Re:Asimov did say it first, and not just in fictio
on
Earth's Moon is a Rarity
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· Score: 2, Informative
Are you serious, or are you trolling?
For this you need Newtons law of Universal Gravity. The formula you want is right there. As you see, there two masses, and one radius. Let's assume we have a mass of 1kg on the surface of earth (and later on the moon), that's our m2 and as such we can ignore it the whole calculation.
The gravitational constant G = 6.67x10^-11 N m^2 kg^2. The formula we are going to use is F = G * m1 *m2 / r^2. We calculate the force exerced on an object on the surface of the stellar body, so we need to take its radius, because the center of gravity of the stellar body is well, in it's center.
So, first for Earth: F = ( 6.67x10^-11 * 5.9736x10^24 * 1 ) / ( 6371000 ^2 ) = 9.81 N
Now, the moon Earth: F = ( 6.67x10^-11 * 7.3477x10^22 * 1 ) / ( 1737100 ^2 ) = 1.62 N
So, as you can see the force exerced on a body of 1kg on the surface of the Moon is only 1/6 of the same object on the surface of Earth. Yet, as you can see, Earth has 80x the mass of the Moon. What did you ignore? The radius! That one has an even greater effect on gravity than the mass: it is a inverse square law.
You do realise that this is middle-school physics, don't you?
The first machines are in a workgroup, the second machines are in a Domain. That's the difference. I prefer the Ctrl-Alt-Del for locking my machine too (it was default like that in WinNT4.0), but at home I simply use Windows-L. That locks it too.
No, no, you're right.... The Piaggio Ape does have a bike handle. (The Smart car doesn't) They're just vintage. That's what you have to understand about them. Common, but not made anymore.
I was in Rome about three years ago and I live in Europe. I haven't seen anything you describe except the already mentioned Smart car (which has a normal steewing wheel) and the Piaggio Ape. That's what I think you saw in Italy. It still is very popular in Italy and it essentially is a motorcycle with a cage around it. However, they are collector vehicles. They haven't been made in ages.
I went to the Piaggio website, but they only make scooters these days (Gotta admit that the Piaggio MP3 looks cool). Now, you might have meant "in Italy they still use Scooters", which is definitely true, but you can't equate scooters to cars. The confusion between an Piaggio Ape and a real car is understandable though.
Half the performance of an A170 CDI? That gotta hurt! While it drove nicely, it was a not exactly anything I'd call "performance". The Mini One D is much snappier. Besides, I'm used to driving an Audi TT. That kind spoils my perception of most cars;-)
I didn't test drive the Smart Roadster. I'd probably would have found it out all by myself. They offered me a test drive, but I declined because bought my car in 2000, I am still very happy with it. Replacement wasn't just on the agenda, yet.
You're really telling me that a Smart Roadster cost as much as 45k€ (about 2 times a Mini)? That's more than what I paid for my TT (~35k€). Can't look it up, obviously since they aren't sold anymore, but I'd think it was more in the lines of the price of a Mini. (From wikipedia: "Still, the Roadster's price is not very far from that of a Fiat Barchetta or Mazda MX-5." Aaargh! In that case give me the MX-5!)
Yes, the roadster was horribly expensive. I agree. As I said in another post, they marked the existing ones down significantly and then they sold like hotcakes.
I liked the Roadster too. My wife used to have a Mercedes A-Class (She drives a Mini One D now) and the dealership of the Smart was evidently nearby. So, one day when we dropped her car off for maintenace we went in to look at the Roadsters. They were all "on sale" because they stopped making them. Apparently the popularity had never been higher. Odd, isn't it?;-) I considered it a while, but I didn't want to replace my car;-)
As for the ForTwo, it really is a great car. A friend of mine living in Antwerp has (had? They have kids now) one. Took me for a ride... Comfort is great. The only drawback, I found, was that the enige was kinda loud. Probably just me.
