Secret Worlds: The Universe Within
View the Milky Way at 10 million light years from the Earth. Then move through space towards the Earth in successive orders of magnitude until you reach a tall oak tree just outside the buildings of the National High Magnetic Field Laboratory in Tallahassee, Florida. After that, begin to move from the actual size of a leaf into a microscopic world that reveals leaf cell walls, the cell nucleus, chromatin, DNA and finally, into the subatomic universe of electrons and protons.
link: http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/
link: http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/
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