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<p>(e.g., a planet's orbit in space or the trajectory of a car on a road) by inclusion of the dimension time, and typically encompasses a large area of spacetime wherein paths which are straight <a href="page.php?w=perception">perceptually</a> are rendered as curves in spacetime to show their (<a href="page.php?w=Principle_of_relativity">relatively</a>) more absolute <a href="page.php?w=position_states">position states</a>--to reveal the nature of <a href="page.php?w=special_relativity">special relativity</a> or <a href="page.php?w=gravitation">gravitation</a>al</p><p>
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