Recent content by Nehmo

  1. Nehmo

    News Any of you guys missing an airplane (or three)?

    The articles don't name the owner, but state that it is "known". Why was the owner not named? The story doesn't make sense. Multi-million dollar assets aren't abandoned, and they certainly aren't left without a paper trail to the owner. The article is probably an attempt to sensationalize some...
  2. Nehmo

    News Why Did Turkey Shoot Down a Russian Jet Near the Syria Border?

    I'm just learning about the subject, but it seems at least a few of the Turkish flights have been over mainland Greece,. But in the situation of the Turkish shoot down of the Russian plane (the issue is not one jet or one pilot or a possible 17 second intrusion), the question is more of Which...
  3. Nehmo

    News Why Did Turkey Shoot Down a Russian Jet Near the Syria Border?

    Erdogan, president of Turkey, opposes the Kurds and also opposes Syrian president Assad. He doesn’t like Greece or Russia or Iran, basically all the surrounding countries. He is friendly with the US, NATO, Iraq’s current government, some militant groups in Syria and Iraq, like the Turkmen and...
  4. Nehmo

    Humans Settling on the Moon: What Do You Think?

    There's no point in settling the moon. That's last-century stuff. Nowadays, we can send robots and cameras that are better than people. Come to think of it, we really don't need people on Earth either.
  5. Nehmo

    Static-E Attraction on Knitting Needle

    Teflon and Nylon react differently to being rubbed. Teflon acquires electrons from other materials when rubbed, thus, becoming negatively charged. Nylon gives up electrons to other materials when rubbed, thus, becoming positively charged. The droplets come out of the syringe near the...
  6. Nehmo

    What is significance of torque

    What would be the advantage of defining torque as F*r^2?
  7. Nehmo

    Static-E Attraction on Knitting Needle

    https://www.youtube.com/watch?v=qHrBhgwq__Q&feature=player_detailpage Don Pettit, unfortunately, narrates, but doesn't explain much. The main needle is Teflon and the other needle by the injection of the water droplets (seen near the end of the vid) is Nylon. The site asks about the choice of...
  8. Nehmo

    How to magnetize a concrete wall?

    Rebar is http://www.wichita.gov/NR/rdonlyres/D0D3A2EB-8BC7-49F9-83E3-ED41954AFBCE/0/rebarground.pdf nowadays. Suggestions for what? I don't understand what you are trying to do. You seem intent on finding something confirming concrete can be magnetized by electricity going through it. It can't...
  9. Nehmo

    How to magnetize a concrete wall?

    Is this a theoretical or practical question? In other words, what are you trying to do? Are you considering making a magnetic concrete wall, perhaps? Concrete is a mixture containing what's called an aggregate. You could use pieces of steel for the aggregate, or you could pre-position magnets...
  10. Nehmo

    Displacement of air particles.

    Air, as a gas, will be displaced by the *volume* of a solid, in this case, an organism. And, sure, as the organism increases volume by some means (except consuming air), it will displace more of the gas, which is the air.
  11. Nehmo

    Are there any formulae that involve decibels?

    This is a perfect place to recommend EEVblog #49 - Decibels (dB's) for Engineers - A Tutorial https://www.youtube.com/watch?v=mLMfUi2yVu8
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