Notice how each picture is actually an image of something that is 10 times bigger or smaller than the one preceding or following it. Click on the Auto button to return to the Automatic mode. Once the tutorial has completely downloaded, a set of the arrows will appear that allow the user to increase or decrease the view magnitude in Manual mode. 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. 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. View the Milky Way at 10 million light years from the Earth. Molecular Expressions: Science, Optics and You - Secret Worlds: The Universe Within - Interactive Flash Tutorial
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