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swansont

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swansont last won the day on April 7

swansont had the most liked content!

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7547 Glorious Leader

About swansont

  • Rank
    Evil Liar (or so I'm told)
  • Birthday May 12

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  • Website URL
    http://home.netcom.com/~swansont

Profile Information

  • Location
    Washington DC region
  • Interests
    Geocaching, cartooning
  • College Major/Degree
    PhD Atomic Physics Oregon State University
  • Favorite Area of Science
    Physics
  • Occupation
    Physicist

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  1. Really? Provide a link to the post. No, I didn’t say it was obvious. I said it would be unsurprising.
  2. Since time dilation and deflection of light are both effects that derive from GR, it seems unsurprising that they would be correlated. Effects based on time dilation being the cause, and gravity as refraction. No, you don’t get a new thread.
  3. ! Moderator Note Merged with existing thread
  4. ! Moderator Note You posted this in the evolution section, so leave religion out of it. This goes for all participants.
  5. Boiling does not produce energy. Liquids will boil at low pressure if they possess enough energy to change phase at the temperature they have. e.g. at 0.5 atmospheres, water boils at ~80ºC. At 0.25 atm, it's about 60 ºC. Keep getting lower and it will boil at room temperature. What is a hydrogen-powered steam engine? Are you boiling hydrogen, or making steam?
  6. Prof Reza Sanaye has been suspended for repeated thread hijacks and instances of arguing in bad faith. (we have a low tolerance for appeal to conspiracy, among other things)
  7. The thing is, being on twitter, soundbites are kind of necessary, and it's easy to read too much into a tweet where someone is trying to be pithy. Steak-Umm wasn't wrong, but it's arguable what "it" encompasses. The process of science, or the knowledge it uncovers? And are you picking nits when the parenthetical "all science is subject to revision if new information is uncovered" isn't included, because perhaps that was meant to be understood? So yeah, it could have been worded better, but then it wouldn't flow as well. "The good thing about Science is that the truth of the informati
  8. An ion lifter as described doesn't work in outer space; you need to ionize air molecules for them to work. But you are correct, it wouldn't be collisions that create the thrust, but the reaction from the motion of the ions you have created.
  9. I don't disagree, but the question was about why things are the way they are, not how things should be. (and there are governments that do something about this) This could easily apply to real estate that is not being offered to people who are just getting by. My apartment would probably cost half as much if I lived another hour outside of the city.
  10. The thing is, if you live in a town or city, you probably don't have a job farming. Those people live on the farm. It's not high-density labor employment (you were asked for numbers. Where are they?) Besides fishing and farming and a couple of stores to supply them with what they need, what else would attract people to work there? (You could be a novelist and live in Cabot Cove, because you can do that anywhere, but personally I'd keep away from a place like that because of all the murders) If you attract a bunch of other businesses to the town, employing a lot of people, then it's not a
  11. From what I've read the power requirement is tens of watts (i.e. several milliamps at tens of kV) for the basic lifter, which isn't very massive, but you need to lift a payload to carry the power supply. This paper mentions a lift of less than 5N/m^2, and a maximum efficiency of ~70 N/kW (and they mention getting higher geometrical lift at the expense of a lower electrical efficiency) https://aip.scitation.org/doi/10.1063/1.4890353 So it's quite likely that nobody has built a lifter that can lift its own power supply for any appreciable length of time. You can characterize this
  12. Unfortunately, those of us in the US weren’t able to dismiss him out of hand. And yet his administration’s response seems to not have much to do with the information he got, since he largely ignored it and did almost nothing. Which is one reason I want to know why it would have mattered knowing the details of how the virus originally spread. Would Trump have done a different kind of nothing? Would governors have changed their push to repeatedly reopen too soon? Would they have done something different in avoiding mask mandates? How were these decisions based on the WHO's investigation?
  13. I don’t see an analogy in the post, and no, “employability” does not reflect poorly on the discipline. Colleges/universities are not vocational schools (can you get a job doing e.g. English Literature or Art History? Are there a lot of professional philosophers out there, just philosophizing?), and employability is impacted by supply and demand, among other factors.
  14. I didn’t ask you anything about the WHO, so it’s ludicrous to claim that this is an answer to my question.
  15. That does not follow. Costs are different. Math matters. You’re basically saying a burger that costs $5.66 vs $6.37 isn’t a factor in turning a profit. (cost of a Big Mac in Sweden vs USA) https://www.statista.com/statistics/274326/big-mac-index-global-prices-for-a-big-mac/
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