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Topics referred to by the same term
up focal in Wiktionary, the free dictionary. Focal or FOCAL may refer to: Focal (lexicographical website), an Irish lexicographical website FOCAL (programming
Focal
Hewlett-Packard handheld RPN calculator
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
HP-41C
Measure of how strongly an optical system converges or diverges light
between the lens and its focal points. A positive focal length indicates that a system converges light, while a negative focal length indicates that the
Focal_length
Topics referred to by the same term
up focal point in Wiktionary, the free dictionary. Focal point may refer to: Focus (optics) Focus (geometry) Conjugate points, also called focal points
Focal_point
Seizures which affect only one brain hemisphere
Focal seizures are seizures that originate within brain networks limited to one hemisphere of the brain. In most cases, each seizure type has a consistent
Focal_seizure
Nerve disorder affecting certain muscle(s) during specific activities
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
Focal_dystonia
Property of a lens mount system
the flange focal distance (FFD) (also known as the flange-to-film distance, flange focal depth, flange back distance (FBD), flange focal length (FFL)
Flange_focal_distance
Measure of lens speed
ratio of the system's focal length to the diameter of the entrance pupil ("clear aperture"). The f-number is also known as the focal ratio, f-ratio, or f-stop
F-number
Optical device used with a camera to create images
fixed to a camera, or it might be interchangeable with lenses of different focal lengths, apertures, and other properties. While in principle a simple convex
Camera_lens
French company specializing in audio equipment
Focal-JMlab is a French company that has been designing and selling high fidelity audio systems since 1979. Based in Saint-Étienne, the company manufactures
Focal-JMLab
Impairments in nervous system function affecting a specific region of the body
Focal neurologic signs, also known as focal neurological deficits or focal CNS signs, are impairments of nerve, spinal cord, or brain function that affects
Focal_neurologic_signs
Focal Skills (or The Focal Skills Approach) refers to a specific non-traditional program design and assessment regime that purposely structures intensive
Focal_Skills
Programming language used on DEC PDP-series machines
FOCAL (acronym for Formulating On-line Calculations in Algebraic Language, or FOrmula CALculator) is an interactive interpreted programming language based
FOCAL_(programming_language)
Concept in game theory
In game theory, a focal point (or Schelling point) is a solution that people tend to choose by default in the absence of communication in order to avoid
Focal_point_(game_theory)
Criminological theory
In criminology, the focal concerns theory, posited in 1962 by Walter B. Miller, attempts to explain the behavior of "members of adolescent street corner
Focal_concerns_theory
Proposed space telescope
FOCAL (an acronym for Fast Outgoing Cyclopean Astronomical Lens) is a proposed space telescope that would use the Sun as a gravity lens. The gravitational
FOCAL_(spacecraft)
Medical condition
Focal and diffuse brain injury are ways to classify brain injury: focal injury occurs in a specific location, while diffuse injury occurs over a more
Focal and diffuse brain injury
Focal_and_diffuse_brain_injury
Archaic theory of chronic disease
Focal infection theory is the historical concept that many chronic diseases, including systemic and common ones, are caused by focal infections. A focal
Focal_infection_theory
Process that generates seismic waves in an earthquake
The focal mechanism of an earthquake describes the deformation in the source region that generates the seismic waves. In the case of a fault-related event
Focal_mechanism
Book publisher
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
Focal_Press
Six points which determine imaging properties of an optical system
located on the optical axis of a rotationally symmetric, focal, optical system. These are the focal points, the principal points, and the nodal points; there
Cardinal_point_(optics)
Mechanism that controls the exposure time in cameras
In camera design, a focal-plane shutter (FPS) is a type of photographic shutter that is positioned immediately in front of the focal plane of the camera
Focal-plane_shutter
Kidney disease
