting his lines, sun in the wrong spot,...), they would simply need to charge it up to a few percent and do it over. I really can't see a good reason for simulating this, and fitting a spinning down turbine sound over it for crying out loud.
Exactly. A friend of mine once saw them in action in the French Alps during one of their "races": they unloaded the cars from trucks at the bottom of a hill and drove up a short stretch of twisting road, followed by the trucks which then picked them back up to bring them to the next stretch of the "race".
However, it seems that they went a little too far with Tesla, claiming breakdowns that didn't really happen. If this is true, Tesla has every right to sue. They deserve the free publicity, too.
Of course it does remain to be seen how far the truth was stretched. Maybe they only drove 27.5 miles and noted that the battery was half empty. That would sort of make their claim of 55 miles per charge legitimate even if they never actually ran down the battery. And did the brakes really break down or not? I guess we'll see in the lawsuit, or in the rectification either way.
Actually, if my personal situation was only a little bit different (no kids, a little bit more money, no regular long distance trips), I could realistically see myself buying one. And I do enjoy watching Top Gear, and this epidsode made me think "nah, I'll just wait until they make one that doesn't break down all the time".
Yes, something along the lines of "we didn't actually test the 55 miles per gallon figure, but now we have, and it turns out we were wrong. We deeply apologise, the actual figure turns out to be 53".
Slashdot Mirror
As long as you keep pacing while on the phone, it could work.
Depends on your definition of "slip". If you say a tire is slipping when its rotational speed does not match the theoretical zero-slip speed of a rolling tyre (which is a common definition), then yes, it is slipping pretty much constantly while driving. However, this "slip" is comparable to your being able to move your finger forward and backward while touching something, without the finger actually sliding over the surface, just using the elasticity in your fingertip. A tyre can keep doing this as it rolls around, which means the calculated "slip" is not really the tire sliding over the surface, but rather a continuously repeated deformation of the tyre surface which can give a significant difference between the theoretical zero-slip speed and the actual tire rotation speed. So while it is slipping according to the naive definition "speed does not match", it is usually not slipping when you use the "sliding, screeching" definition. That only happens in tight turns or when you drive like I do ;-)
This deformation-pseudo-slip does generate some heat since rubber does not reversibly deform perfectly without energy loss, but this is nowhere near the amount of energy released in a "real" slip.
The description is a bit sensational: star stretched by the enormous tides of the black hole, huge jets of matter, etc... So then you have a look at the actual pictures from the telescope, expecting some spectacular video: hey, see that bright spot? That's it! Sure, I suppose the theory is all correct, but the description would make you believe that they actually saw this happening. Nope.
Yeah, I was quite disappointed with the video. I was expecting an explanation of the design, but all you get is "the engine is much more efficient and it produces less emissions and it is simple to produce, and because it has fewer parts it is much more efficient and produces less emissions, and it is also much more efficient and produces less emissions, and it would be ideal for hybrids and produces less emissions and is much more efficient.
There's actually a precedent for something similar, a few centuries ago: foreign sailors arriving in the US would have to line up and pull their pants down to be checked for STD's. One day the Europeans decided to do the same thing to American sailors arriving in Europe. It didn't take long for the US to stop the practice.
If you have full disk encryption, they will demand the password. If you don't give them the password, you go to jail. They don't even need a $5 wrench.
Just one small detail: it's $100 per year.
OK, but the Osborne takes several clock cycles (between 4 and 11) to process a single instruction, while the iPad's processor does several instructions per cycle (an average of 2.5). That gives you another factor of more than 10 right there. And then of course there's 16 versus 32 bit, vector units, GPU,... That makes a whole stable of Veyrons! Maybe we should use an airplane analogy instead. Space Shuttle versus Wright Brothers' Flyer?
Of course the comparison fails when comparing other properties, I was just talking about raw performance.
