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    Orientation of Satellites

    How are artificitial satellites made to point to the surface of the Earth as they orbit? Is it due their spin angular momentum?
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    Floating Halo

    "Floating Halo" This is an oversimplification that assumes the earth is perfectly spherical, ignores gravitation pulls from objects other than the earth, assumes that a superstrong material could create a giant structure that can withstand enormous stress and that it's density is constant...
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    Neutron Interactions

    At a macroscopic level it appears that when two objects collide, they physically interact and the atoms touch. However the charges of the electrons actually repel one another and they don't physically touch. Correct? A neutron however has no charge so what happens when a neutron collides with...
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    Properties Of Gravity

    Gravity seems to be a very unusual force. From what i understand: Gravity can bend space-time Gravity occurs with an object with mass Gravity can attract objects through barriers Gravity attracts each unit mass of an object with the same force. Can people add and correct any...
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    Definition Of A Photon?

    I have been told many different stories of what light is could someone clarify exactly what it is? At the moment i am being told it travels by displacing matter but doesn't this mean that it would lose energy and eventually die? I thought it was supposed to be stable. Also how does it travel...
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    Questions on observation

    Due to people who think they know what they are talking about i have heard different anwsers to the same question. By observing a wavefunction of an electron in an experiment such as young's double slit. Does the act of physically being observed with a photon collapse the wavefunction or...