Focal segmental glomerulosclerosis (FSGS) is a histopathologic finding of scarring (sclerosis) of glomeruli and damage to renal podocytes. This process
Focal segmental glomerulosclerosis
Focal_segmental_glomerulosclerosis
Point at which light rays converge
sometimes defined using a "circle of confusion" criterion. A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror
Focus_(optics)
Structures which transmit force and signals between a cell and the extracellular matrix
Focal adhesions (FAs) also cell–matrix adhesions are large multiprotein complexes through which mechanical force and regulatory signals are transmitted
Focal_adhesion
Optical device which transmits and refracts light
different radii of curvature in two orthogonal planes. They have a different focal power in different meridians. This forms an astigmatic lens. An example
Lens
Chronic lung condition
are also a number of associated conditions, including bullous emphysema, focal emphysema, and Ritalin lung. Only the first two types of emphysema – centrilobular
Emphysema
Failure of certain neurons to migrate during brain development
migrate in the proper formation in utero. Focal means that it is limited to a focal zone in any lobe. Focal cortical dysplasia is a common cause of intractable
Focal_cortical_dysplasia
Excessive sweating in certain body regions
Focal hyperhidrosis, also known as primary hyperhidrosis, is a disease characterized by an excessive sweating localized in certain body regions (particularly
Focal_hyperhidrosis
Non-language factors that enhance understanding of communication
anthropology, context refers to those objects or entities which surround a focal event, in these disciplines typically a communicative event, of some kind
Context
Camera setup
In photography, the 35 mm equivalent focal length is a measure of the angle of view for a particular combination of a camera lens and film or image sensor
35_mm_equivalent_focal_length
Benign tumor of the liver
Focal nodular hyperplasia is a benign tumor of the liver (hepatic tumor), which is the second most prevalent tumor of the liver after hepatic hemangioma
Focal_nodular_hyperplasia
Theorem describing fusion of elements in Sylow subgroup of finite group
abstract algebra, the focal subgroup theorem describes the fusion of elements in a Sylow subgroup of a finite group. The focal subgroup theorem was introduced
Focal_subgroup_theorem
Type of camera lens
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
Varifocal_lens
Focal spot blooming is the unwanted change in the focal spot size of an X-ray tube during change in exposure. Focal spot blooming is caused due to increased
Focal_spot_blooming
Medical condition
Linear focal elastosis or elastotic striae is a skin condition that presents with asymptomatic, palpable or atrophic, yellow lines of the middle and lower
Linear_focal_elastosis
Degree to which an optical system converges or diverges light
optics, optical power (also referred to as dioptric power, refractive power, focal power, focusing power, or convergence power) is the degree to which a lens
Optical_power
Image sensor made of light-sensing pixels
staring-plane array or focal-plane array (FPA), is an image sensor consisting of an array (typically rectangular) of light-sensing pixels at the focal plane of a
Staring_array
Distance between the nearest and the furthest objects that are in focus in an image
called the "circle of confusion". The depth of field can be determined by focal length, distance to subject (object to be imaged), the acceptable circle
Depth_of_field
University of Limerick student newspaper
An Focal is the University of Limerick's only student newspaper, run by the University of Limerick Students' Union. The newspaper was first published
An_Focal
Multiplier factor in digital imaging, compared to 35mm film camera focal length
In digital photography, the crop factor, format factor, or focal length multiplier of an image sensor format is the ratio of the dimensions of a camera's
Crop_factor
Rare neurological inflammatory disease
autoimmune neurological disease. It is characterized by frequent and severe focal seizures, progressive neurological decline, hemiparesis (weakness on one
Rasmussen_syndrome
Camera lens with fixed focal length
In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f/2
Prime_lens
Medical condition
Focal dermal hypoplasia is a form of ectodermal dysplasia. It is a multisystem disorder characterized primarily by skin manifestations to the atrophic
Focal_dermal_hypoplasia
