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russ_watters's Recent Activity

  1. russ_watters replied to the thread Which fan/pipe combination is the most efficient?.

    Do you want the most cooling, least energy use or highest efficiency? They are three different things. ....You'd also need to know the...

    Aug 20, 2018 at 11:17 PM
  2. russ_watters liked JBA's post in the thread Air Displacement Pressure.

    Using my above equation and units, my result for air is: [ATTACH]

    upload_2018-8-20_15-48-41.png Aug 20, 2018 at 5:05 PM
  3. russ_watters liked cosmik debris's post in the thread How common is it for professors to yell at their students?.

    Yes, you are right, bad choice of words. Cheers

    Aug 20, 2018 at 4:59 PM
  4. russ_watters attached a file to the thread I Would going to the Moon delay going to Mars?.

    Can we try to clarify this one a bit please. The previously linked wiki article contains the following graphic: [ATTACH] According to...

    749px-Delta_V_Earth_Moon_Mars.png Aug 20, 2018 at 2:57 PM
  5. russ_watters replied to the thread I Would going to the Moon delay going to Mars?.

    If there are things about being on the moon that are helpful, that is true. The question is whether testing that...

    Aug 20, 2018 at 2:39 PM
  6. russ_watters liked Daniel Sellers's post in the thread I Would going to the Moon delay going to Mars?.

    You have to consider a manned voyage to Mars to be a huge infrastructure task as well. So testing and developing part of that...

    Aug 20, 2018 at 2:36 PM
  7. russ_watters replied to the thread I Would going to the Moon delay going to Mars?.

    How hard is it to build an office skyscraper? It's just a bunch of little 100 square foot offices stuck together, right? This isn't...

    Aug 20, 2018 at 12:41 PM
  8. russ_watters replied to the thread How common is it for professors to yell at their students?.

    To be more fair, there is nothing fair about that. It just means that the students learned the abusive style, it doesn't make it less...

    Aug 20, 2018 at 9:01 AM
  9. russ_watters liked Guineafowl's post in the thread Alternating energy.

    You seem to be thinking that the electrons in the power lines travel from the source, along the lines and back to the source again 60...

    Aug 20, 2018 at 7:21 AM
  10. russ_watters liked gmax137's post in the thread B Why do we take k=1 in the derivation of F=k*ma?.

    I just don't understand the idea that Newton 1 & 2 are "definitions." Newton says, acceleration is proportional to force. This revises...

    Aug 19, 2018 at 3:20 PM
  11. russ_watters liked waves and change's post in the thread I Natural/resonant frequency.

    Yeah sorry for the confusion. You are actually correct as the verbiage I used isn’t technically correct. “ natural frequency “ is...

    Aug 19, 2018 at 3:19 PM
  12. russ_watters liked fresh_42's post in the thread schizophrenic physicists.

    "Nuts" is a stupid word. There is no diagnosis for nuts and to call every one in 200 people (estimation found on Wikipedia) nuts because...

    Aug 19, 2018 at 3:13 PM
  13. russ_watters liked Windadct's post in the thread Alternating energy.

    Personally - I really do not like discussion of EM Wave in AC power distribution, IMO it only complicates the discussion and is not...

    Aug 19, 2018 at 2:19 PM
  14. russ_watters replied to the thread I Natural/resonant frequency.

    Fair enough; it wasn't at all clear from what you said prior to my post. When I see mechanical resonant frequency cited, I think of the...

    Aug 19, 2018 at 2:12 PM
  15. russ_watters replied to the thread Alternating energy.

    Yes, it does*. So....I'm not sure I see what your question is really getting at. *Note: Since electricity is really an...

    Aug 19, 2018 at 2:03 PM