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B Intelligent Light

  1. Apr 27, 2016 #1
    I ask my question again because I'm new here and chose unrelated title.
    I am wondering if there can be any intelligent light used as a means for communicating with objects existing too far away in the universe. Because of its speed, it can be used in the mentioned context and this way the slow race of human being in proportion to universal objects can be improved a lot. The definition of light is very important here. Many objects have been intelligent yet like various sensors now used in numerous devices. They are kind of intelligent. Can it happen to light and its constituting particles? It's clear that in addition to light physics, quantum physics and other branches may be involved too.

    I'll be glad if any expert answer this question?
  2. jcsd
  3. Apr 27, 2016 #2


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    Staff: Mentor

    By "intelligent" I'm assuming that you mean the ability to adapt somehow to things that are sensed at the head of the light beam. I believe the short answer is no, since you would presumably need something physical to do the sensing, and nothing with mass can travel at the speed of light c. And any sensing you did back at the light source would not be able to propagate any change to the light at the front of the beam.

    What sort of changing of the light do you have in mind? Changing direction, or color, or what?
  4. Apr 27, 2016 #3
    I appreciate you a lot for your fast and thoughtful reply. You're right about the mass and travel at the speed of light. Maybe I should have not used the word sensing and sensors but pay attention that the sun's light plays an amazing role in such phenomenon as photosynthesis. So light can potentially be used in more complex applications.
  5. Apr 27, 2016 #4
    What would "communicate with objects" mean in your conception?
  6. Apr 27, 2016 #5
    I mean to receive a reflection of the objects of any kind in order to be analyzed from aspects of physical world.
  7. Apr 27, 2016 #6
    Dear berkemean,

    in fact, I haven't thought about the change of the light. I'm just assuming its probability. I just wonder to know my assumption is scientifically right or wrong.
  8. Apr 27, 2016 #7
    You don't need intelligent light to have a reflection.
  9. Apr 27, 2016 #8


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    Staff Emeritus
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    Your assumption is still unclear. Light behaves according to well known laws and is no more intelligent than a wave rolling up on the beach or a volley ball being hit back and forth.
  10. Apr 27, 2016 #9
    There already are laser reflectors on the moon placed there by some of the Apollo missions.
    We can use then to confirm that the Moon is very gradually getting more distant from Earth.
    Is this something like what you mean?
  11. Apr 28, 2016 #10
    You gave a very interesting example. If we add some ink on a volley ball and then hit it to a wall, we will see not only the ink sign on the wall but also the amount of ink which decreases after each touch. can we search for the same effect in relation to light?
  12. Apr 28, 2016 #11
    wow!! I didn't know that. it's very amazing. it's very close to what I mean. If the reflector gathers its data by sending and receiving laser light, it's exactly what I mean, although I see the application of light reflection more broader than this. I guess light can be used for universal explorations more faster than this. upon that, we can overcome the indefinite expansion of the universe and get some useful info about other galaxies and planets. of course it's just one of my scientific dreams and I hope to make it more clear and logic with the help of respectful expert like you in this forum.
  13. Apr 28, 2016 #12
    Dear nasu! I mean if we consider the light based on its constituting particles, we may be led to some unknown applications of it. consider quarks as an example. can we design a technology to enrich quarks of light and then try to evaluate the impression of a kind of light like laser on objects by analyzing the reflection of that enriched light?
  14. Apr 28, 2016 #13
    You seem to have very ill-formed ideas about light and its possible uses. I suggest that you study a textbook on optics, do the exercises, and gain a more rigorous understanding. At that point it is likely that some or all of your current questions will have been dispelled. However, you will also likely have new questions that will be more well-formed and interesting to all.
  15. Apr 28, 2016 #14
    I am sorry but your "story" looks like you are mixing buzz-words just for the way they sound.
    It may be ok for some SF story but it does not look like real physics. There is not much to discuss.
  16. Apr 28, 2016 #15
    I am afraid that you evade the discussion but do not underestimate imagination in science. it may be far from the reality at first but can lead to something if processed and expressed well. I thank you anyway.
  17. Apr 28, 2016 #16
    Far from reality is different from using nonsense expressions.
    Even in imaginative worlds a coffee that smells blue does not make sense. Even if the sentence is grammatically correct.
  18. Apr 28, 2016 #17
    No such thing, quarks are particles which exist within atomic nucleii.
    Light is electromagnetism which can be considered as particles called photons, which are not bound within atoms.
  19. Apr 28, 2016 #18
    unfortunately I am not in a position to do what you suggested. I wish I could. but I accept to have well-formed question and I'll try to do. I hope to receive useful feedback here to do so.
  20. Apr 28, 2016 #19
    thanks for your explanation!
  21. Apr 28, 2016 #20


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    This is an odd statement. The reflector gathers no data. Gathering data implies that something is recording information for future retrieval. That is not happening here. If I reflect a laser off of a reflector I cannot then go to the reflector and gather any data about the reflected light. The light itself may contain information, but that is contained in the properties of the light, not in the mirror. In addition, the reflector does not send or receive light, it merely reflects it. Sending and receiving implies a different process where the light is actually generated or absorbed.

    Really I think the problem here is you're using certain words, phrases, and concepts in a different manner than science does, which is causing confusion with your questions. It's like asking if my sandwich tastes blue. You could define blue to be a certain flavor, but that is not the standard usage of that word and using it in that manner will only cause confusion.

    I'm not sure what you mean. We can already gather data using EM radiation (light, microwaves, etc). Can you be more specific about what you mean?
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