The Veyron has about 1000 horsepower, while the Strassenwagen had about 3/4 of a horse power. So actually even the Veyron is not quite powerful enough for the comparison, since the iPad is probably around 20000 times as fast as an Osborne, if not more (taking into account instructions per clock etc). I just took the highest and lowest HP I could find.
at least Ozzy has an original style.
From a raw performance point of view, the iPad vs Osborne comparison would be more like Bugatti Veyron vs 1870 Strassenwagen.
Wow, indeed, how did that post get rated -1?! You can disagree with it, but that's no reason to mod it down like that.
I think he meant the poor people within the subgroup of the population that is actually interested in libraries. There are of course even poorer people than those, but I doubt they will be up in arms about not being able to read books from the library.
You could probably make something like this with circular saw blades, too. Or radiators, toilets, engine blocks,...
Ever seen the "don't tase me bro" video? Tasers are great to replace guns, avoiding actually killing someone. But they should be seen as such, and not as "o, it's not dangerous, let's use the taser instead of getting our hands dirty". Problem is, officers don't seem to get this. The fact that they get their training from the company that makes money from them using the devices, doesn't help.
I prefer to be tasered rather than shot
I prefer to be handcuffed rather than tasered
I prefer to be talked to rather than handcuffed
Tasers are really good in cases where the alternative is shooting or seriously injuring someone (or, in some cases, letting him injure himself). However, they are used far too often in situations where the victim is not violent at all. Where "come with me without violence or I will use this taser" would have avoided any problems, but instead they decided to just use the taser right away. Because it's not lethal, so no big deal. That's the problem with tasers. Because they do kill occasionally.
Hey, a Belgian traveler from the future, in a Slashdot thread about UFO's!
You could just tag it yourself. Like I just did. The icon is right next to the existing tags, and the new tag will appear if enough people add it.
And you're right about the effect, I live in Belgium, had never heard of this Sean Duffy guy before, but now I have seen his moment of fame and I will probably remember it if I ever hear of him in some other context again.
Top Gear actually did drive a car over a non-frozen lake in Iceland. While racing against a snowmobile doing the same. The snowmobile won, but the car did make it across as well. Real driving, no floating.
Mod parent funny!
It doesn't take that much time to run down the battery. If the 55 mile figure is correct, and the average speed on the track is over 55 mph, it should take them less than an hour, right? And that's assuming a full battery to begin with, while they had probably already run it down quite a bit. They probably only would have needed to drive it for anoher 15 to 30 minutes or so to catch the atual low battery event. And if something went wrong (Clarkson forgetting his lines, sun in the wrong spot,...), they would simply need to charge it up to a few percent and do it over. I really can't see a good reason for simulating this, and fitting a spinning down turbine sound over it for crying out loud.
Actually, I meant miles per charge, of course. Which is about a gallon full of electrons.
Exactly. A friend of mine once saw them in action in the French Alps during one of their "races": they unloaded the cars from trucks at the bottom of a hill and drove up a short stretch of twisting road, followed by the trucks which then picked them back up to bring them to the next stretch of the "race".
However, it seems that they went a little too far with Tesla, claiming breakdowns that didn't really happen. If this is true, Tesla has every right to sue. They deserve the free publicity, too.
Of course it does remain to be seen how far the truth was stretched. Maybe they only drove 27.5 miles and noted that the battery was half empty. That would sort of make their claim of 55 miles per charge legitimate even if they never actually ran down the battery. And did the brakes really break down or not? I guess we'll see in the lawsuit, or in the rectification either way.
Actually, if my personal situation was only a little bit different (no kids, a little bit more money, no regular long distance trips), I could realistically see myself buying one. And I do enjoy watching Top Gear, and this epidsode made me think "nah, I'll just wait until they make one that doesn't break down all the time".
Yes, something along the lines of "we didn't actually test the 55 miles per gallon figure, but now we have, and it turns out we were wrong. We deeply apologise, the actual figure turns out to be 53".