Model of 3D points projected onto planar image via a lens-less aperture
their distance to the focal point and the overall size of the image depends on the distance f between the image plane and the focal point. In order to produce
Pinhole_camera_model
Lens with a variable focal length
camera lens elements for which the focal length (and thus angle of view) can be varied, as opposed to a fixed-focal-length (FFL) lens (prime lens). A true
Zoom_lens
Portfolio management and decision analysis tool
UNICOM Focal Point is a portfolio management and decision analysis tool used by the product organizations of corporations and government agencies to collect
Unicom_Focal_Point
A focal point review (FPR) is a human resources process for employee evaluation. "Focal Point Review—FPR". Public and Commercial Services Union. Retrieved
Focal_point_review
Concept in sociology
Primary socialization in sociology is the period early in a person's life during which they initially learn and develop themselves through experiences
Primary_socialization
Aspect of a lens or reflector
A focal cloud is the collection of focal points of an imperfect lens or parabolic reflector whether optical, electrostatic or electromagnetic. This includes
Focal_cloud
For a surface in three dimension the focal surface, surface of centers or evolute is formed by taking the centers of the curvature spheres, which are
Focal_surface
Curve from a cone intersecting a plane
passing through a focus; its half-length is the semi-latus rectum (ℓ). The focal parameter (p) is the distance from a focus to the corresponding directrix
Conic_section
Protein-coding gene in humans
(PTK2), also known as focal adhesion kinase (FAK), is a protein that, in humans, is encoded by the PTK2 gene. PTK2 is a focal adhesion-associated protein
PTK2
Character meant to be the audience's focus
In any narrative, the focal character is the character on whom the audience is meant to place the majority of their interest and attention. They are almost
Focal_character
Focal molography ("molography" in short) is a biophysical method for robust and sensitive detection of biomolecular interactions in a label-free manner
Focal_molography
Imaging technique using moving X-ray machines
In radiography, focal plane tomography is tomography (imaging a single plane, or slice, of an object) by simultaneously moving the X-ray generator and
Focal_plane_tomography
Type of camera lens with long focal length
the focal length of that lens. For example, given a focal length of 500 mm, the distance between lens and focal plane is 500 mm. The farther the focal length
Telephoto_lens
Eye disease characterized by concavity of the choroid
Focal choroidal excavation (FCE) is a concavity in the choroidal layer of the eye that can be detected by optical coherence tomography. The disease is
Focal_choroidal_excavation
Set of words
thematic groups. The Swadesh list was made for investigation in linguistics. Focal vocabulary is a specialized set of terms and distinctions that is particularly
Vocabulary
American musician (born 1979)
short-lived Sacramento/Elk Grove, California-based hardcore punk band Focal Point. Focal Point started in 1995 with the lineup of Clark, Robbie Imrisek (Vocals)
Ryan_Clark_(musician)
British hi-fi manufacturer
founded in 1973. Following a 2011 merger with French loudspeaker manufacturer Focal, Naim is owned by VerVent Audio Group. Naim began when Julian Vereker started
Naim_Audio
Abnormal thickening of skin in the palms or soles
distinct patterns of palmoplantar keratoderma may be identified: diffuse, focal, and punctate. Diffuse palmoplantar keratoderma is a type of palmoplantar
Palmoplantar_keratoderma
Failure of a lens to focus all colors on the same point
wavelength. Since the focal length of a lens depends on the refractive index, this variation in refractive index affects focusing. Since the focal length of the
Chromatic_aberration
Medical condition
"recurrent focal palmar peeling", "recurrent palmar peeling") is a sometimes harmless, sometimes painful skin condition that can affect the focal surface
Keratolysis_exfoliativa
Concept in optics
In optics, a conjugate plane or conjugate focal plane of a given plane P, is the plane P′ such that points on P are imaged on P′. If an object is moved
Conjugate_focal_plane
Optical device for recording images
There are two types of mechanical shutters: the leaf-type shutter and the focal-plane shutter. The leaf-type uses a circular iris diaphragm maintained under
