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2. BDA (TSA program) - Wikipedia

   en.wikipedia.org/wiki/BDA_(TSA_program)

   BDA (TSA program) Behavior Detection and Analysis ( BDA ), until 2016 called Screening of Passengers by Observation Techniques ( SPOT ), is a program launched in the United States by the Transportation Security Administration to identify potential terrorists among people at an airport by a set of 94 objective criteria, all of which are signs ...

3. Spot analysis - Wikipedia

   en.wikipedia.org/wiki/Spot_analysis

   Spot analysis, spot test analysis, or spot test is a chemical test, a simple and efficient technique where analytic assays are executed in only one, or a few drops, of a chemical solution, preferably in a great piece of filter paper, without using any sophisticated instrumentation. The development and popularization of the test is credited to ...

4. Spot test (lichen) - Wikipedia

   en.wikipedia.org/wiki/Spot_test_(lichen)

   A spot test in lichenology is a spot analysis used to help identify lichens. It is performed by placing a drop of a chemical reagent on different parts of the lichen and noting the colour change (or lack thereof) associated with application of the chemical. The tests are routinely encountered in dichotomous keys for lichen species, and they ...

5. Interactive whiteboard - Wikipedia

   en.wikipedia.org/wiki/Interactive_whiteboard

   An interactive whiteboard ( IWB ), also known as interactive board, interactive display, interactive digital board or smart board, is a large interactive display board in the form factor of a whiteboard. It can either be a standalone touchscreen computer used independently to perform tasks and operations, or a connectable apparatus used as a ...

6. Low-energy electron diffraction - Wikipedia

   en.wikipedia.org/wiki/Low-energy_electron...

   Low-energy electron diffraction ( LEED) is a technique for the determination of the surface structure of single-crystalline materials by bombardment with a collimated beam of low-energy electrons (30–200 eV) [ 1] and observation of diffracted electrons as spots on a fluorescent screen.

7. Blind spot analysis - Wikipedia

   en.wikipedia.org/?title=Blind_spot_analysis&...

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8. Spot test - Wikipedia

   en.wikipedia.org/?title=Spot_test&redirect=no

   Download as PDF; Printable version; From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Spot analysis; Retrieved from " ...

9. Arago spot - Wikipedia

   en.wikipedia.org/wiki/Arago_spot

   Notation for calculating the wave amplitude at point P 1 from a spherical point source at P 0.. At the heart of Fresnel's wave theory is the Huygens–Fresnel principle, which states that every unobstructed point of a wavefront becomes the source of a secondary spherical wavelet and that the amplitude of the optical field E at a point on the screen is given by the superposition of all those ...