Definition of focus in English:
noun (plural focuses or foci /ˈfōˌsī, -ˌkī/)
- But combine it with a programme that lacks a clear focus and Cork's year in the cultural spotlight is already looking shaky.
- Once you have a clear focus, gather the right team around you to get the job done.
- But if it keeps a clear focus it might achieve a way forward for our embattled province.
- To be charitable, perhaps his paranoid focus on who'd been criticising Latham obscured his focus.
- Focus on your own feelings and share them with your partner, so you won't lose the focus of your own body.
- I relish the hours when my entire focus isn't concentrated on breathing.
- The geographic point directly above the focus is called the earthquake epicenter.
- This result strongly agrees with the upward migration of seismic foci in the volcanic edifice, which has been found to precede recent flank eruptions.
- There was extensive embolization to the brain and multiple foci of Aspergillus infection in kidneys and adrenal glands.
- An identifiable focus of primary infection should also be addressed when possible.
- The macroscopically apparent thrombosed vessels in case 3 contained tumor emboli and multiple foci of infarction.
- It's only to be expected that most of the pictures are not of the highest quality, often out of focus or a bit blurred.
- When she finally did open them, everything blurred out of focus, then came in clear.
- I'm definitely one of those people who hears most music as a soundtrack to a film going on somewhere in my head, usually deeply out of focus.
- While Zippy has the attention span of a goldfish, his wife has the focus of an electron microscope.
- The probability for such an event occurring is only significant at the plane of focus, where photon flux is the highest.
- Their focus was always upon the general rather than the particular.
- In the Nasmyth focus, an oblong tertiary mirror is positioned in this opening and it reflects the light from the secondary mirror to foci located on either side of the telescope.
- The problems with the microlens array design are low light throughput, non-uniform intensity foci, and lens aberrations.
- There is a central hole in the main mirror through which the light passes and is brought to a focus by an eyepiece lens.
- He adjusts the focus of the Carl Zeiss 120 mm macro lens, which allows him to work very close up.
- These lenses adjust their focus with a patient's eye muscles to give them seamless near or distance vision.
- The focus can be adjusted slightly in order to sharpen up different parts of the image corresponding to objects at different depths in the scene.
- The circumcircle of a triangle formed by three tangents to a parabola, passes through the focus of the parabola.
- The focus and directrix of a parabola were considered by Pappus.
- The catenary is the locus of the focus of a parabola rolling along a straight line.
verb (focuses, focusing, focused or focusses, focussing, focussed)[no object] Back to top
- His blue eyes didn't seem to focus on any one person on the floor below him, but seemed to see all of them without focusing.
- She could only see a blur at first, but her vision focused and she was able to see clearly her surroundings.
- When she was able to focus, she saw two vamps descending on her.
- Feeling distinctly sick, he lay back down and focused his eyes, surveying his surroundings.
- Every few metres the cat stopped and twisted its head around, focussing its yellow eyes on me, checking to see if I was still in pursuit.
- I think some of the brain which attends to focussing my eyes may have leaked out.
- For example, in one puzzle you have to focus a telescope, and to do so you have to add or remove 14 lenses.
- I have written about this many times, but modern auto-focus cameras deliver more ‘out of focus’ shots than manually focussed cameras.
- ‘Just look at me,’ says Juergen, focusing the camera.
- These scatter the sun's rays, and prevent them from being focused together into a single bright point.
- In narrow inlets and coves, the wave can become focused or amplified, reaching tens of metres in height.
- Because gamma rays are hard to focus into sharp images, the science team then used the X-ray telescope on Swift to determine a precise location.
- When a lens system optimally focuses an incoming ray bundle, the spread of passed wavelengths is in focus at a range of points in front of, on, and behind the sensor focal plane.
- When a lens is used to focus the sun's rays onto a piece of paper the distance of the paper from the lens is called the focal length.
- And they were used for starting fires by focusing the rays of the sun.
- It works like your grappling hook did, but instead of string, it uses gravity focused into a ‘beam’ to connect it.
- In that time, the energy had focused and spiked beyond what I have ever felt before.
- Normally a light beam will focus to a point no smaller than about the size of the light's wavelength.
- An objective lens focuses the light onto a region approximately 1 mm in diameter and subsequently collects the light returning from the target.
- The eye has a lens, and even ‘film’ (the retina), which detects light focused by the lens.
- In the simple experiment, a converging lens focuses laser light from two pinholes onto two different photodetectors.
- As his heart started to race, he drew his attention inward, focussing on his breathing.
- The study focussed on a period of time beginning four years before the casino opened and four years after.
- More studies focusing on this particular problem are needed before a conclusion can be drawn.
- He concentrated, focusing his thoughts on the strange impressions he was receiving.
- According to dharma, or divine law, temple worship is important because it focuses our concentration on God.
- The concentration on punishment damages the national debate by focussing all attention on revenge.
mid 17th century (as a term in geometry and physics): from Latin, literally 'domestic hearth'.
In Latin focus meant ‘hearth, fireplace’, and the optical sense of ‘the burning point of a lens’, the point at which rays meet after reflection or refraction, may have developed from this. It was first used in 1604 in Latin in this sense by the German astronomer Johannes Kepler ( 1571–1630). By the beginning of the 18th century the word had appeared in the writings of such eminent figures as the philosopher Thomas Hobbes ( 1588–1679), the scientist Robert Boyle ( 1627–91), and the mathematician and physicist Isaac Newton ( 1643–1727). The focus groups of modern marketing are much more recent, dating from the early 1960s. Latin focus became foyer in French, in the sense ‘hearth’. It came to be used in French for the ‘green-room’ in a theatre, and then for the area that the public could gather in during intervals, a sense first found in English in 1859. See also fuel
- Example sentences
- Along with its atom stream turrets on port and starboard sides there are energy focusers to destroy anything under atmosphere.
- He had two focusers floating on ether side of his head to represent his constant control.
- A helical focuser is located at the rear of the body.
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