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La différence entre un globe terrestre et un planisphère?
différence entre un planisphère et carte à projecton polaire
How do you do a science projecton which brand of raisin bran has the most raisins?
1. Buy as many brands as you can 2. Empty one of the boxes into a large bowl 3. Separate out the raisins 4. Count them 5. Repeat with the other brands 6. Compare the number of raisins in the different brands
Why do I see Ghost and double images on sony 48 inch rear projecton tv?
There are a number of things that can cause ghosting. Badly placed ariels can result in ghost images. A bad feed from a cable service can do the same. Within the home, poor cables between the source (cable box, DVD player for example) and the television can cause a ghost image as well. If the ghost images are smeared, and to the right of the real image, it is likely to be one of these things. In the case of three tube projection televisions, each of the three images needs to be aligned precisely to the others. If this is a CRT based projector, it is quite possible that the convergence adjustments have drifted. If the ghost images are colored, that is a good indication that convergence or alignment needs to be looked at. Most CRT projection television manuals show the method to set up the convergence, anywhere between 5 minutes' work and an hour's work. If the same ghost iamges are seen from all sources, then this is the likely problem.
