Optical
Optical
Optical (pronunciation: /ˈɒptɪkəl/) is an adjective that pertains to or involves light or vision. It is derived from the Greek word "optikos," which means "of sight or seeing."
Definition
Optical refers to anything related to sight or the science of light. It is often used in the context of optical instruments, such as telescopes, microscopes, and cameras, which manipulate light in order to function. In the field of medicine, optical can refer to various tools and procedures that involve the use of light, such as optical coherence tomography or optical microscopy.
Related Terms
- Optics: The branch of physics that studies the properties and behavior of light.
- Optical Coherence Tomography: A non-invasive imaging test that uses light waves to take cross-section pictures of your retina.
- Optical Microscopy: The use of visible light and a series of magnifying lenses to examine small or thinly sliced sections of objects.
- Optical Illusion: An illusion caused by the visual system and characterized by a visual percept that arguably appears to differ from reality.
- Optometrist: A healthcare professional who provides primary vision care.
Etymology
The term "optical" comes from the Greek word "optikos," which means "of sight or seeing." It was first used in English in the late 15th century.
Pronunciation
Optical is pronounced as /ˈɒptɪkəl/.
External links
- Medical encyclopedia article on Optical
- Wikipedia's article - Optical
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