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Found 9 results

  1. Forgive me if my reasoning is based on flawed logic and information. I am no physics expert. As I understand it when light strikes an object the energy of the photons is absorbed by the atoms that make up the object. An atom's electrons can only orbit its nucleus at one level or another, nothing in between. When the atom absorbs the photon, the electrons jump up another level before going back down again. When this happens a new photon is emitted by the atom, it's energy dictated by the level the electron fell. Once this photon enters the eye we perceive it as a color prepending on how much e
  2. Can you imagine a universe without any color? Everything that we know of emits, reflects or transmits colors as we perceive them. We also know that we see through light and visible light is composed of different wavelengths that correspond to different colors. Then do objects or light really have color? http://youtu.be/XTrU94l3TFI What do you think?
  3. What does white mean in white light? what exactly is white light?
  4. New thought experiment (although this one can be done in a lab) Photons exert radiation pressure. In fact, the effects of radiation pressure need to be accounted for in some ultrasensitive measuring devices. They also make "solar sail" propulsion possible. Consider building a two boxes. One of these has a reflective surface on the inner side with 99.9% reflective efficiency. The other has an inner reflective surface of 100% efficiency. In the latter instance we truly have a "black box" since any light entering the box is continuously reflected on the inside of the box. Put a standar
  5. In a world looked at in pictures in the mind, we subjectively ''see'' a green apple turn into a red apple, likewise we can see this of Bananas but obviously green to yellow. Subjectively I do not notice any change in the light , but I do notice a change in ''colour'' of the apple or the Banana. delta (green) to red = ? delta (green) to yellow = ? added - an apple remains red even in the shade and a banana remains yellow.
  6. There is a clear line of sight between myself and an object, the air is transparent and is also present between my eye and object, do we see light in that space or do we only see light that enters our eyes? Also, I can see distance , between my eye and object I have a clear line of sight, I see the entirety of the spacial distance between eye and object, so why is it said that it takes 8 minutes of time for the light from the sun to arrive and why is it said we observe the Sun in its past if we can quite clearly observe the start point and end point of the clear line of sight of the dis
  7. 9,192,631,770 Hertz (Hz, or cycles per second)=1 second = 0.0288mile per second=46.3491072 meters per second earth's circumference/time=24901/86400=approx 0.0288 mile per second=approx 46 meters a second relative movement to the Suns movement c=299 792 458 m / s 299 792 458 / 46.3491072=*6468138.7865 faster than time
  8. I am supposed to shoot up a six-minute speech along with a presentation at a competition nearby. The topic is "Harnessing Light: Possibilities and Challenges" Therefore, my question is what do you think are the possibilities and challenges of harnessing light? I am supposed to stick to the topic entirely, and that is what makes it difficult. I would be glad if some knowledgeable person shares his/her knowledge and views! Thank you! :-)
  9. Dr. Chris Nagel has been able to, by manipulating the knotted structure of matter with light, craft magnetized copper, transparent copper, iron harder than diamond, nickle you can shatter like glass with a hammer, and dozens of other elements with tailored properties. His patent claims underlying relativistic transformations: "Devices improve control by selection, inversion, fortification, uniformization and mapping background energy (including vacuum energy, dark energy and/or dark matter, grid or brane energy) and including electromagnetic energies in various forms and states of aggregatio
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