Fusion determiner July 2016 Hold your finger up half way between the screen and your eyes. Focus on your finger—if you see two fingers, bring them together—then the 2 images behind will merge into 1 stereoscopic image (of 3 images inline). The (C) in the central image appears closer than the (D), confirming that you are in convergence fusion. When the (D) is closer than the (C) you are in divergence fusion. To get your eyes into divergence fusion, put the image halfway between your eyes and your finger (You may find this less easy)—print the image, cut it out, and work away from the computer—focus on vertical objects (e.g. metal poles) various distances beyond the printed image-pair. What's neat about this image is it can be flipped, mirrored, and rotated, and retain its functionality. The next category goes through steps to detect and measure cyclotropia.
Once you've mastered fusion, this further test determines if, and by how much, your eyes are cyclotropic 2016 the image above is a snapshot of the original SVG document which is interactive. For now, put the image above into convergence fusion, and then divergence fusion. The blue and yellow colored spokes should overlap, blending their colors to appear green. If the blue spokes stay square, and the yellow ones skew, your left eye is rotated. Knowing that left is yellow, and right is blue, you can move the images to align with your eyes. The image pair can be resized, their depth inverted, each image can be rotated, on its own axis, or on the other's, and likewise they can be moved around without rotation. If you have no difficulty with fusion of the original title image, look no further. If you do have rotation, and want to alter the image attitudes, here is the SVG document for fine tuning. Click on any component (and even the spaces between components) to manipulate the relationship between the 2 images. Overall rotation is the absolute sum in degrees of the two rotations, e.g. left rotation = -3°, right = 2°, total = 5°. Head-tilt can be detected with wearing pinholes.
Beyond cyclotropia—an exposure to violent contrasts 2016, an education in refraction, beginning with training wheels, later fitted into frames, with experimental rejects along the way, ends with this verticalized series of columns and blackout zones centered to pupillary distance—used for exercises: correcting head tilt; fusing between columns; moving images from vision to memory and back; tilting head 30o, etc.. At worst, a poor man's diagnostic tool: a tiny foveal black circle appears during stressful days; eye floaters appear like an olive oil slick (thick and chained, or tiny loose bubbles) following sudden agitation, slowly descending, indicating retina fragmentation, as with (onset) Alzheimer's. Note Initial wearing of pinholes causes eye fatigue. Warning! Do not drive wearing pinholes. Warning! Do not cross the street alone wearing pinholes.
Fly press punch tool imprint early 1980s made by 5 cutting components: 3 round studs, a long hand, and a short hand. Start by inserting a cut strip of ABS (the red piece of plastic shown) from the Right side until under the 3 studs. Cycle the press (bring the cutter down) to make 3 holes. Advance the strip (to the Right), placing the locating hole (the odd-one-out on the plastic strip—the one that doesn't become a hole in either clock hand) over the locating pin, cycle the press again, and voilą!, you've made a small hand (it appears at your feet), again, move the new odd hole Right onto the pin and, this cycle (and subsequent) cuts you a large and a small hand and 3 little round useless bits. Make an equivalent amount of yellow hands, and you have the prescribed alternately-colored large and small hand pairs, and, intentionally, the least amount of plastic waste.
The genesis of repeating background patterns used on pages here from a painting 1987 of the FORTH programming language logo.