optical
31Optical heterodyne detection — is an important special case of heterodyne detection. In heterodyne detection, a signal of interest at some frequency is non linearly mixed with a reference local oscillator (LO) that is set at a close by frequency. The desired outcome is the… …
32Optical mark recognition — (also called Optical Mark Reading and OMR) is the process of capturing human marked data from document forms such as surveys and tests. Contents 1 OMR background 2 OMR software 2.1 Open Source …
33Optical Society — Type Professional organization Founded 1916 Location Washington, DC, United States Origins Founded by optical scientists in 1916 under the leadership of Perley G. Nutting Key people Christopher Dainty (President) …
34Optical disc authoring — Optical discs Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Optical media types …
35Optical power meter — in use An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually… …
36Optical storage — is a term from engineering referring to the storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light, usually a beam of laser light precisely focused on a spinning… …
37Optical IP Switching — (OIS), is a novel method of creating transparent optical connections between network nodes using a flow based approach. An IP flow is a collection of IP packets going from the same source to the same destination: the exchange of IP packets is the …
38Optical transfection — is the process of introducing nucleic acids into cells using light. Typically, a laser is focussed to a diffraction limited spot ( 1 µm diameter) using a high numerical aperture microscope objective. The plasma membrane of a cell is then… …
39Optical sectioning — is the process by which a suitably designed microscope can produce clear images of a focal planes deep within a thick sample. This is used to reduce the need for thin sectioning using instruments such as the microtome. Many different techniques… …
40Optical interferometry — combines two or more light waves in an optical instrument in such a way that interference occurs between them. Early interferometers used white light sources and also monochromatic light from atomic sources (e.g., Young s double slit experiment… …
