Jump to content


Senior Members
  • Posts

  • Joined

  • Last visited

  • Days Won


Everything posted by OldChemE

  1. 13, not 2-- the sums of odd numbers are along the lines, so the center number should be the sums of the diagonally opposite odd numbers. In both diagonal directions the odd numbers are 9, 3 and 1 which add to 13. That is the odd numbers in 613 add to the odds in 492, and the odds in 389 add to the odds in 841.
  2. Most all beer is wonderful. To really enjoy the spectrum you need to compare. Years ago I lived in Switzerland and traveled in Europe quite a bit. While my family collected souveniers I collected local beer (never took any home). Every little town we stopped in I would have beer with my lunch. I would always ask our server if there was a popular local beer-- and if so I would order that one. The only beer I ever found that was a little unsettling was in a fishing village in Norway. The local fisherman's favorite was distinctly fishy tasting. In the town we lived in there was a local brewery that would deliver three cases of beer to me whenever I ordered: 1 case of Sternbrau, one case of Drei Konigs, and one case of Hexenbrau (in order, pale, dark, and strongly dark-- higher alcohol content). I kept the cases un-refrigerated in the garage and would pick one out each day when I got home from work. Beer heaven!
  3. If you take a narrow view-- as in which field of engineering designs which products, there could be an excess in some fields now and then. However, one of the value-added aspects of engineering is that you learn to approach problems and find solutions. It can demand considerable creativity. The engineers with creativity and the necessary education in the science and math needed to apply the creativity are very rarely without well-paying and fun work. Of course, Engineering is not the only field that benefits from creativity-- but its creativity coupled with knowledge of science and math that makes fields like engineering stay in demand.
  4. Also matrix solutions lend themselves readily to computerized solution systems. Being a math teacher, however, I'm more comfortable with non-matrix approaches.
  5. I think it has a lot to do with the times we live in. People don't mildly disagree any more. Just like in politics-- there is no middle ground. So instead of someone wondering whether it it OK for you to drink coffee while driving (which I also do regularly) they go overboard and become incensed over a trifle.
  6. Note the words "entire sequence of the pi number." This demonstrates the statement is false, since the Bible is finite and the number of digits in pi is not.
  7. Don't confuse money with currency. Sounds silly-- but to give you an example, my income and expenses balance out at around $5000 per month-- but I only take about $40 per week of that in actual currency (cash). The rest is all electronic deposits and debits-- no cash ever changes hands. Thus, the supply of currency does not have to match the amount of money present in a community.
  8. Depends on what you mean by 'rational.' One reason for religion: as children, we depend on our parents for guidance and protection, to feed us, care for us and shield us from the hard parts of life. Some people never get over that need for someone above them to provide that care and guidance-- so they turn to religion. Personally, I don't see the need, but I believe there are those who do.
  9. it's also worth noting that Amazon fills a niche that many stores don't. In our small town we have three grocery stores, one hardware, one ranch store, and three auto parts stores, and a number of tiny specialty stores. The small stores cannot viably carry a large inventory of less used items. There's just lots of stuff that we can only get by dealing with an internet connected supplier, such as Amazon. I gladly go to the local stores when I can quickly get what I want, but do a lot of online shopping for the rest.
  10. They should have the same rights, since they are also humans. DNA studies tell us that neanderthal genes are present in much of society (I myself have 2.6% neanderthal genes). This clearly indicates that neanderthals were able to successfully mate with other early ancestors of the rest of humans-- by definition this means they are of the same species, but maybe a subgroup.
  11. or, if you don't want to go the mass spectrometer route basic inorganic chemistry works too-- pick up any good college level text on the subject and you will find lots of help. Be warned, however, inorganic chemistry is fun but it is also the hard way-- that's why mass spectrometers are used so much these days.
  12. All you have to do to stop the property damage is get smart-- The volcano is not unknown or a mystery-- the mystery is why people insist on developing property in the path of the volcano.
  13. Mine should be obvious-- I'm an Old Chemical Engineer (and Nuclear Engineer, and Former Square Dance caller, and briefly a teacher)-- and yes that's me in the avatar.
  14. Many years ago my university room mate, A graduate student in Chemistry, did his own research and claimed that the principle cause of a hangover was (a) dehydration and (b) the ketones and aldehydes that were present as side products of fermentation. To test his theory, we drank beverages using pure lab grade alcohol. It seemed to work. I never did any other research, but usually just woke up feeling thirsty and tired, but not hung over. I'm now too old for this sort of serious research, but heartily recommend it to hardier souls.
