RiceAWay

Exactly how large do you believe that populations are going to grow? Already the first world is below replacement values of births. The second world is near replacement and only the third world has vastly greater reproduction than replacement but at the same time they have much shorter lifespans and a large percentage of child mortality, disease and pestilence. Again Star Trek scenarios or those involving video games are extremely unlikely. What do you think the populations of Syria and Iraq are going to look like when this war is over?

I think that the idea of genes acting against or for each other is preposterous. Since half of all genes are recessive and in the case of dominant genes there is only a chance that they'll be expressed because of entirely different genes interfering with this you could hardly say that gene's tend to support themselves. This is the reason why for any acre of land you can find subspecies of insect unique to that acre. The more advanced a liteform is the more likelihood that Darwinian evolution is likely to be the controlling factor. Likewise the smaller the lifeform the DISTANCE and travel time has an effect.

The warming started circa 1886 - long before man had the capacity to effect the climate. What's more, the heat characteristics of CO2, 0.04% atmosphere, is almost identical to O2 at 21%. If you look at the spectrum absorption of CO2 you can see that it is almost perfectly between the emission spectrum of the Sun and the radiation spectrum of the Earth. In other words it neither absorbs as much heat as O2 but it receives a great deal less to begin with. All of the charts showing the effects of O2 and CO2 have been massively out of scale. And neither gas is of much importance. Earth is a water planet. 70% of the surface of the Earth is made up of liquid water or ice. Another 4% composes the atmosphere in the form of gas or water droplets. And this absorbs virtually the entire spectrum of emission of the Sun. There are but two manners in which the Sun's emissions are lost. The major manner is the clouds which reflect the greater part, And the blue spectrum line. This is why blue is the color of the Earth from space. Warm periods are recorded in several manners including written histories and geological evidence. We know of the Mycenaean, the Roman, the Medieval and our present period. (Roughly every thousand years) They appear to be connected to solar cycles and the orbital cycles caused by the positions of the Earth, the Moon. Mars, Jupiter and to some extent Saturn (Milankovitch cycles). There is also a direct connection to atmospheric humidity. We have watched as 0,01% of one minor component of the atmosphere has been claimed to have an effect on climate entirely out of proportion to the rest of this planet Earth. It could be noted that the atmosphere is an extremely large place and the growth and diminishment of humidity is likely the major component in climate change that would more accurately be described as situation normal. And that is most strongly connect to the Milankovitch cycles. In place of science we have entire portions of the science population inventing improbable scenarios because scientists have to eat too. And the government in yet another grasp for power would only offer grants to studies that are presented as proving man-made climate change. This has engendered a large shift in the non-scientific part of this population to distrust science. Do not cut your own throat.

This is the same category as https://www.kickstarter.com/projects/276738145/foldscope-the-origami-paper-microscope The objective of these sorts of tools is to bring affordable diagnosis instruments to the third world.

The numbers of prisoners in Federal Prisons are relatively small through pinning down the exact amount is difficult. Though it appears to be about 10% of the numbers of state, local and juvenile prisoners held in states. Privatization of Federal Prisons is probably a good idea though one has to question about states trying to save money and in the process losing view of the fact that prisoners are better off being rehabilitated. Most of these people under the Obama regime could never find another job since they had a record no matter that they had rehabilitated themselves.

Chinagate and the Russian uranium deal was reported EVEN by the Washington Post and the New York Times. That the pay-for-play was clearly visible in these cases as in the Benghazi case SHOULD have been decided on by a court and NOT a partisan government.

I grew up in Oakland where the bus system was private and the blacks had to sit in the back of the bus. But this wasn't so much overt racism as standard practice. As a little kid all of the seats in the "white" section would be filled and if I tried to sit in the back of the bus the blacks would yell at me to get out of THEIR section. And at the same time I watched a tired black lady get on the bus and just couldn't face weaving her way through to the back of the bus and see white men get up and offer her their seats and themselves stand. I saw this sort of thing often enough to know that there was little to no real racism though to a black it would most assuredly seem that way after all of the personal insults they had to emdure with standard practice or overt racism. If you saw that rather good movie "Hidden Figures" they showed one of the black ladies having to run across NASA's Houston campus to use the "black" restrooms. When that was brought to the actual attention of management he took a crowbar and tore down the sign. He said EVERYONE uses the toilets. Again that would have looked racist to these black ladies even though it wasn't. It was just the way things had always been done. The dumb white script writer implied that the project manager was racist because he didn't give the black woman math genius credit for her work and instead put his own name on it. What wasn't said because the writer didn't understand it was that he was the team leader and took credit for everyone's work white OR black. Hell, I was instrumental in completing so many projects I can't count them and not ONE time did I ever receive credit for it. On the project where the project head won a Nobel Prize as soon as the project was finished I was laid off as was my partner, one Dr. Michael McCown. We weren't necessary and were an embarrassment to the rest because we completed what was supposed to be a 100 million dollar project for less than 10. So what? There were many more bridges to cross. As for racism? Remember that the south seceded from the Union because they were being heavily taxed for farm products which had little effect on the industrialized north. But the Army of the Union fought to free the slaves since this was being shouted from every pulpit in the north. And in this war to free the slaves 660,000 almost entirely white men gave their lives for destroying the wicked act of slavery forever. I heard that from Dr. Martin Luther King but not from today's black leaders.

