light wave particle stuff

Discussion in 'Off-Topic' started by SheepHugger, Mar 13, 2015.

  1. SheepHugger

    SheepHugger Well Liked Viking

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    http://actu.epfl.ch/news/the-first-ever-photograph-of-light-as-both-a-parti/

    The first ever photograph of light as both a particle and wave
    [​IMG]
     
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  2. Hollister

    Hollister Fun-Taker Berserker

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    Funny thing I always thought of light as more of a particle then a wave. With it being a particle it means it must have some sort of mass and weight which means it can be affected by gravity. Just need enough gravity like a black hole.

    I'm sure you could theoretically calculate the weight of a light particle by its speed, and the amount of gravitational forces that a specific black hole has, and the amount of the bend or change in direction that occurs when light is near a black hole. Though this is just a guess.
     
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  3. XPHAku

    XPHAku Well Liked Thrall

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  4. Hakija

    Hakija Chaos Pony Viking

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    Rolling you say? We'll strap magnets to his corpse and use him to generate electricity! It's clean power!
     
  5. XPHAku

    XPHAku Well Liked Thrall

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    I think it might be the wrong type of rolling for that.
     
  6. XPHAku

    XPHAku Well Liked Thrall

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    You don't need a black hole, everything with mass bends light to some degree, you can use a telescope and look at Jupiter and watch it bend light around it. Just like part of why we know dark matter is there is because it has enough mass for gravity to bend light around it but since dark matter neither emits nor reflects light it looks pretty cool.
     
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  7. Hepatitis TK

    Hepatitis TK Decorative Flounce Berserker

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    I bend mass around my particle... :nanahump:
     
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  8. XPHAku

    XPHAku Well Liked Thrall

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    That is what happens when it is only one particle wide, one long and one high.
     
  9. Hepatitis TK

    Hepatitis TK Decorative Flounce Berserker

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    Yea, well thankfully it's not for the mass' pleasure, but mine! :glee:
     
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  10. SheepHugger

    SheepHugger Well Liked Viking

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    Photons do not have mass. Wake up to modern physics, gravity bends spacetime. Newton's models are merely approximation that are sufficiently accurate when used for things like lunar voyages. In wider space and in various circumstances they cease to be sufficiently accurate as they ignore many intricacies such as relativistic effects (time dilation) and curvature of spacetime.

    Don't try to think of it in terms of photons requiring a mass to be influenced by gravity. Think of it in terms of photons not bending spacetime like other particles with mass.

    Also, you can't calculate the weight of light based on it's speed. It always travels at c, speed of light. It's one of the few natural constants that are always the same. That's the funny thing. If you think you accelerated to 99% of speed of light and you have light bulbs at front of your spacecraft, for an outside observer it will look like the light coming from your lightbulbs is traveling at speed of light. At the same time it will look exactly like that to you too, you also will observe the light coming from your light bulbs at speed of light, dispite traveling at almost speed of light relative to the second observer.
     
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  11. SheepHugger

    SheepHugger Well Liked Viking

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    Like the cat.
     
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  12. Hollister

    Hollister Fun-Taker Berserker

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    That's it though. Lights constant speed means you can calculate the amount of time from distance A to B and gravitational forces applied at a given distance from the gravity source. The more near to the source the greater the bend. You have so many known constant numbers for the equation it's silly. Only thing not known is the weight which means it should be very basic to come to a conclusion.

    I also can't accept most bending space time bs because a lot of them say a black hole is a portal of sorts to another dimension. A black hole is nothing more then a high condensed ball of mass. A atom is more then 99% empty space, if you take away all that space and just have all the nucleus and electrons you could have over 100's of the same atom with the same space and drastically increasing the overall gravity created. Black hole leading to another dimension what a joke.
     
  13. SheepHugger

    SheepHugger Well Liked Viking

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    I agree, black hole leading to another dimension is a joke. It is not the currently established theory, it's just random speculation. The only thing that is truly known at the moment about what happens beyond event horizon is that none of our physics can address it, all the current models break apart.

    As for all atoms being made up of tiny particles and so, don't apply your "I'm one of the biggest living creatures" intuition to it. It's not about "empty". It's about forces and their interactions, spaces that cannot be occupied. Yes, it's possible to have intense pressure by pushing things together, but it's hard to actually say what happens at extreme cases like black holes.

