Definition of Focal. Meaning of Focal. Synonyms of Focal

Here you will find one or more explanations in English for the word Focal. Also in the bottom left of the page several parts of wikipedia pages related to the word Focal and, of course, Focal synonyms and on the right images related to the word Focal.

Definition of Focal

Focal
Focal Fo"cal, a. [Cf. F. focal. See Focus.] Belonging to,or concerning, a focus; as, a focal point. Focal distance, or length, of a lens or mirror (Opt.), the distance of the focus from the surface of the lens or mirror, or more exactly, in the case of a lens, from its optical center. Focal distance of a telescope, the distance of the image of an object from the object glass.

Meaning of Focal from wikipedia

- up focal in Wiktionary, the free dictionary. Focal or FOCAL may refer to: Focal (lexicographical website), an Irish lexicographical website FOCAL (programming...
- display of uppercase letters, digits, and a few punctuation characters (the FOCAL character set), some designs needed to be twisted arbitrarily (e.g. to distinguish...
- The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power...
- up focal point in Wiktionary, the free dictionary. Focal point may refer to: Focus (optics) Focus (geometry) Conjugate points, also called focal points...
- Focal seizures (also called partial seizures and localized seizures) are seizures which affect initially only one hemisphere of the brain. The brain is...
- Focal dystonia, also called focal task-specific dystonia, is a neurological condition that affects a muscle or group of muscles in a specific part of...
- A varifocal lens is a camera lens with variable focal length in which focus changes as focal length (and magnification) changes, as compared to a parfocal...
- Focal Press is a publisher of creative and applied media books and it is an imprint of Routledge/Taylor & Francis. The firm was founded in London in 1938...
- located on the optical axis of a rotationally symmetric, focal, optical system. These are the focal points, the prin****l points, and the nodal points; there...
- Focal neurologic signs also known as focal neurological deficits or focal CNS signs are impairments of nerve, spinal cord, or brain function that affects...