light hour

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Related to light hour: Light-day
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Noun1.light hour - the distance light travels in a vacuum in one hour; approximately one billion kilometers
astronomy unit - a linear unit used for astronomical distances
light year, light-year - the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
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References in periodicals archive ?
Wild card is Anne Heche drama "Men in Trees," a quiet but charming light hour that may take some time to catch on.
The delay of ovarian maturation in topmouth gudgeon in short photoperiods and absolute darkness or its stimulation when were exposed to long photoperiods (18 to 24 light hours [day.sup.-1]) (Zhu et al., 2014).
The letter came into light hours after Akhilesh claimed detention at Lucknow airport, alleging that it was a move by the Yogi Adityanath-led government to prevent him from attending the programme in the university.
In both trials, the experimental design was completely randomized, with four replicates of 50 seeds, in a 2 x 6 factorial scheme, the first factor being two light conditions (F1 = 12 light hours and F2 = absence of light) and the second factor constituted by six levels of water stress (0; -0.3; -0.6; -0.9; -1.2 and -1.5 MPa in experiment 1 and 0; -0.1; -0.2; -0.3; -0.4; and -0.5 MPa in experiment 2).
"I personally have attended meetings, as long ago as six years, where Sex Workers were discussed openly selling their ware during day light hours on Shiel Road, Newsham Park and surrounding area - a councillor was present.
The row between Berri and Bassil was sparked after a video surfaced Monday of Bassil calling Berri a "thug." Another video came to light hours later showing the foreign minister claiming Berri threatened to close banks helping fund the conference.
laeta, a statistically significant nocturnality accompanied by some degree of activity during the light hours. This is in agreement with the assertion of individuals of other species of spiders which are not purely nocturnal or diurnal (Suter & Benson 2014) and the reported behavior of individuals of the brown recluse spider (L.
The change was made due to reduced day light hours at this time of the year.
Days will shorten by an increasing amount as we get deeper into fall but in some places the days of light hours shorten faster than in others.
On the other hand, ultraviolet radiation (UVR) in sunlight is widely considered to be the most significant causal factor in basal cell carcinoma (BCC), squamous cell carcinoma (SCC) and malignant melanoma (MM) of the skin.7 Effective primary prevention and early detection are the keystones of skin cancer control at a population level, with the focus on behavioural strategies such as regular sun protection, sun avoidance during peak ultraviolet light hours (particularly between 10am and 2pm).8
Currently it is over 18 light hours from home, something best expressed as the time it takes to clear M6 junctions 18-20.
During low light hours, Soldiers wear night vision goggles to help them keep their area secure.