low-intensity light

low-intensity light

A runway or threshold light from which the light distribution through 360° of azimuth and a selected 6° in the vertical is not less than 10 candlepower in white light.
References in periodicals archive ?
In human beings, the circadian rhythm benefits from low-intensity light in the morning and high-intensity light in the evening.
This is because the darker green comes from extra chlorophyll B - showing that the plant has adapted to capture more low-intensity light, allowing it to survive in shadier places.
For typical schedules, warm low-intensity light should begin and end the day, with the coolest and brightest intensity occurring midday.
The percentage of calling females at any given time in the scotophase remained the highest in the low-intensity light (0.5 lux) treatment.
In low-intensity light (0.5 lux), the onset time of calling was the earliest ([F.sub.3,98] = 13.506, P < 0.001), the mean duration of calling was the longest ([F.sub.3,98] = 22.682, P < 0.001), and the mean number of calling bouts was the largest ([F.sub.3,152] = 25.324, P < 0.001).
The pheromone titer in low-intensity light (0.5 lux) increased dramatically after the beginning of the scotophase, peaked 4 h later, remained at this level for 3 h, and then decreased stably for the remainder of the scotophase ([F.sub.7,72] = 18.969, P < 0.001), which showed a similar temporal pattern to that in the dark ([F.sub.7,72] = 23.200, P < 0.001).
At 1 h into the scotophase, the incidence of mating was significantly higher in low-intensity light (0.5 lux) than under darkness (0.0 lux), indicating low-intensity light could promote mating in a shorter amount of time (1 h) than under darkness (1 h: [F.sub.3,32] = 14.258, P < 0.001).
assulta calling was inhibited in high-intensity light (50.0 lux), whereas calling behavior was the most frequent in low-intensity light (0.5 lux) based on the record of the calling parameters.
We did not find that low-intensity light (0.5 lux) could promote sex pheromone production more than darkness.
As the sorters discarded defective cherries from among hundreds passing by each minute, cool white fluorescent bulbs emitted low-intensity light that also reflected from white uniforms, a white conveyor belt, and stainless steel tables.
The low-intensity lights were 0.32 cd for red and green and 0.96 cd for yellow, which are the 4-m equivalent of the 200-mm traffic signal at 100 m, complying with the minimum AS/NZS2144:2002 requirements.
Using low-intensity lights for small plants, or stronger, more expensive lights for larger ones, you can induce heavy winter flowering in everything from orchids to African violets.

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