Sentence examples for daylight length from inspiring English sources

A hormonal response that varies with daylight length also does strange things to the brain: the ability to acquire and deliver song dwindles, and the relevant area of the bird brain shrinks, in the winter.

Jeong and his colleague David Megvigy of Princeton University, US found they could largely predict colour change with two variables: daylight length and temperature.

Environmental and biological factors which can affect animal populations, especially through their effect on reproduction and mortality, include: environmental temperature, humidity, daylight length, nutrition, water availability, disease, and heredity (Temple 1984).

Murray cod spawn in spring, cued by rising water temperatures and increasing photoperiod (daylight length).

82 Over 90% of people have some mood reduction during sporadically overcast weather or seasonal decreases in daylight length or intensity.

In low-light conditions, (continuously 75 μmol m-2 s-1 PFD or 6.5 mol m-2 day-1 PAR) or in sunny daylight with a day length of 12.5 h (17.2 mol m-2 day-1 PAR) when the growth rate was much lower, less or no negative effect was found of the undiluted flue gas.

Although they did not fix their schedules to the clock in the modern sense, ancient civilizations adjusted daily schedules to the sun more flexibly than modern DST does, often dividing daylight into twelve hours regardless of day length, so that each daylight hour was longer during summer.

The duration of daylight at each sampling date and additional dates to build a photoperiod curve was calculated using the day length calculator (http://www.solartopo.com).solartopo.com

Things that might affect the degree of finish achieved on a particular giornata include the heat and humidity of the day and the length of daylight hours.

Because of Uganda's equatorial location, there is little variation in the sun's declination at midday, and the length of daylight is nearly always 12 hours.

Sir Jeremy Heywood has always preferred to keep daylight at arm's length, so to be dragged in front of a select committee two days running to explain his guidance to the civil service in dealing with ministers campaigning for Britain to leave the EU was testing more than just his patience.