Recent content by Egregious

  1. Egregious

    Graduate Why constant expansion makes distant galaxies recede faster

    I believe that this was in response to my inquiry. Thank you, Marcus for your kind reply and for everything you do for this community. Again, I am not a physicist. I am merely attempting to resolve a logical conflict in my own mind. Briefly, I agree that a richer understanding of expansion...
  2. Egregious

    Graduate Why constant expansion makes distant galaxies recede faster

    I have a very brief layman's question. Thank you everyone for the lively discussion that is mostly over my head. Q) Based on red-shift, do we know/speculate/theorize that the acceleration of the universe is increasing or decreasing? There are more technical ways to ask this question. Note...
  3. Egregious

    Graduate Why does redshift prove cosmic expansion and not just spacetime expansion?

    Preface: I am not a physicist, but I do tend to accept the theories of an expanding and accelerating universe. I am not inquiring to dispute these ideas, but it recently occurred to me that there is an obvious fallacy in the arguments for these ideas as presented in the popular media. I wish to...
  4. Egregious

    Undergrad Fluid velocity and impact force in 18 vs 27 gauge needles

    I haven't heard much on this topic, really, so I'm not basing my inquiry on any preconceived notions about which is better or worse. I am merely trying to understand a physical concept. Clearly, if you shove a given volume of fluid through a smaller hole, the jet generated is going to move...
  5. Egregious

    Undergrad Why does a piggyback IV bag empty before the main bag?

    Hi Wolf!, I'm a nurse, too. From reading this thread, I think I understand the answer. Think of it this way: Imagine a really long tube extending vertically that contains an entire liter of fluid. Now, imagine a shorter tube (same diameter) extending vertically that contains only 100mL of...
  6. Egregious

    Undergrad Fluid velocity and impact force in 18 vs 27 gauge needles

    Hello, and thank you kindly for considering my question. Background: Medical needles come in gauges such that a smaller gauge represents a larger needle. Scenario: Doctor Jack says "18 gauge needles are best for this procedure", but Doctor Jane says "27 gauge needles are best because...
  7. Egregious

    Graduate Relativistic Mass thought exercise with approaching bodies

    Thanks all for the many replies. This has been insightful and your feedback has given me much to ponder.. :cool:
  8. Egregious

    Graduate Relativistic Mass thought exercise with approaching bodies

    "Relativistic Mass" thought exercise with approaching bodies I understand that the concept of 'relativistic mass' is somewhat controversial, but for reasons that are unclear to me. Nevertheless, I humbly pose the following thought exercise/inquiry: For starters, I understand the formula for...