Recent content by brainpushups

  1. brainpushups

    Music Esoteric Music Recommendations

    Ah. Thank you for the correction. I was just hastily looking at what I had starred in my library without thinking about what the piece was. Hm. I thought that at least some of Webern's compositions were considered serial. According to wikipedia, most stuff after Op. 16 is. Admittedly...
  2. brainpushups

    Music Esoteric Music Recommendations

    How about Edgard Varese? All his pieces are probably 'esoteric.' Try Ionization or Hyperprism. Tried Serialism? Pretty esoteric. How about Anton Webern's Op. 5. Maybe something more recent. Sonic Youth? The album SYR 6 is cool. Not sure exactly what you mean by 'specialized.'
  3. brainpushups

    Understanding Time Measurement in Physics: Uncertainty and Calculations

    By "the values" do you mean the values of the uncertainty? That is up to you. I expect them to be similar, and perhaps the same, but that doesn't have to be the case. For example, when you measure 0.50 meters and try to drop the object from that height did you do something like support the...
  4. brainpushups

    Understanding Time Measurement in Physics: Uncertainty and Calculations

    This is likely the intention: You need to estimate the uncertainty in height with a reasonable judgement call. How close do you think you were to each precise height you were supposed to drop the object from? I bet you were more careful than 0.1 meter for each height! Use a ruler to help you...
  5. brainpushups

    Direction (bearing) of sunrise/sunset

    You may find this book a worthwhile read. It is written at the undergraduate level. Historical approaches to solving your exact problem are developed throughout the chapters.
  6. brainpushups

    Misc. Looking for help calculating heat transfer for PEX ground loop project

    What about installing an automatic waterer (or several)?
  7. brainpushups

    I Sonoluminescence experiment -- help please

    I remember doing this a long time ago in school and being frustrated by it. Turned out that we did it correctly but we couldn't see it by looking at it directly - we had to use peripheral vision. You could try that, or try taking a long exposure photograph if possible.
  8. brainpushups

    History Perspective Art of the Ancients

    Here's a few guesses - It was an aesthetic or stylistic choice not to have or want paintings to be as realistic as sculpture - Surprising as it may seem since the ray model of light was understood, maybe no one had yet applied it to artwork. Heck, it wasn't until Brunelleschi published his book...
  9. brainpushups

    I Error Propagation in Measurements

    Three options to consider: 1) Simply evaluate your function using measurements that result in the highest and lowest possible values, in this case calculate area given by the maximum probable measurements and the minimum probable measurements. The difference in these values will be roughly...
  10. brainpushups

    I Why does Kepler's Third Law exist?

    @Martyn Arthur, if you can find access to, or purchase for yourself, the book Physics, The Human Adventure by Horton and Brush you'll find a nice discussion of Newton's synthesis of Kepler's laws that uses only algebra (but only addresses circular orbits) in Chapter 11. Further, the discussion...
  11. brainpushups

    B This rocket physics problem seems unrealistic

    In case it's useful, you can get engine data here: https://www.thrustcurve.org/
  12. brainpushups

    B Question about Stereo Sound while listening to a Song by the Beatles

    Instruments and vocals are recorded to different tracks that can be panned left or right. Sometimes the pan is subtle and other times it can be panned completely to one side, or even changed to give a sort of 'dizzying' effect.
  13. brainpushups

    B Where Can I Find Accurate Planetary Event Data for an Astronomy Course?

    Well the ephemerides (had to look up that plural!) that I've looked at don't include quadrature which was surprising. I don't think I'm going to spend money to get data for this one assignment, but I did find a Stellarium script that can toggle this information. For anyone that this may help...
  14. brainpushups

    B Where Can I Find Accurate Planetary Event Data for an Astronomy Course?

    ...is definitely the keyword search that I needed. Thanks!
  15. brainpushups

    B Where Can I Find Accurate Planetary Event Data for an Astronomy Course?

    Hi everyone, I'm looking for a database of planetary events similar to this resource but that has a longer span of time that can be accessed (the site goes back to 2009). I haven't had success in my google searches. Does anybody know where I can find this information? In particular I am...
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