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OldChemE last won the day on October 14 2019

OldChemE had the most liked content!

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About OldChemE

  • Rank
  • Birthday 07/13/1946

Profile Information

  • 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) I'm not much of a debate person. I have confidence in myself (worts and all) so I tend to state my position on a topic and move on. Peer approval isn't high on my needs list.
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  1. The original proposition is too poorly defined. Would heart stoppage be bodily death? How long must human consciousness survive to qualify? I had an elderly friend years ago who died at a square dance. His hear stopped while he was talking to friends. He felt his heart stop, got a puzzled look on his face, then then fainted. It certainly appeared that his consciousness survived death by a second or two. But, of course, it depends on how you define "bodily death."
  2. "Back in a time" ? as in ten seconds ago? 😒
  3. Having taught math successfully in Junior High and High school I though I would have a lot of great examples for you-- but on further reflection realized my best ones were not something that could be generalized. I had the greatest success when I could connect the math lesson to the students' experiences. For example, in my rural area the vast majority of the students have experience with guns and many also have reloaders in their families (people who make their own ammunition). When I first tried to teach statistics I got blank looks from many students, So that weekend I took my test equi
  4. Sorry I'm slow replying (away for awhile). Fundamentally, Switzerland went with the nuclear option because they had not significant sources of fossil fuels in the country-- they were importing what they needed. Nuclear gave them a degree of energy independence. That, however, was almost 20 years ago, and I have not kept track of how things may have changed since I left the country to return to the United States.
  5. Its not clear that your original premise is true. While menial jobs in many industries have become automated, many service-oriented jobs have been created. Service jobs also contribute to society and are part of the gross national product.
  6. In comparing Nuclear and renewables there was the historical question of scale (how to generate large amounts of energy in small spaces). At the time (60's-80's) the only good options for large generating capacity were hydro, fossil fuel and nuclear. Nuclear was a good choice because good opportunities for hydro were dwindling and, while it has its own sets of problems, nuclear replaced coal-- a benefit in several ways: reduced acid rain, reduced greenhouse gas emissions, and reduced coal tailings (random radioactivity and other localized pollution). I worked for several years as a technol
  7. I too am somewhat confused--about what you are really asking. maybe you need to explain your question further. But-- starting with what you have.... There are not two input values-- in any given equation the value of x can only be one number at any given time. So, there is really only 1 input. For any given equation there might be more than one value of x that satisfies the equation-- but only one value may be used each time you use the equation. In this instance, if x^2 = x/x = 1, then x = 1
  8. Physics - Principles and Application, Douglas C. Giancoli, ISBN0-13-060620-0. The interesting thing about this book is that it covers the physics behind virtually all branches of Engineering. It is a College level textbook that has the unique feature that is it Algebra based instead of being Calculus based. As a result the examples and problem sets are somewhat more closely aligned with the day-to-day of engineering problems as opposed to more research oriented aspects of physics.
  9. Some thoughts from a Teacher's perspective (mine) 1. High Stakes testing. Definitely should not be used as the primary means of determining what a student knows. Frequent assessments (what we call "formative" assessments) work best. In my experience most good teachers do it that way. However, some high stakes testing is important. If a person does not learn to handle some degree of pressure they are likely destined for job failure. 2. The written word. The ability to read is fundamental to almost all of life. Try using as computer if you cannot read well. It also rel
  10. So, modern science disowns its ancestry for commercial interests-- and ancient science/philosophy did not? I think you ought to do some research on ancient societies and ask yourself how the ancient scientists/philosophers had the time to do what they did without needing to work all the time to support themselves. Think about the role of patrons and rulers. The patrons and rulers saw an advantage, commercial and/or political, in supporting the activities. Lets go waaaay back in the pursuit of science and invention. Had the wheel no commercial value?
  11. If you can find it somewhere, look for a Scientific American article "Traces of a Distant Past" by Gary Stix et al published in the July 2008 issue. It traces out human genetic relationships by changes in DNA and uses a mathematical method of estimating times of the changes based on rates of DNA mutation. It is only a small piece of what you are looking for, but it might prove interesting.
  12. Back to the op-- I don't think he will be able to steal this election. Good thing. As some here may realize I am a political conservative who values honest dealing. I had high hopes for the past four years and it most definitely did not work out.
  13. Many such products offgas to some extent early on life and then the levels go down. Think "New car smell." However, it is short lived. I'm not aware of any studies specifically on the health hazards, but because it is a short lived process (new products) I suspect it is not a hazard. If the process were to continue indefinitely I would expect the records to degrade. I am speculating that it is a short lived process because the new car smell goes away fairly rapidly and also I have vinyl records that are 50+ years old that do not seem to have decayed.
  14. So, acceleration is one example where we see seconds squared, but we are not really squaring a second-- its mathematical language. When we say, for example, that the acceleration is 10 meters per second squared we are really saying that the velocity is increasing by 10 meters per second each second. Mathematically this looks likes we are squaring a second but in reality we are not.
  15. I have to be careful how I say this, but... I do not believe God exists-- but, if a God of unlimited power did exist, could not that God have triggered the existence of the Universe in such a manner that everything we can measure with science remains true? If so, then, while there is no experiment or observation that proves such a God exists, there would also be no experiment or observation to prove such a God does not exist.
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