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Marylin Hamilton (born 1949) is an American inventor, athlete, and entrepreneur, known as the co-founder of Quickie Wheelchairs. After a 1978 hang-gliding accident left her paraplegic, Hamilton sought to improve wheelchair design, co-creating the lightweight and customizable Quickie wheelchair in 1980 with Jim Okamoto and Don Helman.
Interface Region Imaging Spectrograph (IRIS), [1] also called Explorer 94 and SMEX-12, [2] is a NASA solar observation satellite. The mission was funded through the Small Explorer program to investigate the physical conditions of the solar limb, particularly the interface region made up of the chromosphere and transition region .
An infrared interferometer spectrometer and radiometer (IRIS) is a scientific instrument of the Voyager space probes which enables the measurement of three distinct properties. The instrument itself consists of two separate instruments that together share a single large-aperture telescope system.
Reclining or tilt-in-space wheelchairs have seating surfaces that can be tilted to various angles. The original concept was developed by an orthotist, Hugh Barclay, who worked with disabled children and observed that postural deformities such as scoliosis could be supported or partially corrected by allowing the wheelchair user to relax in a ...
Psychophysics experiments have shown that relative orientations between 0 deg and about 50 deg produce repulsion effects (the test line or grating tends to rotate away from the contextual stimulus), which is known as the direct form of the tilt effect; but larger relative orientations up to 90 deg produce attraction effects (the test line or ...
A motorized wheelchair, powerchair, electric wheelchair, or electric-powered wheelchair (EPW) is a wheelchair that is propelled by means of an electric motor (usually using differential steering) rather than manual power. Motorized wheelchairs are useful for those unable to propel a manual wheelchair or who may need to use a wheelchair for ...
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