  15. Probably too unscientific for this forum, but I long pondered the meaning of life and decided, at least for me, "What is the meaning of life?" was the wrong question. I don't like being alone. The question for me was "Who is the meaning of life." Wife, family, friends
  16. If you think about it a little it makes good sense. Helium and Argon are Noble gasses. They have 8 electrons in their valence shell. They do not form ions particularly well and are largely non-reactive. You need ions in order to have significant electrical conductivity. Noble gasses don't conduct well.
  17. I think the OP question is answered, but would point out that DNR decisions are not the only way government guidelines bring life to an end on a cost-benefit basis. A good friend of mine was diagnosed with operable prostate cancer at the age of 79. His doctor and insurance company refused to recommend or support prostate surgery. The basis given was that, according to US Government and Medicare protocols, a person of his age did not need the surgery as he would likely not die of the cancer anyway. This was, in effect, a cost benefit analysis. He was a healthy alert man of good mind. He could not afford the surgery on his own. Untreated, the cancer spread outside the prostate gland and killed him in 4 months.
  18. Culture is most of the above, and maybe more. But i particularly agree that Language goes a long way to define culture. I lived and worked 6 years in the 'German' speaking part of Switzerland, and had to learn to gt along with the local dialect of German in order to do my job well. The biggest benefit to learning parts of the local language was that I began to understand the local jokes. So-- I became convinced that if you want to understand a culture you must learn enough language to understand the jokes. Culturally specific humor goes a long way toward encapsulating the essence of a culture.
  19. Check out letters that are on opposite sides of a standard keyboard. when a touch-typist has to type one letter with the left hand and the next with the right (or vice versa) typos arise if the fingers of the two hands are not equal in speed of movement. For example, I have a tendency with words that end in 'tion' of typing 'iton' because my right hand seems to be a little faster (I am right handed). Similarly, I tend to type 'hte' instead of 'the' again because I seem to reach the letter h with my right hand a split-second faster than I can hit the 't' key with my left. I haven't done any research, so I don't know if this is just because I am right handed, or if it is just an age thing-- my left slowing down a little, or some other factor.
  20. Really?? https://www.sciencedaily.com/releases/2017/04/170411085742.htm Cross-cultural study strengthens link between media violence, aggressive behavior Date: April 11, 2017 Source: Iowa State University Summary: Media violence affects aggressive behavior, compelling evidence demonstrates. This first-of-its-kind study, conducted in seven different countries, confirms six decades of research showing the effect is the same, regardless of culture.
  21. While I am coming very, very late to this thread, I notice the discussion bouncing back and forth on the question of what might be different about the US relative to other countries. How about entertainment?? I haven't researched in detail, but it seems to me that gun toting and shooting are high on the list of prominent TV programs and movies. Much more blood and gore than I recall from my youth. Video games, as well, come to mind (such as "Call of Duty"). Could it be that we have an increasing gun problem in the US also because we are making killing less upsetting? Could it be that we are becoming desensitized to the blood, gore and horror of taking lives? Could this be leading to a change in attitude of people with borderline attitudes being more willing to kill for the fun of it?
  22. and in addition to much already said, neutrons help to stabilize the nucleus by spreading out the repulsive effect of the charge on the protons. As you add neutrons, stability improves to a point, but with too many neutrons the dynamics of the nucleus (the parts don't stand still) reach a point where stability declines again. This is why you see a limited range of viable isotopes for elements.
  23. I came out of retirement to teach. Do I want to be armed? Absolutely no. Truth is, I have a gun permit and don't carry one anyway. I think the principal of our school has about the best advice of any. He told all of us that if we hear gunshots in the school we should do two things: (1) Pile everything we can think of in front of the classroom door and (2) toss the kids out the window and tell them to run. Above all-- he told us not to have the kids try to shelter under desks or wait for "proper authorities" to take action.
  24. I'm going to take a little bit of a contrarian position on the OP. Scientific equations do not have to be dimensionaly consistent, per se. They relate terms that the user has to make dimensionally consistent. For example, F = ma. If the user is calculating in metric units they have use newtons, kg and acceleration in m/sec^2. The user has to make the correct choices in order to assure dimensional consistency, and they have to know the definition of the Newton in order to know this usage is consistent. The same equation could be used in the English system using pounds of force, mass in pounds mass and acceleration in ft/sec^2-- but the user will have to introduce conversion factors to attain dimensional consistency.
  25. I've always considered myself to be a Conservative. I'm amazed at how many of the items on the list I agree with.
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.