Camera
Art and practice of creating images by recording light
on the other side. He also first understood the relationship between the focal point and the pinhole, and performed early experiments with afterimages
Photography
Period of symptoms due to excessive or synchronous neuronal brain activity
classifications of focal seizures are described below: Focal preserved consciousness seizure: the person remains aware and responsive. Focal impaired consciousness
Seizure
Unit of measurement of optical power
using optical power rather than focal length is that the thin lens formula has the object distance, image distance, and focal length all as reciprocals. Additionally
Dioptre
1976 studio album by McCoy Tyner
Focal Point is a 1976 album by jazz pianist McCoy Tyner, his tenth to be released on the Milestone label. It was recorded during four days in August 1976
Focal_Point_(album)
Trade body representing the film archive industry
FOCAL International is the trade association representing stock footage companies, post-production facilities and individuals involved in the use of footage
FOCAL_International
Type of lens attached to a variety of optical devices such as telescopes and microscopes
on the retina of the eye.) The amount of magnification depends on the focal length of the eyepiece. An eyepiece consists of several "lens elements"
Eyepiece
Eyeglasses with manually adjustable focal length
Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable
Adjustable-focus_eyeglasses
A telecompressor or focal reducer is an optical element used to reduce focal length, increase lens speed, and in some instances improve optical transfer
Telecompressor
Smartphones with the highest optical zoom magnification level
This is a list of smartphones with a telephoto lens that offers a focal length (35 mm equivalent) of at least 100 mm or "4× optical zoom" with an imaging
List of longest smartphone telephoto lenses
List_of_longest_smartphone_telephoto_lenses
Telescope for observations with visible light
commonly referred to as the focal ratio notated as N {\displaystyle N} . The focal ratio of a telescope is defined as the focal length f {\displaystyle f}
Optical_telescope
Type of lens
wide-angle lens is a lens covering a large angle of view. Conversely, its focal length is substantially smaller than that of a normal lens for a given film
Wide-angle_lens
Spheres tangent to a plane inside a cone
of the conic section, so the Dandelin spheres are also sometimes called focal spheres. The Dandelin spheres were discovered in 1822. They are named in
Dandelin_spheres
Medical condition
Focal fatty liver (FFL) is localised or patchy process of lipid accumulation in the liver. It is likely to have different pathogenesis than non-alcoholic
Focal_fatty_liver
Medical condition
Proximal femoral focal deficiency (PFFD), also known as congenital femoral deficiency (CFD), is a rare, non-hereditary birth defect that affects the pelvis
Proximal femoral focal deficiency
Proximal_femoral_focal_deficiency
Medical condition
A Khodadoust line or chronic focal transplant reaction is a medical sign that indicates a complication of corneal graft surgery on the eye. This method
Khodadoust_line
Camera lens with big focal length
In photography, a long-focus lens is a camera lens which has a focal length that is longer than the diagonal measure of the film or sensor that receives
Long-focus_lens
In seismology, the depth of focus or focal depth is the depth at which an earthquake occurs. Earthquakes occurring at a depth of less than 70 km (43 mi)
Depth_of_focus_(tectonics)
The Basin Focal Projects (BFPs) are a set of CGIAR Challenge Program on Water and Food projects aimed at identifying and catalyzing the implementation
Basin_Focal_Projects
Character set used by calculators
In computing FOCAL character set refers to a group of 8-bit single byte character sets introduced by Hewlett-Packard since 1979. It was used in several
FOCAL_character_set
Movement disorder of the hand or forearm
Writer's cramp or focal hand dystonia (FHD) is an idiopathic movement disorder of adult onset, characterized by abnormal posturing and movement of the
Writer's_cramp
Type of photography and cinematography lens
observer. In contrast, depth compression and expansion with shorter or longer focal lengths introduces noticeable, and sometimes disturbing, distortion. Photographic
Normal_lens
Aspect of photography history
