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2. Autostereogram - Wikipedia

   en.wikipedia.org/wiki/Autostereogram

   The top and bottom images produce a dent or projection depending on whether viewed with cross- () or wall- () eyed vergence. An autostereogram is a two-dimensional (2D) image that can create the optical illusion of a three-dimensional (3D) scene. Autostereograms use only one image to accomplish the effect while normal stereograms require two.

3. Attention restoration theory - Wikipedia

   en.wikipedia.org/wiki/Attention_restoration_theory

   Attention restoration theory (ART) asserts that people can concentrate better after spending time in nature, or even looking at scenes of nature. Natural environments abound with "soft fascinations" which a person can reflect upon in "effortless attention", such as clouds moving across the sky, leaves rustling in a breeze or water bubbling over rocks in a stream.

4. Stereoscopy - Wikipedia

   en.wikipedia.org/wiki/Stereoscopy

   Stereoscopy creates the impression of three-dimensional depth from a pair of two-dimensional images. [5] Human vision, including the perception of depth, is a complex process, which only begins with the acquisition of visual information taken in through the eyes; much processing ensues within the brain, as it strives to make sense of the raw information.

5. George M. Stratton - Wikipedia

   en.wikipedia.org/wiki/George_M._Stratton

   Knight Dunlap. Olga Bridgman. George Malcolm Stratton (September 26, 1865 – October 8, 1957) was an American psychologist who pioneered the study of perception in vision by wearing special glasses which inverted images up and down and left and right. He studied under one of the founders of modern psychology, Wilhelm Wundt, and started one of ...

6. Cyclopean image - Wikipedia

   en.wikipedia.org/wiki/Cyclopean_image

   Cyclopean image is a single mental image of a scene created by the brain through the process of combining two images received from both eyes. The mental process behind the Cyclopean image is crucial to stereo vision. [1] Autostereograms take advantage of this process in order to trick the brain to form an apparent Cyclopean image from seemingly ...

7. Reticle - Wikipedia

   en.wikipedia.org/wiki/Reticle

   Reticle accessory (PD-8) used in sniper rifles. A reticle, or reticule[1][2] also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope, to provide measurement references during visual ...

8. Autokinetic effect - Wikipedia

   en.wikipedia.org/wiki/Autokinetic_effect

   The autokinetic effect (also referred to as autokinesis and the autokinetic illusion) is a phenomenon of visual perception in which a stationary, small point of light in an otherwise dark or featureless environment appears to move. [1] It was first recorded in 1799 by Alexander von Humboldt who observed illusory movement of a star in a dark sky ...

9. Oscilloscope - Wikipedia

   en.wikipedia.org/wiki/Oscilloscope

   Modern digital oscilloscopes set the measurement parameters and calculate/display the signal values automatically. An oscilloscope (informally scope or O-scope) is a type of electronic test instrument that graphically displays varying voltages of one or more signals as a function of time.