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60° Trisection Goes Big!

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Magnified Details of the 60° Trisection— I found a way to trisect a 60° angle with euclidean construction simulated on a computer using GeoGebra's interactive geometry software. The software allows a user to zoom into the construction and create minute structures, which under the rules, any size is acceptable. GeoGebra's drawing board displays Cartesian coordinates, which in the following examples were defined as centimeters to provide a sense of scale. The original objective of the construction was to define length disparity from one third of the primary angle's chord to that of its arc, which also defines the angle. The construction employs a sequence of three linear thirds to reach the goal.  With the 60° primary angle having a base width and arc radius of 14 cm, the construction culminates with operations executed within a cluster of three intersections grouped smaller than a single E coli bacterium, an estimated size of 2.5 microns. If this construction were drafted...
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The Impossible Trisection

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60° TRISECTION MADE POSSIBLE.  The chasm between 60° and 20° angles was thought to be so wide that after two millennia of failing to bridge it, euclidean angle trisection was finally written off by mathematical theory back in the 1830s. The claim was that trisection had been solved by proving it was mathematically impossible. But many trisection diehards soldiered on, and those who assailed mathematicians with drawings were routinely dismissed out-of-hand. Despite its deep influence on mathematics, no one would take the question of trisection seriously again.  I became one of those diehards. I couldn't agree that even the most rigorous mathematics could account for all the variables or prove impossibility. So I toiled on the problem and thought I'd nailed it a few years ago, but was off by a few hundredths of a degree after testing with better software. Through the process, I'd grown to appreciate geometry and persisted, this time using GeoGebra's interactive geometry s...
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Bird Shots

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 A handful of birds in the bush around Oregon:   Sooty Fox Sparrow, 1/320sec f/9 ISO400, Olympus 100-400 at 400mm Spotted Towhee, 1/320sec f/8 ISO200, Olympus 75-300 at 300mm American Robin, 1/50sec f/8 ISO 400, Olympus 100-400 at 400mm White Crowned Sparrow, 1/320sec f/8 ISO400, Olympus 100-400 at 400mm   Red-winged Blackbird, 1/320sec f/8, ISO 400, Olympus 100-400 at 400mm A ruffled European Starling, 1/250sec f/6.3, ISO 500, Olympus 100-400 at 400mm Great Blue Heron, 1/1000sec f/2.8 ISO200, Olympus 45mm f/1.8  Olympus OM-D EM-1 Mark II with the Olympus M.Zuiko ED 100-400mm f/5-6.3 IS lens. A grip attached to the lens tripod collar helps steady the camera and improves handling. An OpTech wrist strap is mounted clear of the controls on a camera-specific Arca-type base.   All images are original works by the author ©2023
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Flower Power at Al's

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观音因在那里种花而被逐出地狱。 Guan Yin was kicked out of hell for planting flowers there. I usually take my camera to Al's Garden & Home in Woodburn, Oregon, and visit the flowers while we shop. Flowers hold a special fascination for me, with their mysterious variations of color, form, scent—flowers epitomize the Life Force and are its treasure. Along with the Olympus M.Zuiko Digital ED 60mm f/2.8 Macro, my mainstay flower lens, I brought the Olympus M.Zuiko ED 12-100 f/4 IS PRO travel zoom to see how it would do. While the zoom feature of the 12-100 is nice to use and the lens has legendary image quality and a ~1:3 closeup ratio, it just wasn't a substitute for the macro. So after a few shots, the travel lens was put away.  Like an old friend, the 60mm f/2.8 Macro never lets me down. I had a copy back in the original E-M5 days, but eBayed it when I had to have the latest-and-greatest, very excellent Sony 90mm Macro to go onto the full-frame A7RII that had pushed its way into the camera...
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Diffraction Iridescence

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"Truth may best be found at the cusp, where waves crash and colorful pebbles wash ashore."    This study began as a deep dive into image degradation due to small aperture diffraction. When the ragged edge of raw light was explored through long-extension macro imaging, these astonishing colors appeared. At the Edge of Light: Macro image of 0.01" (0.254mm) graduations on a stainless steel machinist rule (inset at lower left corner). 10.66:1 macro ratio on Olympus OM-D E-M1II using 38mm f/2.8 OM Auto-Macro 1/8sec f/2.8 ISO320 w/ 405mm bellows. Not noise, but colorful diffraction iridescence coaxed from the metal's fine granular surface. The magnified ring is approximately 0.004" (0.1mm or 100,000nm) on the ruler.    An Iridescent Penny Saved: Macro image of 2022 US One Cent adjacent to the date numerals. Olympus OM-D E-M1II using 38mm f/2.8 OM Zuiko Auto-Macro 1/2sec f/2.8 ISO320 w/ 412mm Bellows, 10.8:1 macro ratio on original M4/3 image. Note the colorful, Air...
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