LENS-Low Energy Neutrinos Spectroscopy.  It is a very intersting subject which I am trying to understand.  It is a project at VA Tech.
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I'm sorry so few people know what neutrinos are. We are being bombarded by them every second. They are all around us, and I'm serious. In one second, several trillion hit the tip of your pinky alone.\n\nAnyway, I think LENS has to do with detecting neutrinos from the sun. The sun's core undergoes nuclear fusion, making helium from hydrogen. A side product of this reaction is the neutrino, at first thought to be a form of a photon. At first, the neutrino was thought to be massless and to travel at the speed of light. But later when we started detecting half as many neutrinos as thought probable, we realized that the neutrinos does have some mass, and must not travel at quite the speed of light (no particle with mass can travel at c). So now projects like LENS are trying to measure the mass of the neutrino and its other characteristics. They must take into account that this is a relativisitic particle and apply the theories of relativity to trace back to when it was emitted by the sun's core.
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Something involving atomic spectra.  For example see\nhttp://www.fas.harvard.edu/~scdiroff/lds/QuantumRelativity/StreetLampSpectra/StreetLampSpectra.html
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http://www.ehow.com/how_17057_make-simple-telescope.html
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We don't (as yet) know what dark matter is composed of. It certainly is *not* ordinary matter since it is known not to be composed of baryons (like protons and neutrons). While neutrinos are certainly *part* of the dark matter, there are not enough of them to account for all the dark matter we know exists. Other suggestions are particles called axions, but nothing is certain in this regard.
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Try Yahoo Education, Physics,
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Experimenting with magnetorheological fluids.\nSuspending a magnet in mid-air.\nLevitating pyrolytic graphite.\nA Gauss Rifle: A Magnetic Linear Accelerator.\nBuilding a Curie-effect heat engine.\nGoing further:\n\nSuperconductors.\n\n \n \n \nThe Gauss Rifle:\nA Magnetic Linear Accelerator\n \n \n This very simple toy uses a magnetic chain reaction to launch a steel marble at a target at high speed. The toy is very simple to build, going together in minutes, and is very simple to understand and explain, and yet fascinating to watch and to use.  \n \n gauss rifle Click on image for animated view  \n \n The photo above shows six frames of video showing the gauss rifle in action. Each frame shows 1/30th of a second. In the first frame, a steel ball starts rolling towards a magnet taped to a wooden ruler. In the second frame, a second ball can be seen speeding between the rightmost two magnets. By the third frame, the accelerator has sped up so much that the ball that is seen leaving the left side of the device is just a blur as it smashes into the target. One ball, starting at rest, has caused another ball to leave the device at a very high speed.  \n \n gauss rifle materials Click on image for larger view  \n \n The materials are simple. We need a wooden ruler that has a groove in the top in which a steel ball can roll easily. Any piece of wood or aluminum or brass with a groove will work. We chose the ruler because they are easy to find around the house or at school or at a local stationery store.  \n \n We need some sticky tape. Again, almost any kind will do. Here we use Scotch brand transparent tape, but vinyl electrical tape works just as well.  \n \n We need four magnets. Most any type will do, but the stronger the magnets are, the faster the balls will go. Here we use the super strong gold-plated neodymium-iron-boron magnets we have made available in our catalog for the other projects. They work great.  \n \n We will also need nine steel balls, with a diameter that is a close match to the height of the magnets. We use 5/8 inch diameter nickel plated steel balls from our catalog.  \n \n The only tool we will need is a sharp knife for trimming the tape.  \n \n gauss rifle first\nClick on image for larger view  \n \n We start by taping the first magnet to the ruler at the 2.5 inch mark. The distance is somewhat arbitrary -- we wanted to get all four magnets on a one foot ruler. Feel free to experiment with the spacing later.  \n \n gauss rifle tape\nClick on image for larger view  \n \n With the sharp knife, trim off any excess tape. Be careful, since the knife will be strongly attracted to the magnet.  \n \n It is very important that you keep the magnets from jumping together. They are made of a brittle sintered material that shatters like a ceramic. Tape the ruler to the table temporarily, so that it doesn't jump up to the next magnet as you tape the second magnet to the ruler.  \n \n gauss rifle two\nClick on image for larger view  \n \n Continue taping the magnets to the ruler, leaving 2.5 inches between the magnets.  \n \n When all four magnets are taped to the ruler, it is time to load the gauss rifle with the balls.  \n \n gauss rifle all\nClick on image for larger view  \n \n To the right of each magnet, place two steel balls. Arrange a target to the right of the device, so the ball does not roll down the street and get lost.  \n \n To fire the gauss rifle, set a steel ball in the groove to the left of the leftmost magnet. Let the ball go. If it is close enough to the magnet, it will start rolling by itself, and hit the magnet.  \n \n gauss rifle ready\nClick on image for larger view  \n \n When the gauss rifle fires, it will happen too fast to see. The ball on the right will shoot away from the gun, and hit the target with considerable force. Our one foot long version is designed so the speed is not enough to hurt someone, and you can use your hand or foot as a target.
