visual threshold

(redirected from minimum light)

vis·u·al thresh·old

, threshold of visual sensation
the minimal light intensity evoking a visual sensation.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Summary: It is always best to spot stellar shows in areas with minimum light pollution, such as the desert.
UT 1 21:22 2 10:18 4 18:10 5 7:07 7 14:59 8 3:56 10 11:48 11 0:45 13 8:36 13 21:34 16 5:25 16 18:22 19 2:14 19 15:11 21 23:03 22 12:00 24 19:52 25 8:49 27 16:40 28 5:38 30 13:29 Algol stays near minimum light, magnitude 3.4 Instead of its normal 2.1, for about two hours.
Houghton recommends comparing the light levels in each space to the code for your city, county or state: "Look at the minimum of light you have to have, then walk around the parking lot, sidewalk and sides of the building with a footcandle meter to see if you're within the codes in regards to minimum light. From there, look at doing other things, like adding controls."
You can shoot crystal-clear images even with minimum light during the night hours.
The uniformity represents the ratio of the average to minimum light level and the average to maximum light level.
A minimum light intensity must be maintained while they are operating, otherwise their curing capacity will be restricted.
Mostly shot at night, cinematographer Murali's work is commendable, particularly in the action sequences with minimum light. Editor Praveen's cuts are becoming sharper with every film and he too contributes greatly to the film's overall experience.
The front camera can also now shoot at minimum light exposure without sacrificing as much of the image quality.
The detection of stroboscopic effect (percent likelihood of detection d, in percent) for rectangular waveforms operated so that the maximum light output is produced 50% of the time and the minimum light output is produced 50% of the time (50% duty cycle), has been described in [7] by the equation
With our beautiful clear skies in Zimbabwe for most of the year and a minimum light pollution in the Zimbabwe bush, astronomy is a great topic for discussion and pupils are taught all the major constellations and how to find their way in the dark.
If visual observers had been able to witness the event they would no doubt have seen the asteroid take on a reddish hue as it approached minimum light. Peter's timing for mid-eclipse, taken from his estimates of the start and end times, was 01:36:25 UT, in full agreement with predictions.
Further research should be conducted to determine minimum light levels needed to impact the circadian systems of those with ADRD and to verify how the estimations presented in Table 1 affect rest/activity patterns in those with ADRD.
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