Can you tell me about the Leslie's cube? and about how to use it an experiment for radiation?
540566
John Leslie was a Scottish physicist who devised an experiment to demonstrate how black surfaces radiated heat much more than shiny surfaces. \n\nHis experimental apparatus was a cubical vessel filled with boiling water. One side of the cube was highly polished metal, one side was painted black, and the remaining two were dull metal (copper). \n\nHe used this to demonstrate that radiation was greatest from the black side and negligible from the polished side. \n\nThis apparatus is known as Leslie's cube.
748213
Try Edmund Scientific on the web..but if you want to make your own try the link provided.\n\nGood luck!
111035
I would refine the problem some more first.\nResearching "the impact of objects on wood" is a little vague.  What type of objects?  What do you mean by "impact" in a scientifically testable way?  What type of wood (not just "oak" or "pine", but wooden boards?  wooden chairs?).\n\nThink of what your controls for the experiment will be, what will be your variables, how will you test, ...\nFollow the scientific method.
417113
Below is a website through Yahoo! just for science fair project ideas, etc.  I hope this helps.
641267
One use is superconductor research.\n\nhttp://www.iitap.iastate.edu/htcu/backissues/95APR01EM.TXT.html
745993
There is a great animation that explains the experiments in detail (with pictures) on the Mendel site at http://www.mendel-museum.org/eng/1online/experiment.htm
317868
well for my physics project for the boards i made a photoelectronic burglar alarm- at the heart of this was an LDR( Light Dependent Resistor) when the beam of light is obstructed (think laser in the movies-lol) the LDR resistance rises and the circuit inside is set into oscillation and the alarm sounds- other good projects would be a rain alarm, a rectifier, an electroscope,..... the possiblities are endless- i suppose you could do anything involving electric circuits since thats what the cbse calss 12 physics text covers most- i doubt ud want to do anything on ray or wave optics
755935
Great idea.  What is your hypothesis?  What experiment will you do?  What data will you collect?  How will you interpret it?
375243
1) Assuming there are no strong EM fields near the magnet, it should behave exactly as a similar object would due to gravity. The gravitational field of the earth is too weak to produce a measurable effect for this experiment.\n\n2) You need a very long liquid filled container with a speaker on one side and a microphone on the other. Then using a computer to produce and receive the sounds, measure the time taken for the sound to traverse the distance. For accurate results the water needs be still.
90862
Many Many years ago I did one for a science project. I used a round box /painted. Lined with plastic wrap. I them coated the bottom of the box with hair gel.  then i made the nucleus out of a nerf ball I cut into kind of a lima bean shape.  Little braided pieces of yarn for those mitochondrion.  etc.  Whatever I could find around the house that looked like something inside the cell.   My science teacher liked the hair gel the best (it was the cytoplasm or whatever you call it)
730887
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.
416562
Yes, it is a superconductivity experiment.\n\nTry a Yahoo Search for:\nsuperconductivity experiments\nhttp://search.yahoo.com/search?ei=utf-8&fr=slv1-wdgt&p=superconductivity%20experiments\nsuperconductivity experiment levitating magnet\nhttp://search.yahoo.com/search?ei=utf-8&fr=slv1-wdgt&p=superconductivity%20experiment%20levitating%20magnet\n\nBrowsing around, I found this kit:\nhttp://www.wondermagnet.com/superconductor.html\n\nNote that most of these experiments will require liquid nitrogen which requires care and special handling.  Not sure if you can obtain it very easily. You may want to talk to your science teacher about it.
938092
This site is terrific for kids - Einstein section:\nhttp://www.pbs.org/wgbh/nova/einstein/\nThis is a bit long-winded, but a little more than halfway down are some good, basic explanations/examples of the T.O.R suitable for kids:\nhttp://www.wesleyan.edu/synthesis/culture-cubed/haas/maintemp.htm
73023
A classic, but great visual experiment is sucking a hard boiled egg into an erlenmyer flask.  It is done by using the principles of the kinetic theory of matter.  \nAnother cool project might be doing something with dry ice.  Find a place that you can get dry ice and do fun stuff with it, like create smoke, put bubble solution in water and then drop in dry ice to make bubbles that, when you pop, let out white smoke.\n\nAnother idea might be to do some cool colorful reactions.  Make some dye molecules or something.\n\nHope one of these ideas works for you.
747869
This was an experimemt the US Navy conducted.  They attempted to "Cloak" a destroyer using magnetism.  How successful it was I am not sure.  There are several myths surrounding the experiment which depict gross outcomes of the experiment.
189752
sphere, cube, pyramid, cilinder
1121613
Check this one\nhttp://science.nasa.gov/Realtime/jtrack/3d/JTrack3D.html