    I don't see why curvature of space would be bs. As you know, movement is linear. Space station on Earth's orbit is going straight line. It's the space that is curved, hence it appears to be making a constant turn, but that's only because it's drawing a straight vector through the geometry of spacetime that is bent.



    And, lots of people, some of the smartest people ever to live, have spent their entire lives studying light. Look it up, it's not an authority thing, it's about the experiments, mathematical models and theories they've made that anyone can test. They've found out that photons, particles of light, are massless. It's how it works. There appears to be 16 particles and 4 forces.

    More about light or photons:
    http://en.wikipedia.org/wiki/Photon
     
  14. Sean Agilwulf

    Sean Agilwulf Well Liked Viking

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    If a space ship traveling at .99c relative to Sally fires a space torpedo that travels .99c, also away from Sally, does it travel at 1.98c relative to Sally? :slow:

    I'm sure you know the answer to this one Sheep.

    I want warp drives to work. So badly... So very badly. "To boldly go where no man has gone before":D
     
  15. Hollister

    Hollister Fun-Taker Berserker

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    Warp drive functions by creating a bubble around the ship but in front of this bubble space is shortened. So basically 10 yards now becomes a foot so now you are traveling 10 yards per every foot you travel. Behind the ship the space goes back to be normal.

    We're actually closer to replicator technology than warp drives.
     
  16. XPHAku

    XPHAku Well Liked Thrall

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  17. SheepHugger

    SheepHugger Well Liked Viking

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    What do you mean by a replicator though? Merely something that makes copies of itself is not that difficult, however they won't be anything like replicators from Star Gate because those fuckers break several laws of thermodynamics. They're just made out to be cooler so they're more menacing. I think overall Star Gate, while being one of the best low-sci-fi series out there, might not be the most ideal text book material as it merely borrows all sorts of ideas and even misconceptions to form content.

    Yea, Warp Drive aka Alcubierre Drive requires things like "exotic matter" and "negative energy". That's not an engineering problem, it's more of a "do those things exist, is it even possible for beings of matter to manipulate those things?"

    [​IMG]

    And yea, you don't just contract space in front of ship, you also expand it behind the ship. If a light beam or a particle enters your bubble from right side, it will exit the bubble in a different place on the left side as it will be carried along by the bubble. Similarly particles that were to exit the bubble from bubble's front will be highly energized when the bubble slows down, effectively the bubble will be blasting forward intense gamma radiation. The annoying part about that is that it can penetrate immense volumes of matter and it is randomly absorbed across any matter it comes across, causing secondary ionizing radiation that damages biological as well as electric entities all the same.
     
  18. Hollister

    Hollister Fun-Taker Berserker

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    Star gate had replicators?

    Only watched Star Trek regularly so thats the one im referring to. A Star Trek replicator functions by replicating the atomic make up of a given item. Like a cup of water. It would know the atomic make of the cups material and it would form the cup by having specific atoms joining one another until the structure of the cup is formed. Water is rather easy in that it's just h2o. How it's forcing the atoms together I don't know. But currently we are doing this at the atomic scale, replicating basic chemicals. 3d printing on the atomic scale as well with using different elements.

    Current 3d printers are doing nothing more then eject specific amounts of molten plastic at precise locations over and over till a noticeable object is formed. They are in no way near to being a replicator.
     
  19. SheepHugger

    SheepHugger Well Liked Viking

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    DSi have a 3D manufacturing device that works in zero-G. It can work on metals. There are many industrial grade 3D printers that can work metals, though their prices are in the millions and beyond range, so they're not that well known but are highly valued for things like being able to replicate spare parts for devices for which those are no longer being made, when you need to quickly customize a part etc. that would be unfeasible using standard mass production assemblies. Afaik they're mostly in use for things like aviation and valuable spare parts etc., expensive shit.

    Basically I understood that Star Trek replicators would have nano-scale assemblies and stores of various base atoms that can be combined to create complex molecules. It requires a lot of power, but a ship that annihilates antimatter for fuel and bends spacetime is hardly in short supply. I always considered in that universe it being a "compact" way of managing logistics and some life support functions on a ship with lots of power to spare.

    I just guess it's a lot more complex to pull of fusion of atoms and such in a small space without huge excess heat, radiation and such.

    In SG the replicator term was used for self replicating robots that threatened to overrun several galaxies. There was also a form of physics defying nanites that somehow found intense amounts of power to replicate new nanites on endless basis, completely ignoring the sheer amount of energy required for atomic level manipulations.
     
  20. Skwisgaar

    Skwisgaar XO Thrall

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