Oddly enough "small" cars are often great for tall people. You wouldn't expect that... I have another friend who is nearly 2m tall, and he swore on the Renault Twingo. In my car, and Audi TT, he could barely get behind the steering wheel, and bumped his knees against the dashboard even as passenger. Sure, the TT is small, but he had exactly the same problem with his dads Renault Laguna, which you would expect to be a bit larger.
the waiter doesn't get the full percentage. For example, at the restaurant I used to work at, 3% of the bill was taken out of my pocket to pay the busboys and the greeters
Okay, there we are... Essentially, it's not your income... It's part of your bosses income, and you get a part of it. How can I, as a customer, even guess that I have to pay all those other people with my tip. THE TIP IS FOR *YOU*. That your employer takes it is YOUR problem.
So frankly, why do you complain if the system is agaisnt you? Revolt... Oh, wait there are 100 people waiting to take your place. I'm sorry.. Capitalism.... Fuck, I didn't think of it.
Cope, the work of a waiter isn't worth more and I'm not going to pay the equivalent of a doctor in my country for getting served.
it seems to me that if you can't get a quality meal for 15 EUR, your country's restaurants are fucking you in the ass.
You obvioulsy don't drink wine during your meals. I do... A meal without wine is like a woman without breasts. Of course, I can eat for less than 40€/person, but that's only food. One has to live.
Oh, and as far as your comment goes: "10% is for low-class restaurants (just barely above fast food).".... Why don't you pay tips at the local Burger King, eh?
I calculated a price on base of the minimum wage of my country.... A country that is extremely expensive.... So, sure, if waiters deserve to earn nearly as much as a doctor, be my guest. (That's what you suggest.... 25% of 80€ = 20€) They don't.... Last doctor visit, I paid 27€. Not exactly that much, but that's what he gets for 15 minutes.
Well, you should inform the people that write travel guides. Every travel guide I've seen said 10% on meals, 1$ per night for the maid. I kept strictly to those guidelines, and even went above them.
The fact that you consider the kind of restaurants "high class" only speaks about your country. I couldn't get quality meals below those amounts. Waiters are by definition "minimum wage workers". The minimum wage in my country is 1500€/month gross, that translates to 10.4€/hour. Removing the 2€/hour they get anyway as I saw posted somewhere else in these threads, I should pay 8.4€/hour. Meaning 8.4€/4 (4*15minutes=60 minutes or an hour) = 2.24€. For anyone... The girl serving me a coffee as the guy serving me a three course meal. You see, 10% is generous by those terms.
That even ignores that the waiters probably don't have to pay income taxes on their tips. The waiters here have to pay income taxes on their salary.
a) If going to the restaurant were significantly cheaper in the US than in the EU, I would understand. Going to a restaurant that serves me the same quality of food I'm used to is going to cost me around 40€ per person. I've been to the US, and I couldn't stand anything below that price point. The waiter is going to spend a maximum of 15 minutes on me, and that's being generous! Bringing drinks, open bottle of wine, bring food, as how it's going, bring coffee. So, even if I tip them only 5€, that's a friggin 20€/hour! That's what I make as an IT specialist with 8 years experience back home! Go figure, but there is most certainly a reason that they are waiters and don't have a better job. So, they should just take their lives in their hands and go study something better.
b) Slashdot does allow the euro sign (€), and just like those waiters you just perhaps need a better education. The solution is HTML Entities.
c) I can't help it that you people have a braindead system for paying waiters in the first place...
I live in a country where tipping is not required. The waiters get a salary, so they are not dependant on it. That said, I usually tip. Especially when the service is friendly. On smaller amounts, I have no problem leaving 10 percent. Once I reach 5€, I have to be quite drunk or in a very good mood to actually give 10 percent.
I do the same in the US... (Well, there I always tip because I know they don't get a salary), but I still max out at a certain amount because 10% gets insane once you go out and eat with four. It's not that much more work to server four people in comparison to serve two people.
