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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

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  • 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. I've got degrees in Chemical Engr (B Sc) and Nuclear Science (M) so I will toss in my thoughts. However, you need to realize that I am retired, and entered the Chemical Engineering field 50 years ago. Things do change. The primary benefit of Chemical Engineering when I took my degree was that I had to study both the pure science (mostly chemistry, but also physics) and applications and to some extent project management. This meant my pure science background was somewhat less, but my ability to translate into practical uses was maybe a little stronger. In my case, this gave me a great deal of flexibility to take on different types of engineering as opportunities presented themselves. I was able to work in plant design and construction, project management, synergy projects (taking the outputs from many engineering disciplines and pulling them into a complete package) and even a little mechanical and electrical engineering. In Europe, where I spent 6 years, there is even a Nuclear Power plant that has operated safely for 40 years now whose pressure vessel is held to its foundation by bolts designed by a chemical engineer (me). I can't honestly say if this is typical-- but I have always been glad I chose the engineering route. Good luck!
  2. Good point. Actually, we are thinking along the same lines. By 'take care of the climate' I meant controlling CO2 emissions and such-- what you are calling environment (rightly so), because the environment and climate are simply two aspects of the same system. Studiot - to your question, I have not been able to find any research or data on the effect on areas to the south and east of northern Nevada. I think we can rightly speculate that dropping more water in Northern Nevada should create a water shadow. This could have bad effects. However, with the overall warming we are seeing increased evaporation from the Pacific Ocean. Interestingly enough, we have been seeing what appears to be more frequent cloud cover in our area, both in the winter and spring. Historically, our area of Northern Nevada has been in the rain shadow of the Sierra Mountains. With the increasing north-south amplitude of the jet stream we seem to be getting more moisture passing north of the Sierras, increasing our cloud cover. Thus, it might be that we can continue to take more of that moisture through seeding operations without causing a net deficit to the south. This is, of course, very speculative. Only time will tell. These thoughts are, of course, somewhat contrary to the BBC article. I'm wondering if this is a time lag issue (time from research to publication). Our part of Northern Nevada was in a major drought period up until two years ago. This winter, even the seeding operations I mentioned have not been done as the reservoirs continue to remain in good shape. PS: for those who will ask for evidence I will have to admit this is all so new in our area that I have not seen any proper studies. Its still all presumptive based on personal observations.
  3. Sorry I have been late replying-- I have been away for awhile. That is a very good question for which I do not know the answer. I'll try a little research.
  4. If you take any two objects, keep them carefully insulated, and apply a like electrical charge to both, they will repel each other. But--its not the materials that are repelling each other, but the charges.
  5. Obviously, the best solution is to take care of the climate properly-- but things can be done. For example, here in northern Nevada we had a major reservoir go dry (<5% capacity) a couple of years ago. As a solution a wintertime cloud seeding project was started focused on the mountain systems that feed the local rivers. By cloud seeding at strategic times, the project built the snow pack to 150% of the historic norm, and the spring runoff has refilled the reservoir without any deleterious flooding.
  6. As there are three unknowns and only two equations, there will not be a unique solution-- but rather multiple solutions. Also, obviously, since all three variables are specified to be greater than or equal to zero, the solutions may not be integers.
  7. Just go to the Windows store and download the free "S switch". This immediately shuts off S mode. I did this with my HP laptop with Windows 10 S. You do not need to do anything with other computer system files. Once you do this, which takes all of 5 minutes, you can load any app. I loaded open office, thunderbird, firefox, duckduckgo, VLC media player and lots of other stuff that I prefer.
  8. It is also possible to develop breeder reactors that convert Thorium. This is less elegant, perhaps than plutonium plants, but it has been done commercially. The US Navy nuclear program operated a demonstration plant in the Shippingport power plant something like 50 years ago.
  9. Having served in the Military-- I do think it is an excellent example of Socialism. Much of this thread has focused on the Military with respect to society. I'd like to focus internally. When I was in the Military I did not have to worry about anything external to my life. My job was defined, my location was defined, my pay and benefits were totally beyond my control-- but I was cared for assured of housing, assured of medical treatment, and even life insurance. Society (the Military) took complete care of me from enlistment until discharge.
  10. I'm not the right kind of Engineer for this-- but it does not seem impossible to me at all. Consider a weight hanging from a pivot point in the aircraft. When the aircraft rolls to the left without deviating from its forward path (rotational acceleration only), the weight, responding to gravity, will pivot toward the left of the aircraft. When the aircraft rolls right, the weight will pivot to the right. If this weight was connected to some sort of control cable the action of the weight could be harnessed to counteract the roll. Now, I have not read the book and have no idea if this is what the Wright Brothers did-- but it seems to me the principle might be viable to some extent.
  11. The problem goes beyond simple lies. Prior to the Internet, the principle source of knowledge for people was books. Getting a book published took lots of effort, and the only thing that reached our schools were the textbooks selected by the school system. This was not foolproof-- but it tended to screen out some of the lies and misinformation. Now, anybody can 'publish' any sort of nonsense and reach a large audience. Virtually anyone who wishes some fact was not true can find plenty of support on the internet for their misguided hopes. It's the same as the political situation-- people with politically extreme ideas seem to have no difficulty finding some 'news' source that tells them what they want to believe.
  12. With respect, I think this thread needs to be unified with the thread explaining the difference between correlation and causation.
  13. Better to have the surgery that doesn't do the damage, and not have to wait.
  14. I would start with an average High School Algebra book. Pearson and a number of other textbook publishers make very good ones. They tend to be aimed at a population of students that have a wide range of learning styles, so they have written material, pictures, examples and other such things. Once you know what learning style fits you best you can then move on to more tailored textbooks. There are more modern teaching systems, such as "Eureka Math" but they do not have well-developed reading material and tend to be more narrow in the learning styles they address. I've taught Algebra using the older books and with Eureka Math, but the older books seem to have broader success.
  15. Not as much as in the past. The new robotic surgeries have made remarkable strides in avoiding damage ( as verified by personal experience)
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