Betekenis van:
light intensity

Voorbeeldzinnen

1. An independent, fixed-intensity warning light.
2. Mandatory. An independent, fixed-intensity warning light.
3. The lamp shall comply with the minimum intensity required when any one light source has failed.
4. The feeding frequency should be related to environmental conditions, such as temperature and light intensity.
5. (For light-measuring instruments calibrated in lux, an equivalent range of 4440-8880 lux for cool white light corresponds approximately to the recommended light intensity 60-120 µE·m–2·s–1). The light intensity shall not vary more than ±15 % from the average light intensity over the incubation area.
6. the point sources of light-emitting-diode systems shall have a minimum peak intensity of 35 mcd.
7. Light intensity should be measured in the growth chamber, incubator or room at points the same distance from the light source as the Lemna fronds.
8. Strains of algae and cyanobacteria vary in their light requirements. The light intensity should be selected to suit the test organism used.
9. For such species an average light intensity in the range 40-60 µE·m–2·s–1 should be selected. (For light-measuring instruments calibrated in lux, an equivalent range of 4440-8880 lux for cool white light corresponds approximately to the recommended light intensity 60-120 µE·m–2·s–1).
10. Nevertheless, for animals without access to outdoor enclosures, areas with high intensities of light similar to daylight should be provided. The light spectrum should resemble daylight even though the light intensity need not be that of bright sunshine.
11. These include providing alternative pecking substrates such as foraging substrate, bunches of string, pecking blocks or straw; providing visual barriers; periodically or temporarily lowering the light intensity or using red light; and using light sources that emit UV rays.
12. A randomised design for location of the test vessels in the incubator is required to minimise the influence of spatial differences in light intensity or temperature.
13. ‘Variable intensity control’ means the device which automatically controls rear light signalling devices producing variable luminous intensities to assure the unvarying perception of their signals.
14. The irradiation (light intensity) should be in the highest end of the range prescribed in this Testing Method: 120µE m-2 s-1 or higher.
15. Rear direction indicator lamps, rear position lamps, stop lamps (except stop lamps of category S4) and rear fog lamps with variable luminous intensity control are allowed, which respond simultaneously to at least one of the following external influences: ambient lighting, fog, snowfall, rain, spray, dust clouds, contamination of the light emitting surface, provided that their prescribed intensity relationship is maintained throughout variation transitions. No sharp variation of intensity shall be observed during transition.