What annoys me with tipping is that you always need spare change. So there, I decide to go to eat with my wife and I have to pay 49.50€ and I only have a 50€ bill (typically what the ATM dispenses). I only *can* give 0.5€ a tip. That's it.
I know you're going to say: pay with credit card and use the extra "tip line". Well that line doesn't exist in my country. You can tell the waiter to charge more. That's not a problem, but I frankly do not trust that extra money to end up with the waiter. After all that money goes directly to the owner of the restaurant. (This problem also exists with the "tip line")
Besides, concerning tips, I always wonder: if the cashier at the local supermarket is very friendly... why don't we tip her? Just because she's a cashier and not a waitress? It's quite illogical, especially that I've met quite a few friendly cashiers.
I know all that... I know browsers have exploits, I know of the denial of service attack that is the "Ping Of Death". Yet... You forget one thing: the effort to get me. The effort to get those like me who know how to protect themselves as much as they can, is quite big. Sure, you they'll get me, but what about the guy 100x smarter than me and the guy 100x smarter than that guy?
Total control is not possible... You know that, I know that.
I personally think that they'll target Windows users, Mac users at best.... The others are the negligible amount that can't be monitored. With the right amount of money, I'll show Bin Laden & co how to use encryption and non-common operating systems. Every man has his price, I have mine...
That's what I don't understand. Anyone who know the Internet, already knows that the channel is not secure. The fact that I post here, readable for all, already illustrates the security of the Internet. Nobody on the Internet can be trusted. It's that simple. In the end it's all smoke and mirrors. A threath, that is not a threat because you know that Aunt Tully will be monitored.
The man in the middle attack could be avoided by using certificates and/or a ring of trust. Besides, a real parnoid person will disable all services. The exploit that could come along is something they can hope for, but then I'd have to point my browser/email/chat to a compromised site. The odds really aren't on their side...
Installing a rootkit requires a technical competence. I don't expect them to have this. As said, the only one they could do is a bug on the line. Installing anything on a computer isn't going to get them anywhere. They have to understand that first: a phone is not a computer.
I personally don't see a way to do what they want to do unless it's platform dependent, or if they have covered all platforms. Which is impossible, since computers are programmable devices. With enough dedication, and programmer can write his own TCP/IP stack for his own architecture and/or own operating system.
If that is true, what exactly stops me from installing a Windows machine as "bait" for them. They ring at my door: "Ihrem Rechner Bitte". I lead them to the P-IV 1.9GHz/512Meg RAM machine I got from a dumpster (no joke, I did) and let them install whatever they want on it.
After they leave I take out the machine I stored in my closet (or at my parents, or in the garage, or in my car), connect it and reformat the dumpster machine.
Whether it's politcally wrong (I agree), it is impossible. As a computer scientist, heck as a hobbyist hacker, they can try whatever they want. They cannot "own" our machines. Not as long as they physically install a bug on the ADSL line, and even then.... I know where to cut the line to get a signal.
Unless it's at the ISP, but then they shouldn't be talking about installing tracking devices/software on the users machines.
Okay, perhaps they can get through an OpenBSD/amd64 and a FreeBSD/amd64. There must be exploits. What about those that run OpenBSD/sparc4 and Linux/PPC? The point is: it is impossible to monitor all computers.
So, sure, I don't know for 100% certain that my installs are clean. I did however order my OpenBSD CD's from www.openbsd.org, and my FreeBSD CD is downloaded from an American site. While not 100%, I'm fairly certain, my machine is not compromised. Now, just assuming my OpenBSD machine is clean (it has been installed from a bought CD, made in Canada), my tcpdump logs do not show any suspicious traffic.
That doesn't work in Europe. Believe me.... Well, I can *buy* a motorcycle, but I won't be allowed to drive it on public roads until I get a license. A car license isn't enough to be allowed to drive a motorcycle.
Slashdot Mirror
Are you serious, or are you trolling?
For this you need Newtons law of Universal Gravity. The formula you want is right there. As you see, there two masses, and one radius. Let's assume we have a mass of 1kg on the surface of earth (and later on the moon), that's our m2 and as such we can ignore it the whole calculation.
