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Rayleigh Criterion

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• Diffraction limits resolution. • For a circular aperture, lens, or mirror, the Rayleigh criterion states that two images are just resolvable when the center of the diffraction pattern of one is directly over the first minimum of the diffraction pattern of the other. • This occurs for two point objects separated by the angle θ = 1.22 λ / D, where λ is the wavelength of light (or other electromagnetic radiation) and D is the diameter of the aperture, lens, mirror, etc. This equation also gives the angular spreading of a source of light having a diameter D. From http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/Raylei.html Average vision is 5 × 10⁻⁴ radians or 103.13 arcseconds or a ratio of 1:2000 [1 unit resolvable at 2000 units]

The Ragged Patriot's salute to amazing americans

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A page where any american can go, on one of those dark and dreary days, when the ai bots found the perfect thing to leaves you feeling hopeless and afraid, somehow knowing where to find the buttons normally only family should be able to divine.... these are my counters to those trolls and clockwork\'s dark manipulations, things that i find that can even give me hope and that reminds me every step they take towards blood and ash, the more people are jolted awake and come flocking back (i hope lol)... stay true, stay bright and remember millennials on down, im talking to you, our generations have perfect empathy but we have to remember that not just victims wear shoes but so do the wolves and if we can imagine what its like to be someone else in pain surely we can imagine the perpratrators joy and pretitory nature , surly we can imagine the possibility not everyone is good and one day what might happen if a leader stumbles into power corrupted, with evil in their heart... actions not words are all that matters, and if someones words never stay in one place maybe its time to stop counting on them to be where they say and wake the f UPPPPP!

Ministry of Flight

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THE BEST VIDEOS OF PLANES AT GIBRALTAR INTERNATIONAL AIRPORT. We have the most videos of planes at Gibraltar, more than any other channel. See how unique and extreme Gibraltar International Airport is, by clicking the subscribe button and watching our videos. At Ministry of Flight we focus on bringing the very best content of planes at Gibraltar International Airport. We also focus on information regarding this unique and strategic airfield. Are you planning on flying in to or out of Gibraltar? Would you like to have your flight landing or take-off captured to have as a memory of your trip? Leave us a comment in one of our most recent videos and we will do our best to capture that flight (some flights are out of our scheduled scope, but we will do our best). Other plane related videos as well, but our main focus is on flights and aircraft around Gibraltar. Please subscribe for future awesome plane videos!

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