the name of their sole model. The Rectaflex was a 35 mm SLR camera with a focal plane shutter, interchangeable lenses, and a pentaprism eye-level finder
History of the single-lens reflex camera
History_of_the_single-lens_reflex_camera
Distortion of an object in photography
differs significantly from what the object would look like with a normal focal length, due to the relative scale of nearby and distant features. Perspective
Perspective_distortion
Medical condition
Focal proliferative nephritis is a type of glomerulonephritis seen in 20% to 35% of cases of lupus nephritis, classified as type III. As the name suggests
Focal_proliferative_nephritis
Angular extent of given scene imaged by camera
{\displaystyle {\frac {180d}{\pi f}}} degrees. The effective focal length is nearly equal to the stated focal length of the lens (F), except in macro photography
Angle_of_view_(photography)
Type of photography aimed at expressing the personality of the human subject(s)
32°. These are the classic portrait lens focal lengths which correspond to approximately 1.5 to 2.5× the focal length of a normal lens. For medium and
Portrait_photography
Press cameras made by Graflex from 1912 to 1973
Pacemaker Crown Graphic, which was one pound [0.45 kg] lighter and lacked the focal plane shutter). Despite the common appellation of Speed Graphic, various
Speed_Graphic
Irish singer-songwriter (born 1949)
of 44, he went on to become a singer-songwriter who wrote the song "Aon Focal Eile" which gained national attention in 1996. Tony Keogh in South East
Richie_Kavanagh
Type of generalized seizure that affects the entire brain
with epilepsy. These seizures typically initiate abruptly with either a focal or generalized onset. A prodrome (a vague sense of impending seizure) may
Generalized tonic–clonic seizure
Generalized_tonic–clonic_seizure
Fictional character in a video game
Archon, Focalors, and that she possesses no powers beyond the curse of immortality, which has left her isolated. By the end of Furina's story, Focalors executes
Furina_(Genshin_Impact)
In mathematics, and especially affine differential geometry, the affine focal set of a smooth submanifold M embedded in a smooth manifold N is the caustic
Affine_focal_set
Pairs of conic sections in geometry
In geometry, focal conics are a pair of curves consisting of either an ellipse and a hyperbola, where the hyperbola is contained in a plane, which is
Focal_conics
Chronic focal seizure disorder
from the temporal lobe. Temporal lobe epilepsy is the most common type of focal onset epilepsy among adults. Seizure symptoms and behavior distinguish seizures
Temporal_lobe_epilepsy
Pin badge to encourage communication in the Irish language
more radical elements to place "Irishness" second to "freedom". As cúpla focal means "a couple of words". The Conradh na Gaeilge website notes that this
Fáinne
FOCAL
FOCAL
FOCAL
FOCAL
Boy/Male
English French
God on high; my God is Jehovah. From a surname derived from a medieval abbreviation of the Greek...
Boy/Male
British, English, Greek
Wealthy Defender; Gift of God
Boy/Male
Indian, Sanskrit
Lord of the Gods; Lord Indra
Girl/Female
Arabic, Australian, Muslim
Jasmine Flower
Boy/Male
French, German, Italian, Latin, Spanish
Gift from God
Girl/Female
Hindu, Indian
Feet of a King
Girl/Female
German
Loves Horses
Boy/Male
Indian, Punjabi, Sikh
Love of Family
Surname or Lastname
English
English : origin uncertain. Perhaps a variant spelling of Weedon.
Biblical
country of Assur or Ashur
FOCAL
FOCAL
FOCAL
FOCAL
FOCAL
n.
A defect of the eye or of a lens, in consequence of which the rays derived from one point are not brought to a single focal point, thus causing imperfect images or indistinctness of vision.
imp. & p. p.
of Focalize
n.
A lens or mirror, usually of short focal distance, used to concentrate light upon an object.
n.
An instrument for measuring the limits of distincts vision in different individuals, and thus determiming the proper focal length of a lens for correcting imperfect sight.
v. t.
To bring to a focus; to focus; to concentrate.
n.
The act of focalizing or bringing to a focus, or the state of being focalized.
p. pr. & vb. n.
of Focalize
a.
Belonging to,or concerning, a focus; as, a focal point.
n.
The reciprocal of the focal distance of a lens, used as measure of the divergence or convergence of a pencil of rays.
a.
Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See Illust. under Lens.
v. t.
To bring to a focus; to focalize; as, to focus a camera.
n.
A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.