Some data about Earth:
Some data about The Moon:
The gravitational constant G = 6.67x10^-11 N m^2 kg^2. The formula we are going to use is F = G * m1 *m2 / r^2. We calculate the force exerced on an object on the surface of the stellar body, so we need to take its radius, because the center of gravity of the stellar body is well, in it's center.
So, first for Earth: F = ( 6.67x10^-11 * 5.9736x10^24 * 1 ) / ( 6371000 ^2 ) = 9.81 N
Now, the moon Earth: F = ( 6.67x10^-11 * 7.3477x10^22 * 1 ) / ( 1737100 ^2 ) = 1.62 N
So, as you can see the force exerced on a body of 1kg on the surface of the Moon is only 1/6 of the same object on the surface of Earth. Yet, as you can see, Earth has 80x the mass of the Moon. What did you ignore? The radius! That one has an even greater effect on gravity than the mass: it is a inverse square law.
You do realise that this is middle-school physics, don't you?
I'd prefer to be a Unix guy. Been doing Linux and (mainly) OpenBSD for years, but I never managed to find a job in the sector. *sigh*
The first machines are in a workgroup, the second machines are in a Domain. That's the difference. I prefer the Ctrl-Alt-Del for locking my machine too (it was default like that in WinNT4.0), but at home I simply use Windows-L. That locks it too.
You know what pissed me off? That we're called "consumers"... It's degrading. I'm a customer, damnit!
No, no, you're right.... The Piaggio Ape does have a bike handle. (The Smart car doesn't) They're just vintage. That's what you have to understand about them. Common, but not made anymore.
I was in Rome about three years ago and I live in Europe. I haven't seen anything you describe except the already mentioned Smart car (which has a normal steewing wheel) and the Piaggio Ape. That's what I think you saw in Italy. It still is very popular in Italy and it essentially is a motorcycle with a cage around it. However, they are collector vehicles. They haven't been made in ages.
I went to the Piaggio website, but they only make scooters these days (Gotta admit that the Piaggio MP3 looks cool). Now, you might have meant "in Italy they still use Scooters", which is definitely true, but you can't equate scooters to cars. The confusion between an Piaggio Ape and a real car is understandable though.
Half the performance of an A170 CDI? That gotta hurt! While it drove nicely, it was a not exactly anything I'd call "performance". The Mini One D is much snappier. Besides, I'm used to driving an Audi TT. That kind spoils my perception of most cars ;-)
I didn't test drive the Smart Roadster. I'd probably would have found it out all by myself. They offered me a test drive, but I declined because bought my car in 2000, I am still very happy with it. Replacement wasn't just on the agenda, yet.
You're really telling me that a Smart Roadster cost as much as 45k€ (about 2 times a Mini)? That's more than what I paid for my TT (~35k€). Can't look it up, obviously since they aren't sold anymore, but I'd think it was more in the lines of the price of a Mini. (From wikipedia: "Still, the Roadster's price is not very far from that of a Fiat Barchetta or Mazda MX-5." Aaargh! In that case give me the MX-5!)
Yes, the roadster was horribly expensive. I agree. As I said in another post, they marked the existing ones down significantly and then they sold like hotcakes.
I liked the Roadster too. My wife used to have a Mercedes A-Class (She drives a Mini One D now) and the dealership of the Smart was evidently nearby. So, one day when we dropped her car off for maintenace we went in to look at the Roadsters. They were all "on sale" because they stopped making them. Apparently the popularity had never been higher. Odd, isn't it? ;-) I considered it a while, but I didn't want to replace my car ;-)
As for the ForTwo, it really is a great car. A friend of mine living in Antwerp has (had? They have kids now) one. Took me for a ride... Comfort is great. The only drawback, I found, was that the enige was kinda loud. Probably just me.
