Posts Tagged ‘Reference Frames’

Einstein in four *spatial* dimension

Why many physicists chose to define the universe in terms of the physical properties of a time or space-time dimension instead of four *spatial* dimensions is puzzling because, as was shown in the earlier article "Defining time" Sept 20, 2007 there is no observational evidence supporting it having physical properties.  Gravity and space-time But even […]

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Brain Changes May Be Responsible For Clumsiness In Old Age

redOrbit Staff & Wire Reports – Your Universe Online
Often attributed to age-related decay in vision and physical prowess, incidents of clumsiness in seniors could actually be caused by changes in the brain, researchers from Washington University i…

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