Information about Shade

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A dozen different species of plants growing in the shade
Shade is the blocking of sunlight (in particular direct sunshine) by any object, and also the shadow created by that object. It may refer to blocking of sunlight by a roof, a tree, an umbrella, a window shade or blind, curtains, or other objects.

Shade is an important issue in temperate and tropical zones for providing cooling and shelter from the sun. Providing certain configurations of shading is an important passive solar technique. This may be done with overhangs, with shade trees, or with vines. Vines particularly suited for this purpose include Boston ivy, Virginia creeper, and morning glory.

Shading using non-living materials blocks the sun, but also results in sunlight being absorbed and re-radiated as heat, or in sunlight being reflected as glare. Green plants, on the other hand, not only absorb a significant portion of the sunlight to invest as energy in photosynthesis to produce sugar, but also actively transpire, producing an additional cooling effect.

In gardening terms, there are various types of shade:
  • Full sun - more than five hours of direct sun per day.
  • Part shade - two to five hours of direct sun, or all-day dappled sun (sunlight shining through open trees).
  • Full shade - less than two hours of direct sun per day.
Sunlight, in the broad sense, is the total spectrum of the electromagnetic radiation given off by the Sun. On Earth, sunlight is filtered through the atmosphere, and the solar radiation is obvious as daylight when the Sun is above the horizon.
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A shadow is a region of darkness where light is blocked. It occupies all of the space behind an opaque object with light in front of it. The cross section of a shadow is a two-dimensional silhouette, or reverse projection of the object blocking the light.
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tree is a perennial woody plant. It is sometimes defined as a woody plant that attains diameter of 10 cm (30 cm girth) or more at breast height (130 cm above ground).
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umbrella or parasol (sometimes colloquially, brolly, or bumbershoot) is a canopy device designed to protect from precipitation or sunlight. The term parasol usually refers to an item designed to protect from the sun, and umbrella
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window blind or door blind is a covering for a window or door, usually attached to the interior side of a window. Blinds hide from sight (thus "blinding" a viewer of the window) or to reduce sunlight.
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Curtain or curtains may refer to:
  • Curtain, a piece of cloth intended to block or obscure light.
  • Curtain (fortification)
  • Curtain (novel), by Agatha Christie
  • Curtains (song), by Peter Gabriel
  • Curtains (album), by John Frusciante

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temperate latitudes of the globe lie between the tropics and the polar circles. The changes in these regions between summer and winter are generally mild, rather than extreme hot or cold. However, a temperate climate can have very unpredictable weather.
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tropics are the geographic region of the Earth centered on the equator and limited in latitude by the Tropic of Cancer in the northern hemisphere, at approximately 23°30' (23.5°) N latitude, and the Tropic of Capricorn in the southern hemisphere at 23°30' (23.5°) S latitude.
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The Sun

Observation data
Mean distance
from Earth 1.4961011 m
(8.31 min at light speed)
Visual brightness (V) −26.74m [1]
Absolute magnitude 4.
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Passive solar technologies convert sunlight into usable heat, cause air-movement for ventilation or cooling, or store heat for future use, without the assistance of other energy sources.
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A shade tree is any tree grown specifically for its shade. This term usually applies to large trees with spreading canopies. Shade trees are effective in reducing the energy used in cooling homes.
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vine is any plant of genus Vitis (the grape plants) or, by extension, any similar climbing or trailing plant. The word, derived from Latin vīnea, referred to the grape-bearing variety.
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P. tricuspidata

Binomial name
Parthenocissus tricuspidata
(Siebold & Zucc.) Planch.

Parthenocissus tricuspidata (also known as Japanese creeper, Boston ivy,
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P. quinquefolia

Binomial name
Parthenocissus quinquefolia
(L.) Planch.

Virginia creeper or five-leaved ivy (Parthenocissus quinquefolia
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Morning glory is a common name for over 1,000 species of flowering plants in the family Convolvulaceae, belonging to the following genera:
  • Calystegia
  • Convolvulus
  • Ipomoea
  • Merremia
  • Rivea

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