Recent content by sday

  1. S

    Rocket engine vs jet engine efficiency

    One thing to throw into the discussion is that when speaking of efficiency, we are talking about a high bypass ratio jet engine vs low bypass. All modern jet engines with high efficiencies are the high bypass ratio. Look at a B777 and the diameter of the engine nacelle is huge compared to the...
  2. S

    Rocket engine vs jet engine efficiency

    Like saying a Prius is more efficient than a traditional car, but once you start factoring the cost of batteries, manufacturing, etc the gap narrows
  3. S

    Rocket engine vs jet engine efficiency

    When u say efficiency over time do you mean just in quantity of fuel burnt, cost of fuel burnt or total cost of the most efficient jet engine vs. most efficient rocket engine. (Cost to operate) not to mention if speeds get high enough now the hull cost goes up for rocket due to heat not to...
  4. S

    Quantum Telecommunication for dummies (me)

    Thanks for the patience Dennis. One thing that I'm still trying to understand is what do we mean when saying the particle is in an indeterminate state when it leaves the emitter? Are we saying it's unknown because the particle hasn't been measured/observed yet, or that they really don't have a...
  5. S

    Quantum Telecommunication for dummies (me)

    @Naty1 - thanks for the breakdown. I am studying the various papers. Some of my questions came from reading this one http://www4.ncsu.edu/unity/lockers/users/f/felder/public/kenny/papers/bell.html So if the state is indeterminate before measurement... is that because we have no way to measure...
  6. S

    Quantum Telecommunication for dummies (me)

    Thanks for the follow up information. I've read through most of the articles posted. One thing I'm fuzzy on is what is exactly happening with the polarization. I understand that it is the magnetic orientation of sample. The detector detects 120 degree increments in angle of polarization...
  7. S

    Quantum Telecommunication for dummies (me)

    Just read that last night. I'm still digesting what I read. I feel like I'm trying to figure out how Houdini pulled the Rabbit out. ...how to peel the magic away so the concept makes sense to me. :)
  8. S

    Quantum Telecommunication for dummies (me)

    Thanks DennisN for breaking apart each of my questions. It helps me significantly in my pursuit of knowledge. Many times answers gloss over the details of the questions which doesn't help the "seeker of knowledge" :) In fairness to all those helping me understand this, I'm going to spend a...
  9. S

    Quantum Telecommunication for dummies (me)

    Thanks DennisN. Although incomplete, I thought the coin example helped me make one step. 1. So once they are created, their polarization is unknown until measured. Once measured the photon disappears. I assume you mean only the one measured disappears, and the mirrored version is stil...
  10. S

    Quantum Telecommunication for dummies (me)

    Ok so I'm lost on time-dependency. I'm not understanding how you can make an observation in Lab A on a group of photons and be able to make an observation 10 minutes later in Lab B to get a result that would substantiate a claim that entanglement has occurred. ? I would think after making the...
  11. S

    Quantum Telecommunication for dummies (me)

    In another thread in another forum I started side tracking the thread. I'm trying to understand why communication is not possible so I am reposting as suggested some of the info over here in a more appropriate forum to continue the discussion. I'll start with my favorite post that helped...
  12. S

    What happens if C is faster than the speed of light?

    @DennisN - That was awesome! Thanks. Let me see if I have this straight then. So for them to know, they measure say 100 photons and get 70% head 30% tails. Then go measure the other sample from lab B and it should be something statistically close to 30% heads and 70% tails. Is that correct...
  13. S

    What happens if C is faster than the speed of light?

    Thank mfb for trying to explain it to me. I think it's a topic that would need a more real-time dialog for me to grasp what I'm missing. I don't have enough base knowledge to connect the dots.
  14. S

    Does this strange coil really consume 1700Amps?

    Or are we saying that on a short burst the coil is unable to translate all available power (that formulas dictate) in such a short period of time, which means the load at circuit breaker didn't ramp up to max calculated value? Is there a delay like that? I would think so as the coil heats up...
Back
Top