I am looking for a light or anything else that has something in it that will detect and track motion, and point a light, camera or whatever at the moving object. It needs to be relatively small (enough to be supported comfortably by a small cat, don't ask why) and preferably in the $50-$100 range. I have tried searching online but have come up empty. Also, I need it to be able to be powered by standard batteries (AA, D, C etc) thanks!
There are several models how gravity might work. Einstein, for example, presumed that mass bends space and that the greater the mass, the greater the subsequent warping of space around that body. Think of it as a rubber sheet with a bowling ball in the center (the earth). We put a BB on the outside of the sheet and it rolls down the rubber to the bowling ball that would be an example of how mass bending space could cause reaction in the form of gravity (a 2 dimensional model). The current model, based on quantum mechanics, supposes the existance of gravitons which would interact with mass and cause them to attract. Personally, i think this is carrying quantum science just a LITTLE too far, but hey, if people want to buy that you're falling to the earth because you just got hit by millions of little gravity packets, sure. The truth of the matter is that no one knows for sure how gravity works and there are lots of different theories.
ok syther for the start teach it a bug move like X-siccors and for water i recremend cloyster and fire nineteals and everything else is good
Course we do . Newton worked it out 400 years ago