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Total record count: 6269.

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Eng ID Term Definition
2801
light: continuous very quick
A light showing 80 to 159, usually either 100 or 120, flashes per minute.
2802
light: dioptric
A LIGHT concentrated into a parallel BEAM by means of refracting LENSES and prisms (as opposed to CATOPTRIC).
2803
light: direction (or directional)
A LIGHT illuminat­ing a sector of very narrow angle and intended to mark a DIRECTION to be followed.
2804
light: equal-interval
A LIGHT with all durations of light and darkness equal. The term 'equal-interval light' has been replaced byisophase light in many countries... more
A LIGHT with all durations of light and darkness equal. The term 'equal-interval light' has been replaced byisophase light in many countries.
2805
light: fixed
A signal light that shows continuously, in any given direction, with constant luminous intensity and colour.
2806
light: fixed and flashing
A rhythmic light in which a fixed light is combined with a flashing light of higher luminous intensity.
2807
light: fixed and group-flashing
A FIXED LIGHT varied at regular intervals by a GROUP of two or more flashes of greater bril­liance. This CHARACTER is being gradually suppre... more
A FIXED LIGHT varied at regular intervals by a GROUP of two or more flashes of greater bril­liance. This CHARACTER is being gradually suppressed.
2808
light: flashing
A rhythmic LIGHT in which the total duration of light in a PERIOD is clearly shorter than the total duration of darkness and all the appeara... more
A rhythmic LIGHT in which the total duration of light in a PERIOD is clearly shorter than the total duration of darkness and all the appearan­ces of light are of equal duration.
2809
light: front
See LIGHT(S): RANGE.
2810
light: group-flashing
A flashing LIGHT in which a group of two or more flashes, which are specified in number, is regularly repeated.
2811
light: group-occulting
An occulting LIGHT in which a group of two or more eclipses, which are specified in number, is regularly repeated.
2812
light: group quick
A light in which flashes are combi­ned in groups including the same number of quick flashes (repetition rate : 50-79 per minute) and in whic... more
A light in which flashes are combi­ned in groups including the same number of quick flashes (repetition rate : 50-79 per minute) and in which groups are repeated at regular intervals.
2813
light: group very quick
A light in which very quick flashes are combined in groups including the same number of flashes (repetition rate : 80-159 per minu­te) and i... more
A light in which very quick flashes are combined in groups including the same number of flashes (repetition rate : 80-159 per minu­te) and in which groups are repeated at regular inter­vals.
2814
light: intermittent
See LIGHT: RHYTHMIC.
2815
light: interrupted quick-flashing
A quick LIGHT in which the sequence of flashes is interrupted by regu­larly repeated ECLIPSES of constant and long dura­tion.
2816
light: interrupted ultra quick
A light in which the ultra quick flashes (160 or more per minute) are interrupted at regular intervals by eclipses of long duration.
2817
light: interrupted very quick
A light in which the very rapid alterations of light and darkness are interrup­ted at regular intervals by eclipses of long duration.
2818
light: isophase
See LIGHT: EQUAL-INTERVAL.
2819
light(s): leading
Two or more LIGHTS associated so as to form a LEADING LINE to be followed.
2820
light: linear
A luminous SIGNAL having perceptible length, as contrasted with a POINT LIGHT.