Focus

FOCUS

-noun

1. a point of convergence of light or other electromagnetic radiation, particles, sound waves, etc., or a point from which they appear to diverge

2. another name for focal point, focal length

3. (optics) . the state of an optical image when it is distinct and clearly defined or the state of an instrument producing this image

4. a point upon which attention, activity, etc., is directed or concentrated

5.( geometry) . a fixed reference point on the concave side of a conic section, used when defining its eccentricity

6. the point beneath the earth's surface at which an earthquake or underground nuclear explosion originates

7. (pathology) . the main site of an infection or a localized region of diseased tissue

-verb

8. to bring or come to a focus or into focus

9. (trans. ; often followed by “on”) . to fix attention (on); concentrate

A point of convergence

Defining our eccentricity

By its colour and shape

A distinct focus

Slightly blurred by grain

Particles movement