Oddly enough "small" cars are often great for tall people. You wouldn't expect that... I have another friend who is nearly 2m tall, and he swore on the Renault Twingo. In my car, and Audi TT, he could barely get behind the steering wheel, and bumped his knees against the dashboard even as passenger. Sure, the TT is small, but he had exactly the same problem with his dads Renault Laguna, which you would expect to be a bit larger.
Both the Smart Roadster and the Smart ForFour have been discontinued. They only make the ForTwo now.
the waiter doesn't get the full percentage. For example, at the restaurant I used to work at, 3% of the bill was taken out of my pocket to pay the busboys and the greeters
Okay, there we are... Essentially, it's not your income... It's part of your bosses income, and you get a part of it. How can I, as a customer, even guess that I have to pay all those other people with my tip. THE TIP IS FOR *YOU*. That your employer takes it is YOUR problem.
So frankly, why do you complain if the system is agaisnt you? Revolt... Oh, wait there are 100 people waiting to take your place. I'm sorry.. Capitalism.... Fuck, I didn't think of it.
Cope, the work of a waiter isn't worth more and I'm not going to pay the equivalent of a doctor in my country for getting served.
Fix your system...
it seems to me that if you can't get a quality meal for 15 EUR, your country's restaurants are fucking you in the ass.
You obvioulsy don't drink wine during your meals. I do... A meal without wine is like a woman without breasts. Of course, I can eat for less than 40€/person, but that's only food. One has to live.
Oh, and as far as your comment goes: "10% is for low-class restaurants (just barely above fast food).".... Why don't you pay tips at the local Burger King, eh?
I calculated a price on base of the minimum wage of my country.... A country that is extremely expensive.... So, sure, if waiters deserve to earn nearly as much as a doctor, be my guest. (That's what you suggest.... 25% of 80€ = 20€) They don't.... Last doctor visit, I paid 27€. Not exactly that much, but that's what he gets for 15 minutes.
Well, you should inform the people that write travel guides. Every travel guide I've seen said 10% on meals, 1$ per night for the maid. I kept strictly to those guidelines, and even went above them.
The fact that you consider the kind of restaurants "high class" only speaks about your country. I couldn't get quality meals below those amounts. Waiters are by definition "minimum wage workers". The minimum wage in my country is 1500€/month gross, that translates to 10.4€/hour. Removing the 2€/hour they get anyway as I saw posted somewhere else in these threads, I should pay 8.4€/hour. Meaning 8.4€/4 (4*15minutes=60 minutes or an hour) = 2.24€. For anyone... The girl serving me a coffee as the guy serving me a three course meal. You see, 10% is generous by those terms.
That even ignores that the waiters probably don't have to pay income taxes on their tips. The waiters here have to pay income taxes on their salary.
a) If going to the restaurant were significantly cheaper in the US than in the EU, I would understand. Going to a restaurant that serves me the same quality of food I'm used to is going to cost me around 40€ per person. I've been to the US, and I couldn't stand anything below that price point. The waiter is going to spend a maximum of 15 minutes on me, and that's being generous! Bringing drinks, open bottle of wine, bring food, as how it's going, bring coffee. So, even if I tip them only 5€, that's a friggin 20€/hour! That's what I make as an IT specialist with 8 years experience back home! Go figure, but there is most certainly a reason that they are waiters and don't have a better job. So, they should just take their lives in their hands and go study something better.
b) Slashdot does allow the euro sign (€), and just like those waiters you just perhaps need a better education. The solution is HTML Entities.
c) I can't help it that you people have a braindead system for paying waiters in the first place...
I live in a country where tipping is not required. The waiters get a salary, so they are not dependant on it. That said, I usually tip. Especially when the service is friendly. On smaller amounts, I have no problem leaving 10 percent. Once I reach 5€, I have to be quite drunk or in a very good mood to actually give 10 percent.
I do the same in the US... (Well, there I always tip because I know they don't get a salary), but I still max out at a certain amount because 10% gets insane once you go out and eat with four. It's not that much more work to server four people in comparison to serve two people.
