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P1 - They WERE used on land, extensively. Note on land the horizon is indeterminate as hills and valleys are present. A still pool of water (aka artificial horizon) is known to perfectly parallel to the true horizon and accurate measurements can be made. (Compare the direct image of the Sun to its reflected image and note the angle between the two.) P2 - ...


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I strongly suggest You research Einstein's brilliant insight in "The Principal of Equivalence". You will begin to see that what we think of as a "force" or hypothetical "graviton" as a carrier of force is not valid. An accelerating field= gravity. No "pull". No force. Seems hard to grasp, because it is. 'might try and get "Gravity Revealed" by Ronald ...


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Addressing the second part: There are really two different aspects here: the navy and the army. For the navy, it basically boils down to one thing: after WWII, radar got a lot better a lot faster, and quite quickly began to outperform the optical systems. The big benefit is not intrinsic range precision, but the ability to work in all weathers. For the ...


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Can I suggest a different way of doing this? The first thing you should always do with experimental data is graph it to get an idea what it looks like. The graph of your data looks like: The blue dots show the data points, and they obviously lie on a straight line (give or take experimental error). So I used linear regression to fit a straight line to ...



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