night effect


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Related to night effect: Automatic direction finder

night effect

An effect mainly caused by variations in the state of polarization of reflected waves, which sometimes result in errors in direction finding bearings. The effect is most frequent at nightfall.
Dictionary of Military and Associated Terms. US Department of Defense 2005.
References in classic literature ?
It was--how shall I say it?--a night effect when you seem to see vague shapes and don't know what reality you may come upon at any time.
Furthermore, first night effect has been reported to affect schizophrenia patients significantly less (only 35%) than healthy controls (80%) [53].
These environmental changes create a phenomenon known as the "first night effect" [7], which implicates changes in sleep quality and efficiency resulting in inaccurate and unrepresentative results.
In the present study the first night was regarded as control condition; however this may introduce the "first night effect" into the study.
Given that the football players had already been exposed to low altitude (1600 m), this disruption may be attributed to a first night effect as football players relocated to the location of competition and slept in a new bedroom environment.
One study showed that a total dose of 1,845 mg/day of fermented ginseng (three capsules of 205 mg each, three times daily for 8 days) improved the so-called "first night effect" in which sleep in an unfamiliar environment is disturbed.
There are 12 exterior colours, three roof colours and three roof linings including one with 60 LEDs to give a stars at night effect.
For parties, cloak structural plants in fairy lights, and dot about the garden small candles or tea lights in glass jars to protect them from breezes to create a starry night effect.
In addition, although studies have demonstrated a "first night effect" in a sleep laboratory (poor sleep due to being uncomfortable in a new environment) (Scholle et al., 2003), this effect has been understudied in the pediatric literature.
A human study comprising 16 healthy male volunteers aged 21, was conducted to determine whether fermented ginseng (FG) can improve the first night effect (FNE) during sleep recording in a laboratory (Kitaoka 2009).
First night effect for polysomnographic data in children and adolescents with suspected sleep disordered breathing.