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About OldChemE

  • Rank
  • Birthday 07/13/1946

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  • Gender
  • Location
    High desert Nevada USA
  • Interests
    All things science, golf, tutoring grandchildren, developing cartridge designs for old rifles (experimenting with various types of gun powder, various bullet designs, various ballistic results, target shooting), working with my hands (wood/metal).
  • College Major/Degree
    BsChe, MSNuclear
  • Favorite Area of Science
    Physical Sciences
  • Biography
    38 years engineering, 10 years teaching (Math & Science)
  • Occupation

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  1. US Government Shuts Down... Again

    the operative word in the OP is "again" I don't think this is nearly the issue many others see it as. Shutting down the government has become a standard strategy for both the current dominant political parties. It too shall pass. Although I have no evidence, I suspect that the main reason why the congressional budgeting and funding process has remained structured the way it is is because both parties Like having this ability for political grandstanding.
  2. Are memorys physical?

    Interesting question. If, as I understand the current state of brain science, all consciousness and memories are the result of connection between brain cells, it would seem that there is nothing that could be passed on to another brain. That is, to pass anything along it would be necessary to structure the new brain to be identical to the old brain (at least as regards individual cells, connections and presumably other details). Assuming that the person you want to pass the information to already has a structured brain, there is nothing you could pass on without restructuring them (as in erasing a hard drive and copying new data-- but in terms of brain cells and links, not files).
  3. NY files suit against oil companies.

    I agree with the issue of Oil Company responsibility where they have discouraged alternative fuel development-- But I still think NY and others are crazy to launch a lawsuit. They fail to recognize that a huge majority of vehicles currently in service need fossil fuels. For the oil companies to continue to supply that demand they will simply raise prices to cover what they lose in the lawsuit. They will be able to do this because, with our current transportation infrastructure, we cannot afford to regulate them out of business.
  4. Test of an Examiner

    Answers (in question order) are b, a, True, False, False scores (in order ) were 2, 1, 0, 4, 3 Good puzzle-- easy if you set up the possible permutations on a spreadsheet-- but fun.
  5. Vertical Farms: Ethanol Fuel

    Conceptually it seems workable to me. The drawback is that, if I recall correctly, Ethanol provides about 60% as much energy per gallon as regular gasoline, so this solution would increase carbon dioxide buildup in the atmosphere for the same power delivered to the vehicles. Seems like this is going in the wrong direction. I'm not sure of the numbers here, but that's what I would look into.
  6. Missing Number

    missing number is 12 (the rule is that the absolute value of the difference between the first and second number, multiplied by the smaller of the two, equals the third), |15-6| x 6 = 54, |12-10| x 10 = 20, |8-12| x 8 = 32.
  7. Find some decaf that you really like and switch to it, and keep the same hours you used to. I had to do that 30 years ago due to a caffeine allergy that developed in my early 40's. I had headaches for about two weeks, then was OK. Now-- a nice cup of hot coffee (decaf) seems to be just as good a wake-up as caffeine was before.
  8. 3 Choices, pick one:

    I don't like the choices. But.... if a choice had to be made I would go with #2. Choices 1 and 3 are very risky. What if the Alien idea of curing global warming turned earth into an ice-ball? And # 3???? Think of what curing all disease would do to average life expectancy and global overcrowding. Disease can be very bad-- but it is nevertheless an essential element of the balance of nature.
  9. Electoral college (should I stay or should I go?)

    You don't have to get rid of the Electoral College to have popular vote decide the election. Every state has the right to divide its electoral votes any way they wish-- a couple (NH and maybe Maine-- I'm not certain) already divide their electoral votes based on their state's popular vote. The real issue, I believe, is that the Electoral College system gives States a small degree of leverage in national elections, which they would not have if the Electoral College was abolished. For example, with the Electoral College all the votes from New York and California went to Clinton, even though both states has significant votes for Trump. In this election, of course, Clinton would have won if the election was by popular vote, but that kind of situation doesn't happen very often. So, in order to switch to popular vote, the politicians in the big states would have to be willing to risk the loss of leverage. I doubt that's going to happen anytime soon.
  10. How many in bed?

    Love has so many elements (chemical, emotional, etc) that I think it is indeed possible to love more than one person at a time. The tough part is to commit to one person.
  11. I agree with Mathematic. But, if you don't use a matrix use substitution. Solve the top equation for x as a function of y (assuming the variables are labeled x, y and z), the bottom for z as a function of y, then put those two results in the center equation and you will have only one variable (y). The numbers look like they will be messy, but it would work.
  12. Physics Lab Newtons 2nd Law

    If your calculator is giving you an error, check settings. Most good calculators can do angles in degrees or radians. If you have it in the wrong mode (radians when you want degrees, or vice versa) it will make results come out wrong.
  13. Axioms, definitions, and 0.999...=1

    Folks This has been a fun discussion. There are a number of threads in different forums (sp?) on the internet where this is debated. But, I think we've beat the subject to my satisfaction, I'll bow out here (not agreeing, but agreeing to disagree)
  14. Axioms, definitions, and 0.999...=1

    While it is a theoretical nit (perhaps), it should be noted that the infinite sum of 9/10 + 9/100 .... does not actually reach 1, it converges toward 1. 9/10 is 9 tenths of the distance on the number line from 0 to 1 9/100 is nine tents of the distance on the number line from 9/10 to 1 Every term in the infinite sum adds to the sum 9/10 of the remaining distance on the number line between its previous term and the total of 1. Because bo term ever adds more than 9/10 of the remaining distance on the number line, we never actually reach 1. This is the situation of the old puzzle about a person who in each unit of time walks exactly half the remaining distance to his/her destination. With each succeeding term we add to the infinite sum we travel 9 tenths of the remaining distance to 1. Again-- it is a Limit, not an equality.
  15. Axioms, definitions, and 0.999...=1

    Let us assume the hypothesis that 0.99.... = 1 Then, by the rules of mathematics, 1-0.99.... = 0, which is a definable number in mathematics. Or, to say it differently, a defined result proper to mathematics. if we subtract 0.9 from 1.0, the result is 0.1, which is 1/10, which is 1/(10)^1 if we subtract 0.99 from 1.00 the result is 0.01, which is 1/(10)^2 Generalizing, 1 - 0.99..... = 1/(10)^Infinity But the result of division by an infinite number is undefinable in mathematics. Therefore, 1 - 0.9999...... produces an undefined result This falsifies the assumption that there is a definable result of zero This falsifies the original hypothesis.