What annoys me with tipping is that you always need spare change. So there, I decide to go to eat with my wife and I have to pay 49.50€ and I only have a 50€ bill (typically what the ATM dispenses). I only *can* give 0.5€ a tip. That's it.
I know you're going to say: pay with credit card and use the extra "tip line". Well that line doesn't exist in my country. You can tell the waiter to charge more. That's not a problem, but I frankly do not trust that extra money to end up with the waiter. After all that money goes directly to the owner of the restaurant. (This problem also exists with the "tip line")
Besides, concerning tips, I always wonder: if the cashier at the local supermarket is very friendly... why don't we tip her? Just because she's a cashier and not a waitress? It's quite illogical, especially that I've met quite a few friendly cashiers.
I know all that... I know browsers have exploits, I know of the denial of service attack that is the "Ping Of Death". Yet... You forget one thing: the effort to get me. The effort to get those like me who know how to protect themselves as much as they can, is quite big. Sure, you they'll get me, but what about the guy 100x smarter than me and the guy 100x smarter than that guy?
Total control is not possible... You know that, I know that.
I personally think that they'll target Windows users, Mac users at best.... The others are the negligible amount that can't be monitored. With the right amount of money, I'll show Bin Laden & co how to use encryption and non-common operating systems. Every man has his price, I have mine...
The man in the middle attack could be avoided by using certificates and/or a ring of trust. Besides, a real parnoid person will disable all services. The exploit that could come along is something they can hope for, but then I'd have to point my browser/email/chat to a compromised site. The odds really aren't on their side...
Installing a rootkit requires a technical competence. I don't expect them to have this. As said, the only one they could do is a bug on the line. Installing anything on a computer isn't going to get them anywhere. They have to understand that first: a phone is not a computer.
I personally don't see a way to do what they want to do unless it's platform dependent, or if they have covered all platforms. Which is impossible, since computers are programmable devices. With enough dedication, and programmer can write his own TCP/IP stack for his own architecture and/or own operating system.
So, it's just a way to look "good" in public? I can swallow that. However, for the technically apt, they become a laughing stock.
If that is true, what exactly stops me from installing a Windows machine as "bait" for them. They ring at my door: "Ihrem Rechner Bitte". I lead them to the P-IV 1.9GHz/512Meg RAM machine I got from a dumpster (no joke, I did) and let them install whatever they want on it.
After they leave I take out the machine I stored in my closet (or at my parents, or in the garage, or in my car), connect it and reformat the dumpster machine.
Whether it's politcally wrong (I agree), it is impossible. As a computer scientist, heck as a hobbyist hacker, they can try whatever they want. They cannot "own" our machines. Not as long as they physically install a bug on the ADSL line, and even then.... I know where to cut the line to get a signal.
Unless it's at the ISP, but then they shouldn't be talking about installing tracking devices/software on the users machines.
Okay, perhaps they can get through an OpenBSD/amd64 and a FreeBSD/amd64. There must be exploits. What about those that run OpenBSD/sparc4 and Linux/PPC? The point is: it is impossible to monitor all computers.
So, sure, I don't know for 100% certain that my installs are clean. I did however order my OpenBSD CD's from www.openbsd.org, and my FreeBSD CD is downloaded from an American site. While not 100%, I'm fairly certain, my machine is not compromised. Now, just assuming my OpenBSD machine is clean (it has been installed from a bought CD, made in Canada), my tcpdump logs do not show any suspicious traffic.
May I know how exactly they are going to get through my OpenBSD firewall and implant a trojan on my FreeBSD desktop? I'm a bit confused...
Go and look a bit around at Dell, will ya? They do exist... Found it in two minutes... there must be others.
I'm lucky, for me it's exactly the inverse.... I'll sure I'll get it on the other account eventually too...
That doesn't work in Europe. Believe me.... Well, I can *buy* a motorcycle, but I won't be allowed to drive it on public roads until I get a license. A car license isn't enough to be allowed to drive a motorcycle.