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http://www.exploratorium.edu/snacks/blind_spot.html
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the Michelson-Morley experiment\n\nhttp://en.wikipedia.org/wiki/Michelson-Morley_experiment
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I have a pair of those interesting deep-dish-shaped double-domed parabolic mirrors from Edmund Scientific, the top one sits upside-down on the bottom one, and the top one has a hole in it.  So when you put something inside it, and move away at an angle, an image of the object appears to be sitting above the top dish.  I ask people, "Hand me that little pink pig sitting on that dish".  They see it, reach for it, pick up nothing, reach for it again, and see their fingers apparently pass right through a solid object.\n\nWhat is the reality there?  My eyes tell me there's a little pink plastic pig sitting on the top of that dish.  Yet when I try to pick it up, my fingers pass right through it.  But then I distort the mirrors a little, and the pig blurs in an odd way that lets me see that he's actually a reflected image from inside the unit.  And if I understand optics sufficiently, I understand that it is possible, with certain arrangments of parabolic mirrors, to erect "real" images (versus the more common "virtual" images that we see in most mirrors and lens) of objects, and even design and build versions of my own, with the effects and capabilities fully determinable in advance.  That's reality.\n\nReality does exist.  Granted, we have a limited and distorted view of it due to the limitations of our senses, but it does exist.  For example, this desk in front of me seems like a solid object.  But in truth, my view of it is limited by the fact that my eyes are not able to resolve the electrons orbiting the nuclei that make up the desk, and that the vast majority of this desk is vacuum, therefore the fact that, when I touch this supposedly-solid desk, what's actually happening is that the electrostatic field generated by the electrons of the desk are exerting a force against the electrostatic field of the electrons orbiting the nuclei of the atoms making up my fingers.  There are no "solids" touching anything, just fields pushing against each other the way 2 magnets can push against each other.\n\nTo me it looks like reality begins immediately outside your eyes.  All is reality.  The only place it ends is inside your head, when you misinterpret what your limited senses tell you.
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yes they can.  there is an entire field of active research devoted to x-ray optics, which has lots of use in medical imaging, crystallography, protein studies, and space telescopes.\n\ngoogle for x-ray optics:\nhttp://www.google.ca/search?hl=en&q=x-ray+optics&meta=
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C is true. The others don't really make sense.\nThey are also inherently chromatic, more efficient. Even small ones are cheaper for the size than refracting. \nHubble Space Telescope is reflector also it will work with Ultra violet light, and more precisely focuses than glass can.
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Xrays, Alpha rays, Beta rays, Gamma rays, Cosmic rays, Ultra Violet rays.
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Mork from Ork... \n\nNano Nano
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You can try the following web sites:\n\nhttp://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/light/u12l1e.html\n\nhttp://www.uwgb.edu/dutchs/petrolgy/genlight.htm
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Hi!\nI change my field of study from physics to biophysics but still its a great pleasure to solve a problem in physics if you dont mind.\nWish to see your project.\nBye
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the short summary not available, plz input in dogpile search, 3 rd optio will take to right answer.
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try this website, I just did a search and this came up:\n\nhttp://nuclearweaponarchive.org/Nwfaq/Nfaq5.html