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  1. russ_watters

    What's the point of having a dress code stricter than business casual?

    Fair enough. I would consider that just meeting an expectation ("good faith" I see as being above and beyond expectations/requirements), but I see your point. Agreed...I guess that's what you meant by being less than "content". I was connecting the word "content" to the action, not the...
  2. russ_watters

    What's the point of having a dress code stricter than business casual?

    These two: 1. "A gesture of good faith seemed to backfire...." 2. "...it didn't sound like everybody was content to just notify the manager and go about their business." I don't know what "gesture of good faith" you are referring to and I don't know what you think "everybody" wanted to do...
  3. russ_watters

    What's the point of having a dress code stricter than business casual?

    Yeah, I guess I'm not following at all - I don't understand how either of those points apply. Let me switch it up a bit. European countries also tend to have....different....standards of hygiene from the USA, and this is also a social convention that isn't necessarily clearly spelled-out in...
  4. russ_watters

    What's the point of having a dress code stricter than business casual?

    Oh....ok, well I thought we at least agreed that fashion and dress codes/standards/conventions are pretty much always arbitrary except in the case of safety. So I'm still not really clear on what would be inconsiderate about making someone aware of even an unwritten convention. Heck, from...
  5. russ_watters

    B Radon testing my first basement (already has a mitigation system)

    Yore welcome. Yes, that should reduce radon levels; more due to the finishing of the basement than the HVAC; if you seal the floor it will help stop radon from percolating up. Either way, abatement systems tend to be very effective if properly implemented. How old is the home?
  6. russ_watters

    Fusion aerospace propulsion systems for the near future

    I'm not sure if you recognize just how little time such an engine would function for a rocket. Unless the ascent profile were altered to try to maximize its use (without tearing apart the rocket), a rocket would spend maybe a minute - the second minute - of a 9 minute ascent in an envelope...
  7. russ_watters

    B What is the black that we see in the night sky?

    Not exactly. All of the objects we see in space are too small to be seen with the naked eye except two or three. Everything else we see as just points of light. So all of these other objects become invisible to the naked eye when they are so far away that they become too dim to see.
  8. russ_watters

    B Radon testing my first basement (already has a mitigation system)

    I'm a homeowner in a radon area, and took a continuing education course in it... Just follow the directions/guidance you get back. Radon is a problem in the basement because of extreme stagnation of air. Usually a main floor isn't going to have this problem. Plus the radon comes from the...
  9. russ_watters

    What's the point of having a dress code stricter than business casual?

    I'm having trouble parsing this, but maybe you misunderstood what you were reading; by not being too specific, the manager was speaking with tact.
  10. russ_watters

    What's the point of having a dress code stricter than business casual?

    Am from Philadelphia and have clients on the West Coast; can confirm.
  11. russ_watters

    Fusion aerospace propulsion systems for the near future

    IMO, air-breathing engines are a non-starter because of their extremely limited domain of applicability. Rockets just aren't in enough air for long enough for them to be useful.
  12. russ_watters

    Ethical Discussion -- Engineering used to create innovation versus destruction

    I feel like there are two separate contexts to this question: 1. Basic professional conduct. 2. Ethics in terms of the project goals. I feel like the OP is mostly interested in #2, but most people are answering #1. I think for engineers, #2 is pretty straightforward, though; if you are a...
  13. russ_watters

    B Momentum vs Kinetic Energy

    To me, these questions have simple but not particularly useful answers: 1. Probably yes. 2. Yes; both. The problem here in my opinion is that "results of collisions" doesn't mean anything. What results? Most often for simple physics problems, the "results" are momentum and kinetic energy...
  14. russ_watters

    B Authorities in science

    They weed out stuff that contains flaws they can detect, but don't interpret that to mean the other side of the coin, that anything published is claimed by the journal to be correct. That would be inherently impossible, and undesirable. If that's the type of example driving your perception...
  15. russ_watters

    B Authorities in science

    I don't think a textbook and a journal are at all similar in that way. A textbook has a writer and a purpose of conveying the current state of knowledge, and if it includes the very edge of that knowledge it should necessarily convey an equivocal tone. The writer is/should be an Authority...
  16. russ_watters

    What's the point of having a dress code stricter than business casual?

    This has been my experience/practice as well (industry events). Incidentally, I use similar criteria for speeding.
  17. russ_watters

    What's the point of having a dress code stricter than business casual?

    Yes, but not because he wasn't appropriately dressed.
  18. russ_watters

    Thoughts on Undergraduate Engineering Research

    An example would still help. Context may point to the answer. Here you said "academic job", which combined with "undergrad engineering research" sounds like an oxymoron. I initially thought you were referring to the name of a course. The word "research" has two related meanings. One is a...
  19. russ_watters

    I How close do stars get?

    Have we observed stars that were not gravitationally bound collide? It must be an extremely rare thing to observe. Still, this violates the OP's criteria, so while I'd be interested to know, it doesn't answer the question.
  20. russ_watters

    I How close do stars get?

    The OP isn't asking about theory, he's asking about reality. Again, reading between the lines (I shouldn't have to), the answer I'm seeing is "arbitrarily close to zero". So, how close have we observed in reality? I suspect the answer due to the timing issue is not very close at all.
  21. russ_watters

    Thoughts on Undergraduate Engineering Research

    Where did you see the term used and what description was given there?
  22. russ_watters

    I How close do stars get?

    With the exception one little part, they aren't really being compared, they are simultaneous but separate criteria. Reading between the lines, the answer would be there is no limit. A follow up might be; what has been observed? The difficulty is time: gravitational binding is a long term...
  23. russ_watters

    What's the point of having a dress code stricter than business casual?

    "The theater" is a reference to a live show, a la Broadway.
  24. russ_watters

    What's the point of having a dress code stricter than business casual?

    The answer hasn't changed from what it has always been (it's just been de-prioritized): dress to impress. That would depend on the conference, but the organizers of the conference are no different from the owners of a company: they have a reputation to protect/project that depends on the...
  25. russ_watters

    I Static friction's role in walking

    There's two friction forces: the floor applies a friction force to your foot and your foot applies a friction force to the floor. These forces do not cancel out because they are acting on different objects and they do not tell you if your foot moves because there are other forces being applied...
  26. russ_watters

    I Static friction's role in walking

    This sentence isn't grammatically correct, and that makes it hard to answer. Can you try again? To repeat previous answers, though, yes the floor pushing on your foot and your foot on the floor form a Newton's 3rd Law pair. Friction. I guess, but why muddy the water? Usually we keep the...
  27. russ_watters

    I Simple problem for experts... (work done lifting weights at the Gym)

    ... We get questions about exercise energy use a lot, but I don't think they usually complete the thought or go far enough. What I think would be useful to know is just how efficient the human body is. Here's a method for figuring it out: Energy burn rate is roughly proportional to heart rate...
  28. russ_watters

    I Simple problem for experts... (work done lifting weights at the Gym)

    The force is equal to the weight on the way up and the way down. But the work on the way down is negative; the body isn't outputting energy, it is absorbing energy. If you want power instead of work or energy, you divide by time.
  29. russ_watters

    I Simple problem for experts... (work done lifting weights at the Gym)

    Work is force times distance. That's it. Assuming a person doesn't jerk the weight so hard that he needs an opposite force to stop it you can assume the force equals the weight. So 50x9.8x.4=196J per lift. Note, that's not the energy used(input) it is the energy output.
  30. russ_watters

    Stargazing Solar imaging and techniques

    Yes, that is a technique that is used. Not sure if by amateurs.
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