sunlight

Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight is filtered through Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon. When the direct solar radiation is not blocked by clouds, it is experienced as sunshine, a combination of bright light and radiant heat. When it is blocked by clouds or reflects off other objects, it is experienced as diffused light. The World Meteorological Organization uses the term "sunshine duration" to mean the cumulative time during which an area receives direct irradiance from the Sun of at least 120 watts per square meter. Other sources indicate an "Average over the entire earth" of "164 Watts per square meter over a 24 hour day". The ultraviolet radiation in sunlight has both positive and negative health effects, as it is both a principal source of vitamin D3 and a mutagen. Sunlight takes about 8.3 minutes to reach Earth from the surface of the Sun. A photon starting at the center of the Sun and changing direction every time it encounters a charged particle would take between 10,000 and 170,000 years to get to the surface. Sunlight is a key factor in photosynthesis, the process used by plants and other autotrophic organisms to convert light energy, normally from the Sun, into chemical energy that can be used to fuel the organisms' activities.
Deer. - A herd of deer on a rut.
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Deer.

Added today by Grażyna

2

Sunset. - Sunset. Cloudy sky.
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Sunset.

Added yesterday by Zeta

20

górygóry - landscape of rice mountains puzzle for MAMA
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górygóry

Added 3 days ago by BAŚKA-D

83

morskie_oko - this is a mountain landscape he he he he he he he he
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morskie_oko

Added 4 days ago by oko

73

Alley in the park. - A beautiful alley in the park !!!
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Alley in the park.

Added 4 days ago by Grażyna

133

The source of Mary - An object in the Stołowe Mountains
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The source of Mary

Added 5 days ago by Elddrz

213

Police officer - Arrange the puzzles and you will get something
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Police officer

Added 6 days ago by inaa

0

Alley in the park. - Szpaler trees in the park.
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Alley in the park.

Added 6 days ago by Zeta

54

Path by the river. - Walking path on the river.
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Path by the river.

Added 6 days ago by Zeta

49

mossy forest - forest, greenery, mosses, path
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mossy forest

Added week ago by sandra

49

two trees - two trees against the sky
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two trees

Added week ago by sandra

72

Lone Tree. - A lonely tree among fields.
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Lone Tree.

Added week ago by Zeta

43

Sea landscape. - Sunny sea landscape.
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Sea landscape.

Added week ago by Zeta

28

autumn landscape - autumn, forest, road, leaves
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autumn landscape

Added 9 days ago by sandra

71

by the lake - lake, fog, trees, reflection
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by the lake

Added 9 days ago by sandra

101

birch forest - forest, trees, first snow
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birch forest

Added 10 days ago by sandra

161

BAJKOWY VIEW - Leave, rest, relax
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BAJKOWY VIEW

Added 11 days ago by ada

57

BAJKOWY VIEW - Leave, rest, relax
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BAJKOWY VIEW

Added 11 days ago by ada

54

tetmajerWlesie - Match the image to a verse of the poem
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tetmajerWlesie

Added 11 days ago by bszam

37

Water skiing. - Motorboat with a water skier.
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Water skiing.

Added 2 weeks ago by Zeta

27

Sunset. - Sunset by the sea.
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Sunset.

Added 2 weeks ago by Zeta

40

House on the beach. - House on the beach. Sunset.
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House on the beach.

Added 2 weeks ago by Zeta

103

The sun is shining. - The sun shines through the trees.
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The sun is shining.

Added 2 weeks ago by Zeta

37

Sunrise. - Spectacular sunrise over the sea.
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Sunrise.

Added 2 weeks ago by Zeta

40

Wooden bridge. - A wooden bridge in a misty forest.
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Wooden bridge.

Added 2 weeks ago by Zeta

50

Lane in the spring park. - Lane in the spring park.
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Lane in the spring park.

Added 2 weeks ago by Zeta

32

landscape - forest, trees, ferns, rays of the sun
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landscape

Added 2 weeks ago by sandra

104

Landscape - colorful jigsaw puzzle
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Landscape

Added 2 weeks ago by andi

101

Landscape - colorful jigsaw puzzle
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Landscape

Added 2 weeks ago by andi

29

approaching tornado - approaching tornado, forces of nature
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approaching tornado

Added 3 weeks ago by sandra

50

Sunset. - Sunset in the countryside.
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Sunset.

Added 3 weeks ago by Zeta

96

above the river - path on the river, trees, rays of the sun
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above the river

Added 3 weeks ago by sandra

104

Tulips for everyone! - Tulips for everyone!
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Tulips for everyone!

Added 3 weeks ago by Marcin

50

spring landscape - daffodils against the blue sky
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spring landscape

Added 3 weeks ago by sandra

215 2

sunset - sunset, sea, seaside landscape
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sunset

Added 3 weeks ago by sandra

176 1

rural landscape - rural landscape, fields, crops
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rural landscape

Added 3 weeks ago by sandra

40 1