Recent content by JaWiB

  1. J

    Average waveform or calculated values?

    Well, the primary issue is high frequency noise and it's probably due to a large number of things. The signal comes from a lock-in amplifier which already has a low-pass filter. Perhaps it helps if I describe the calculation. The first half of the signal represents a measurement taken under...
  2. J

    Average waveform or calculated values?

    I have an experiment where I calculate a value based on a waveform acquired by a digitizing oscilloscope. Since the signal is very noisy, I need to average the results many times to get a reasonably accurate value for each measured data point. My question is how should I spend the time averaging...
  3. J

    Engineering Green jobs in physics, environmental engineering, other sciences?

    In my opinion, you should focus on figuring out what you like to do. Don't waste your time trying to find the area that can have the biggest impact, because if you hate the work or aren't any good at it, you won't end up doing much good. Have you tried to find a summer research position in...
  4. J

    Tracking Down Out-of-Print Books: Strategies for Researchers

    1992. It's this book: https://www.amazon.com/dp/0125286279/?tag=pfamazon01-20 Apparently there's also one on minority carriers in the same series, but neither of them seem to be in print.
  5. J

    Tracking Down Out-of-Print Books: Strategies for Researchers

    Interesting. Not sure I want to spend hours photocopying it though. Think I'll try the publisher first :)
  6. J

    Tracking Down Out-of-Print Books: Strategies for Researchers

    While reading someone's thesis, I noticed they referenced a certain book constantly throughout, so I checked out a copy using interlibrary loan (our library didn't have it) and found it was incredibly helpful. It described in detail a lot of the theory behind some of the measurements my lab uses...
  7. J

    Tracking Gasoline Usage: A Personal Account of Fuel Consumption and Cost

    My rough estimate is filling up once a month, <$50 per fill, so $600 a year for me. Could have been higher during the summer, so maybe more like $800 maximum. I bike or bus to school, so most of my mileage is longer trips out of town.
  8. J

    ELO chess ranking system applied incorrectly in video games

    I disagree with this. I would say your elo deserved to be in the 1400s-1500s because your team was presumably not as good as the teams you were randomly matched with. Starcraft does this correctly IMO because you have a ranking for every team you play with, as well as a "Random Team" ranking...
  9. J

    Spring constant and length of string. *Need Explanation*

    The spring constant tells you the force exerted by the spring given a certain amount of elongation. It also appears in the equation for potential energy stored in the spring: F = kx U = .5kx^2 Since total energy must be conserved, the gravitational potential energy that the "jumper" has...
  10. J

    Fukushima Debunked: 14,000 Fukushima Deaths in U.S.

    So the decline around 2008 could just as well be due to declining birth rates as declining infant mortality
  11. J

    Fukushima Debunked: 14,000 Fukushima Deaths in U.S.

    Are these figures actually deaths per some number of births, or does birth rate need to be taken into account here?
  12. J

    Are women given preferential treatment in graduate school admissions?

    In practice, you accept all 10 females and none of them decide to go to your university. Why? Because they have better offers elsewhere. I think I have heard that some universities have funding specifically for women (not sure in what form, I suppose some kind of fellowship) which might mean...
  13. J

    Why do people complain about sound on LCD TVs?

    Ah, sorry I misread your initial post. I was kind of thinking that all the LCD's I have seen aren't quite that thin...
Back
Top