I think that you're correct but you have to have ethical, moral people making these decisions. Did you note that the Democrats attacked the Russians for "attempting to throw the American election process" DESPITE Wikileaks saying that it wasn't the Russians but an insider? These Democrats wanted a war so badly that they would invent a purpose for one. As for Russia hacking the US businesses and government where ever possible. The US has been hacking every single country friend or foe as they gained use of the Internet. How DARE anyone in this country suggest that we shouldn't have to take the same precautions against this sort of thing that we've forced on everyone else? Bush started and Obama doubled down on tapping every single communications source in this country and the entire world until Citizens United took Obama all the way the Supreme Court who found the government's actions to be unconstitutional for US citizens and requiring a court order in every single case. Yes the world can be a dangerous place. We inserted viruses into the centrifuges of Iran and North Korea to cause them to break down and slow the their production of nuclear weapons. We discovered that Obama used every office of the US government to assault political opposition. And we must always remember that every war since WW I was started with Democrat control unless you count the response of the US to 9/11 which EVERY party leader approved. Whenever you hear a politician beating a war drum you have to pay attention. Eisenhower warned us in the 50's that we HAD to watch the Military/Industrial complex and that seems to have slipped off of the radar.

C is usually only good for limited embedded systems because as you say - you can't write your problem in people language but in CPU language. Now that comes naturally to me but not to most people. But you also have to remember that any program that is going to be on-line has a REAL problem with upper level languages. These languages all depend on using groups of preprogrammed lower level languages that are then combined. So you can never write a program that is truly secure since the interconnecting code and the generalizing codes leave gaping holes in the security that are almost impossible to guard.

In order for it to produce energy it has to have self sustaining reactions. And that will not happen with any known containment chamber. The ONLY containment for fusion reactions is gravity.

Three large epidemiologic studies have examined the possible association between cell phone use and cancer: Interphone, a case-control study; the Danish Study, a cohort study; and the Million Women Study, another cohort study. All of these appeared to support the theoretical findings that there is no connection between radiofrequency exposure and cancer.

The resistance of the separate layers depends on both the thickness of the layer and the resistance per mm. I just finished a project a couple of years ago that was somewhat similar. Aside from the resistance you have all sorts of leakages - how do you measure the resistance without a current? And then how do you generate a current that isn't grounded through several pathways? It is extremely doubtful that soil has a resistance the is the same through every pathway that the current could travel and so you cannot guarantee the resistance pathway and hence a uniform resistance. Also water content drastically changes the resistance in some types of soil and not others.

High end bicycle frames and forks are seldom allowed enough exposure to UV and they are constructed so that they do not flex. So plainly this is not the problem. A couple of manufacturers have insisted that the MAXIMUM amount of "safe" time that these frames and forks can be trusted is two years. Now from experience I know that this is more like 15 years but these manufacturers are protecting themselves from lawsuits. However, there have been these failures that suggest that what is going on is that the bonding of the resin to the reinforcing is changing over time. I can't find it now but I did read an study that suggested that cross bonding continued over time changing the nature of the resin.

California requires properly installed P traps in all new construction and only allow S traps in old pre-standard days.

It really doesn't matter whether this posting was made 20 years ago or now. Students looking for answers to simple questions get very little from your definition of space/time and relativity. No matter HOW CORRECT you are that totally redirected the question. It struck me that you were more interested in showing your own understanding of quantum physics than in a simple question. I think that this is the same argument I've had on some of the other strings here. No matter the width and grasp of your own physics, people that are beginning or even intermediate students aren't helped by throwing advanced knowledge at them. All it does is to confuse the issue.

Although bottle traps are better if you keep them cleaned out (and no one ever does outside of a laboratory) I have never seen one of these in a residence since they are illegal in most areas in residences. Even S traps have been illegal for quite some time and they only allow original installations to remain. P traps are supposed to be the standard.

And there it is again - YOU cannot help ME. You neither know what caused this clog in the first place or how to clear it. You are unaware that many times in plumbing especially in older homes that there will be multiple traps in a line due to home improvements over time. But you are telling me that I misinterpret your comments about how this was in some manner related in any way to physics. Or that physicists most of whom can't even answer basic questions in anatomy would have knowledge of Mr. Stebbins misinterpretations of his observations. Hardware stores make an absolute fortune selling "heavy duty drain cleaner" to people that think that they know more about plumbing than plumbers. By the time they are done they have spent far more than a plumbers call would. Not to mention the degradation of the seals around traps and older style pipes from corrosives. The world around us is not theoretical. And that means that for most of the world's problems you have to approach them from a practical and not a theoretical basis. Not as StringJunky who doesn't seem to understand that this was not any sort of special phenomena but nothing more than the ordinary common clog. I've spent the last 50 years flipping light switches on for PhD's that have replaced a light bulb 5 times and I have come to wonder how they do not understand why the light never comes on.

