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This Defense Intelligence Reference Document from the Defense Intelligence Agency is dated 3 January 2011. It was produced under the Advanced Aerospace Weapon System Applications (AAWSA) Program as part of a series of advanced technology reports. The report asks whether negative mass exists and whether it could be used for propulsion. It concludes that one route might be an ultra-light form of matter that could have gathered at the Moon's center. Reaching it would take a tunnel dug with thermonuclear shape charges.
“rotating”7 pages
UNCLASSIFIED//F811. 8FFll!l*L 1!1!11! t!IIU:!Y Comparing this result with (66), one sees that he would obtain the same distanced', if he uses a contracted rod as a measuring stick, or Einsteins's constant light velocity postulate. The velocity of light between A and B by using a rod to measure the distance and the time it takes a light signal in going from A to B and back to A, of course, will turn out to be equal to c, because according to (72) 2d' (74) Rather than using a reflected light signal to measure the distance er, the observer at A may try to measure the one-way velocity of light by first synchronizing the clock B with A and then measure the time for a light signal to go from A to B. However, since this synchronization procedure also uses reflected light signals, the result is the same. For the velocity he finds d' d' 2d' 1/2(11 +1 2 )-1 1 A A A (75) By subtracting the equations (70) one finds that (76) which shows that from an absolute point of view the "true" reflection time t R at clock B is only then equal to t 8 , if v = 0. From an absolute point of view the propagation of light is isotropic only in the distinguished reference system, but anisotropic in a reference system in absolute motion against the distinguished reference system. This anisotropy remains hidden due to the impossibility to measure the one-way velocity of light. The impossibility is expressed in the Lorentz transformations themselves, containing the scalar c 2 rather than the vector c, through which an anisotropic light propagation would have to be expressed. 22 UNCLASSIFIED// FOK bi fl@Itllt ~&Ii SU.blf
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Report, from the dia collection. The PDF is mirrored here; the original link is under it. 43 pages are in the text index: search them above, or from the library's search.