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Ramachandran created the mirror box to relieve pain by helping an amputee imagine motor control over a missing limb. Mirror therapy is now also widely used for treatment of motor disorders such as hemiplegia or cerebral palsy. As Deconick et al. state in a 2014 review, the mechanism of improved motor control and pain relief may differ from the ...
Two thirds of the light from the camera lens was let through the mirror, while the rest was reflected up to the viewfinder screen. [4] The Pellix pellicle mirror was an ultra-thin (0.02 mm) Mylar film with a vapour deposited semi reflecting layer. Since there was no mirror blackout, the user could see the image at the moment of exposure. [5]
Light travels through a single lens and a mirror is used to reflect a portion of that light through the viewfinder – hence the name "single-lens reflex". While there are variations among point-and-shoot cameras , the typical design exposes the sensor constantly to the light projected by the lens, allowing the camera's screen to be used as an ...
Virtual reality therapy (VRT) was pioneered and originally termed by Max North documented by the first known publication (Virtual Environment and Psychological Disorders, Max M. North, and Sarah M. North, Electronic Journal of Virtual Culture, 2,4, July 1994), his doctoral VRT dissertation completion in 1995 (began in 1992), and followed with the first known published VRT book in 1996 (Virtual ...
The SLR must employ some method of blocking light from reaching the film during focusing, either with a focal plane shutter (most common) or with the reflex mirror itself. Both methods are mechanically complicated and add significant bulk and weight, especially in medium-format cameras.
The Schmidt camera is a wide-field photographic telescope, with the corrector plate at the center of curvature of the primary mirror, producing an image at a focus inside the tube assembly at the prime focus where a curved film plate or detector is mounted. The relatively thin and lightweight corrector allows Schmidt cameras to be constructed ...
A cross-section (or 'side-view') of the optical components of a typical SLR camera shows how the light passes through the lens assembly, is reflected by the mirror placed at a 45-degree angle, and is projected on the matte focusing screen. Via a condensing lens and internal reflections in the roof pentaprism the image appears in the eyepiece.
Mirrorless interchangeable-lens cameras – these cameras have no mirror between the lens and sensor. All NEX and ILCE models use this technology and feature Sony's E-mount. (In addition to these cameras, Sony also offers E-mount cameras, which are not part of the α line, but the Handycam, NXCAM and XDCAM systems.)
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