CaptainPanic

FTFY On topic, I think we should sticky the original article. We have some amateur trolls and quacks that could learn from that. I love a good troll... it's the bad ones that annoy me.

Popcorn, the problem people have here is that you have a couple of examples.... and that is not enough to extrapolate that to a general rule. It might be just coincidence. And there are methods - using statistics - to prove that it is not just coincidence. The best method is to take a MUCH larger sample, meaning you look at many many more suicides, and see if in all those cases siblings play any role. We're not talking 10 more, but we're talking hundreds to thousands before this becomes statistically significant. But your "theory" has another problem. The large majority of people have siblings. So, it is extremely likely that someone who commits suicide also has siblings. This link says that 80% of Americans (pdf warning) have at least one sibling. It is like saying: "all cases of suicide or attempted suicide was by people who were breathing air containing oxygen". It's true, but it's a pretty useless remark.

I seriously doubt that anyone here is willing to do any programming... so unless you already build some kind of user-interface for your code, we cannot help you. We're talking about language here, and if that is in written form, storage cannot be the bottleneck. If you have a user interface, you would be able to place that on a website, or you can even let it communicate on an IRC channel. Cap'n Refsmmat just gave you permission to place a link - essentially advertising it on our forum. But I get the feeling that you actually have just a smart piece of code, which is nowhere near ready to actually communicate with humans. I think there is a bit of work to be done before that "chat" would be operational. Am I correct? Maybe some of our IT experts would be able to point out some simple user interface that you could use with little effort, to allow your "code" to talk to a human.

Interesting post. I cannot completely agree though. I interpret this as a question about who has the responsibility for the situation you're all in. If the public cannot be blamed for the situation it is in... If the politicians cannot be expected to bring any changes soon... If the corporations are not expected to change their methods... Then who will? You are describing a situation where the richest country in the world is stuck in a type of systematic lock-in, where you do not progress toward an optimal situation, simply because of the situation you find yourself in right now. And there is no way out. I disagree... People can be expected to make choices. Information is available (this thread is sufficient proof of that), and people are responsible for which information they receive. The USA is not a dictatorship, and information is not limited. Everything is available. Sure, certain (commercial) voices scream a lot louder than others, but that does not remove the responsibility of people to make a choice. I would agree with you if people simply had no choice. But they do. And that places the responsibility with them. And with us. People who are well-informed have a responsibility to spread information. This thread seems to be doing a decent job at that.

Just for the record, are we talking about a satellite in orbit... or a satellite which is in a ballistic trajectory and will fall back to earth after launch? Also, just for the record, if you are planning to launch an actual rocket to anything above 1 km (or perhaps even 0.5 km), you might want to contact local authorities and/or the aviation authorities. You don't even have to hit an airplane to get into trouble with the authorities. Shooting rockets to high altitudes and/or long distances will eventually be seen as a crime, or even terrorism. This is no joke. My advice: join a rocket club near you. They have experience, and will help you with lots and lots of practical issues.

Just to clarify, the OP specifically mentioned the following keywords: Satellite, Dragon from SpaceX. Therefore, I assume the OP means to get something into orbit, at orbital velocity. Yes, I believe you can do that with highschool knowledge. Raw power The simplest technology is a solid rocket booster, which is just the same as any fireworks rocket. It has a (shaped) core of fuel, which burns at a certain velocity, producing a certain amount of thrust. That core of fuel must have the right shape so that it burns in the right way. But this is nothing that you cannot solve by trial and error. It would be a really (really) expensive trial, but we are talking "Theoreically" here, so it is possible. Also, you would have to lay your hands on some better fuel than ordinary gunpowder used in fireworks. But again, theoretically the diploma you hold is no limiting factor here. Attitude control So, how do you steer that rocket? Luckily, you can do that while that big rocket is just burning away. You can either use "thrust vector control", which is a fancy name for turning the nozzle of the rocket. Or you could use smaller thrusters on the side of the rocket (e.g. Vernier thrusters). No rocket science there. Getting into the right orbit To me, the most difficult would be to calculate where you need to be at what time. If you can calculate the exact trajectory that you want to follow, then you can use ordinary GPS to see where you are going, and make corrections. I actually don't know how to do any calculations... but I wonder how far you could get with highschool maths. In the past, finding out where you are was a major challenge. But since GPS satellites are at very high orbits, you can use them to get into low orbits without problems, thus removing one of the major hurdles.

! Moderator Note I am (temporarily?) closing this thread, while we review whether our forum is the right place to discuss the practical sides of smoke bombs. Initially, my objection is that you wish to actually use this against "an opponent". Smoke bombs are not without risk, and I am sure that at least where I live they are against the law. Therefore, using a smoke bomb against a certain person might actually not be simply against the law, but a serious crime. [edit] Upon review, we agreed that it is this forum's recommendation not to build your own smoke bombs, certainly not for the use against another person. If you wish to use smoke bombs for recreational purposes, such as paintball, there are commercial solutions. We advise to use the commercial options, taking into account all relevant safety procedures. The thread remains closed. Thread closed

(The following is slightly simplified) When engineers make a mass and energy balance of a process, the energy balance is expressed in Enthalpy. Enthalpy is used to describe how something heats up or cools down, and what the temperature becomes if you put a certain amount of energy in, or if you remove some. Adding or removing energy can be dome in multiple ways (external heating, reaction, stirring), and will result in a change in enthalpy, which is (often) expressed and measured as a change in temperature. Sometimes "enthalpy balance" is used as a synonym for "energy balance", but I have to admit that this may be because some people are a little flexible with definitions.

