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Usually examples like 1D, 2D, 3D (Spacial) is x+y+z measurements that can be made from a predefined 'Starting Point'. You just measure the directional opposites like, (lets say you are at the Start Point in your house which is an Area of Space) x=distance you walk Forward or Backward, plus y=distance you walk left or right, then add z=distance walking Up or Down the stairs ariving at the End Point and now have a Resulting Distance from Start Point to End Point. Then usually 4D is something like the Time between Start & End in reference to Velocity. So you get a 'Distance' along with the coresponding 'Time' it took to Travel the Distance. This is of course made possible because of a 'Relative' comparative value of Spacial Start Point for 3D and Max. Speed of Light in Vacuum Space or 'C' for the comparitive Time Value.
Originally posted by xxKrisxx
Originally posted by DarkSide
how can all the atoms of one star be shrinked to fit in an area smaller than 1 atom itself?does the space between the neutrons/protons and the electrons get smaller?
The "empty space" of an atom is comparatively enormous to it's components...so I hear
The radio-controlled black spheres are meant to fly in and out of structures weakened by earthquakes and other natural (or unnatural) disasters. It's equipped with an on-board camera that transmits live video footage back to the person controlling it, and boasts eight maneuverable rudders, sixteen spoilers and three gyro-sensors powered by lithium batteries. The frame is made from lightweight carbon fiber and styrene components, with a total weight of 12.3 ounces.