Charles Wheatstone - Optics


Stereopsis was first described by Wheatstone in 1838. In 1840 he was awarded the Royal Medal of the Royal Society for his explanation of binocular vision, a research which led him to make stereoscopic drawings and construct the stereoscope. He showed that our impression of solidity is gained by the combination in the mind of two separate pictures of an object taken by both of our eyes from different points of view. Thus, in the stereoscope, an arrangement of lenses or mirrors, two photographs of the same object taken from different points are so combined as to make the object stand out with a solid aspect. Sir David Brewster improved the stereoscope by dispensing with the mirrors, and bringing it into its existing form with lenses.

The 'pseudoscope' (Wheatstone coined the term from the Greek ψευδίς σκοπειν) was introduced in 1852, and is in some sort the reverse of the stereoscope, since it causes a solid object to seem hollow, and a nearer one to be farther off; thus, a bust appears to be a mask, and a tree growing outside of a window looks as if it were growing inside the room. Its purpose was to test his theory of stereo vision and for investigations into what would now be called experimental psychology.

Read more about this topic:  Charles Wheatstone

Other articles related to "optics":

LAMOST - Optics
... The optics of LAMOST comprise two roughly rectangular mirrors, each made up of a number of 1.1-metre hexagonal deformable segments, providing a focal ... Using active optics technique to control its reflecting corrector makes it a unique astronomical instrument in combining large aperture with wide field of view ...
Applications - Atmospheric Optics
... Mirages are optical phenomena in which light rays are bent due to thermal variations in the refraction index of air, producing displaced or heavily distorted images of distant objects ... Other dramatic optical phenomena associated with this include the Novaya Zemlya effect where the sun appears to rise earlier than predicted with a distorted shape ...
Laser Physics (journal) - Topics Covered
... atoms, molecules, and solids, Coherent phenomena and holography, Nonlinear and quantum optics, Ultrafast optics and strong-field physics, Fiber optics, Surface phenomena, Quantum information and ...
Soliton (optics)
... In optics, the term soliton is used to refer to any optical field that does not change during propagation because of a delicate balance between nonlinear and linear effects in ... often simply referred as "solitons" in optics ...