I think that an expert eye is better than a computer at judging an X-ray picture to see if there is a bone-fracture or not. But I am no expert.

This is homework. We do not answer homework questions straight away. You have to show us what you did to try to solve the question so far. Also, I used my moderator powers to remove the double post.

! Moderator Note Thread closed Good. So is everybody else. This thread has been breaking enough rules already. To everybody involved, please read our forum rules, as well as the additional rules for the Speculations forum, before starting another thread like this. Thread closed.

! Moderator Note A little reminder to all posting here: the thread is written in the year 2004. None of the people involved in the discussion are active anymore. Only the post by teatree (post #24) is new. teatree, Maybe it would be wise to start a new thread (right here in Engineering) on the same topic. That way, people do not get confused by fossilized posts. We (mods) will then close this thread. The same goes for everybody else. If you feel the need to reply, please do so in a fresh thread. This thread is a bit dusty and moldy.

A bubble is not a subatomic particle, so yeah, that is pretty inconsistent. You probably mean that if you split a molecule of oxygen, you get two atoms of oxygen. The oxygen molecule (O2) consists of two oxygen atoms (O). [ce]O2 -> 2 O[/ce] Sidenote [edit]: You scored two troll points with that (hopelessly off-topic) question btw. You'll certainly trick people into replying again. We like talking about particles here. Good call. If you want more troll points, you have to trigger people's interest, and to offend them at the same time (obviously without getting yourself banned).

In comparison to the scientists I know, engineers really often work backwards. First fix it, and only then figure out why that actually worked (time permitting). Certainly doesn't guarantee that you end with the best solution, but at least it will work. Scientists will eventually find the best solution, but cannot guarantee it is within the deadline and budget. (And I admit that I paint a very black-and-white picture). I often just don't have the time to do much research.

I learn more when I have a practical issue or question to solve. It focuses me. I really struggle to learn just for the sake of learning. I need to apply knowledge to solve problems or answer questions.

! Moderator Note Ott, Our forum rules, section 2.7 say: "Advertising and spam is prohibited. We don't mind if you put a link to your noncommercial site (e.g. a blog) in your signature and/or profile, but don't go around making threads to advertise it. Links in posts should be relevant to the discussion. Users advertising commercial sites will be banned." You broke that rule, so the link was removed. Next time you will be banned as a spammer. [edit] Upon review, we (mods) felt it might be useful to clarify this a little further. We want you to introduce the topic that you want to discuss here on our forum... at this moment, the opening post contains zero information. That, and the fact that your link, through another link went to a commercial site, is against the rules.

I just read through the questions out of curiosity. I am not an expert at all, and my formal education is not related to this. Still, your answers seem reasonable. Just a hint though: if you write a thread title on a forum, don't use abbreviations like CS. To me, CS means carbon storage, or CO2 storage. I still have no idea what you meant with CS. A clear title will attract more views.

Not just the specific heat matters. Water is a liquid, and it can mix. Finally, water is also transparent, and sunlight can penetrate into the liquid. On land it is absorbed exclusively by the top layer. m_ellini, if this is homework, please post it there. You are doing nobody a favor by just getting the answers to homework without thinking about it.

I am not sure what human rights would have to say about this, but I think that it would be totally unethical to keep any person as a test subject. Cloning a Neanderthal with the purpose to do research would therefore be unethical. Is there any way to guarantee a cloned Neanderthal a normal life? I do not think so. Research would show a massive interest, and this person would stand out as someone / something special.

Writing on teh #forum, writing a new post about #twitter, as requested by @allmyfavoritefriendsonSFN. Check it out www.scienceforums.net

Even if it was just a little while His last post made me smile So I clicked on the little green button At a post of Popcorn Sutton But alas, it is a bummer One swallow doesn't make a summer It's quite sad to know his fate Popcorn Sutton will never moderate

Watch it now. You're making the Higgs Boson angry! And he's got a lot of weight around here.

You can observe with the naked eye that he is most probably kidding you.

Congrats with the new job. Spring is starting soon, and Poland is awesome in spring/summer. Make sure to travel around in Poland. It is a lovely country. Careful on the vodka. Even maths professors will count vodka as one, two, many.

Ok, this is so ridiculous that I know you are essentially trolling. But I love trolls, so I will bite. So, let me get this straight... you are really claiming that the axis around which the earth rotates has moved by 26 degrees from 23.5 to 49.5 degrees. Right? Would you agree that, if this were true, logically the Tropic of Capricorn and the Tropic of Cancer would have to move? In other words, at midsummer, the sun should be exactly straight overhead at a different location now than in the past. And also, that logically the Arctic circle and Antarctic circle would have to move? At midwinter, the sun should just touch the horizon at those lines, but with a changed axis, this would be a different location. That is my "evidence". What is yours?