Interesting note: the rifling imparted to the bullet actually decreases the aerodynamic drag if the bullet. The reason that gunpowder works better than other fuel sources is the speed of the flame front - just below the speed of sound. Otherwise it would explode the barrel. So while the AVAILABLE energy of other fuel sources is much higher, the practical use of it is much worse than gunpowder. As you mention, a bullet also requires a very high density so steel and such things work very poorly beside wearing the barrel out in very short order.

I am not attempting to insult you. I am attempting to show you what disdain you appear to have for people who you believe have a lesser education. LONG before Galileo ocean voyagers found their way around the seas using the stars to navigate by, Ferdinand Magellan found his way around the world 40 years before Galileo was born. Quantum Physics is presently balanced on a hair's breadth of evidence in a universe of perception. We are saying that 80% of the universe is dark matter without the furthest idea what that could be. To add to that we found dark galaxies just a couple of years ago and in a couple of years have identified something like 50 of them. So HOW many are there and how much matter does that make up in the Universe? Should I pretend to have more knowledge than you because I worked high up on teams that gave one man a Nobel Prize and another an Emmy? That I delivered weapons systems to the military that no one else could get to work? That the first job I got out of the service was in high energy nuclear research? Science almost always answers questions that have already been completed by others. In case you missed it the Chinese invented rockets in the 13th century. Von Braun was an engineer. Stephen Hawkings standard model is now toast. My opinion is that control fusion ain't going to happen. Drug development is now so staggeringly expensive that each new drug will cost an order of magnitude more than the last. At what point does it become economically unfeasible to pursue? Knowledge in an of itself is nothing more than a game of statistical probability. At some point there is not enough knowledge in the universe about the universe. Are you going to spend your life working on something to discover it doesn't work the way you thought it does and end up talking about AI taking over man-kind or supposing that soon we'll be contacted by space aliens?

Then you wouldn't mind telling us in mathematical formula how these drains clog. You have yet to explain how you have ANY idea of how plumbing works even though Paris was plumbed in the 1700's. Hadrian's wall has guard posts that are outfitted with plumbed toilets. Which quantum physicist do you suppose it took to design those?

Why you know - I didn't know that Benjamin Franklin was a quantum physicist. I can't think of a single improvement in the art of electronic engineering due to any of the wild guesses of quantum physics beyond the existence of the electron. As for your other ridiculous statement - prove it. While the speeds of atoms or subatomic particles accelerating into a black hole may approach the speed of light that is theoretical since the only proof we have of the existence of black holes is conjecture due to hypothetical gravity fields. And due to the relationship of mass it would be the subatomic particles going near the speed of light in relationship to the rest of the universe and not us to them. And this is the way I see it as well. Though you must admit that Dr. Hawkings is rather up a tree seeing his life's work go up in smoke with the discovery of particles that do not fit his standard models. Where ever did you get that idea? Neal's Bohr is given the honor of really being the first quantum physicist (though others are often given credit). But we did not need ANY knowledge of the fact that there were electrons to use electricity. Certainly Edison used cut and try. Nikola Tesla was an engineer and the modern world turns arounds his inventions. While William Shockley invented the transistor that had absolutely NOTHING to do with the subsequent growth of IC's. That was a logical extension of Shockley's invention and the transistor could just as well come from some chemist somewhere playing with methods to identify materials. We need not know that electrons protons or neutrons exist until the Manhattan Project. Do NOT give excessive credit to any physicist anywhere when we know that most of this world's present condition is from people that had little to no idea of what they were doing. Physicists EXPLAINED them afterwards.

Since the material you are using is composed mostly of noble metals the separations of the individual components is rather difficult. Sterling is some 92%+ pure and the remainder can be any number of components. Refining gold is usually done with very carefully temperature controlled ovens that allow you to pick off the individual components at their melting temperatures. The problem is that copper is the most common impurity in gold and their melting points are within just a few degrees. You could use electrolysis to extract the copper but it is likely that the levels of impurities in jewelry grade gold and silver are so low that it would be difficult using any of the readily available methods. There are methods that use strong acids but I doubt that a home chemist could refine the metals much beyond jewelry grade metal.

Actually you totally buried the question. Exactly where did our original poster ask about vector analysis or centripetal force? His question assumed that mass was a part of the equation that he was not interested in.

Actually he said that he was about to call his landlord but hopefully it would be the same thing. Plumbers are MORE than adequately educated to explain how plumbing works despite your disrespect for them.

It is important that you should realize that these bearings were installed at or near the same temperature. Some have the aluminum casing heated a bit to ease installation. They are generally press fit tight enough to prevent rotation of the outer bearing race. But as you can see from your listing that the actual difference in expansion between the two metals on a 3" bearing is not worth discussing. Acme is no doubt correct.