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  1. SR1419

    SR1419 replied to the thread Syria Chemical Attack 2017.

    This is an interesting video from the New York Times in which they point out several inconsistencies of both the Russian and Syrian government claims about where and when the attack occurred. It does not place blame but it does make a convincing...

    Apr 27, 2017 at 9:14 AM
  2. MikeG

    MikeG replied to the thread Syria Chemical Attack 2017.

    I am not offering the statement about intelligence sources as an argument. It is offered as a fact regarding current practices. In other words, we simply don't have all the relevant information that is available to policy makers. The Trump...

    Apr 27, 2017 at 6:42 AM
  3. Trailblazer

    Trailblazer replied to the thread A DIY Theodolite for Measuring the Dip of the Horizon.

    A single small flat surface would be far more difficult to align the camera with. The idea of having two containers connected by a tube (or a single long level) is that it gives you a nice long baseline to line your camera up with, giving more...

    Apr 27, 2017 at 2:13 AM
  4. Mick West

    Mick West replied to the thread A DIY Theodolite for Measuring the Dip of the Horizon.

    Adding floats that protrude from the tubes would increase accuracy. However you lose the symmetry of a simple tube and liquid. I like the very obvious visual of two unquestionable levels.

    Apr 26, 2017 at 9:22 PM
  5. Bass In Your Face

    Bass In Your Face replied to the thread A DIY Theodolite for Measuring the Dip of the Horizon.

    What if you floated a black object on both ends inside the tube, would that make the line more clear/obvious? Edit: ..then connecting the 2 black floating objects with something straight? Then you could scale this wider?

    Apr 26, 2017 at 7:19 PM
  6. Mick West

    Mick West attached a file to the thread A DIY Theodolite for Measuring the Dip of the Horizon.

    This is using a better camera, but I'm hampered by the light. I'll see what it looks like in the sun tomorrow. [ATTACH]

    20170426-184510-no4sx.jpg Apr 26, 2017 at 6:46 PM
  7. Mick West

    Mick West attached a file to the thread A DIY Theodolite for Measuring the Dip of the Horizon.

    So I got some of this, like $4.50: [ATTACH] Cut a bit and propped it up, added some cranberry juice. [ATTACH] This is from an iPhone about two feet away: [ATTACH] The idea here is simply demonstrate that the ocean horizon is below level in a...

    20170426-182940-3lxvn.jpg 20170426-183024-upuxd.jpg 20170426-183132-c4plp.jpg Apr 26, 2017 at 6:38 PM
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