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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.
Walk along the causeway. - Afternoon walk along the causeway.
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Walk along the causeway.

Added 3 days ago by Zeta

114

Sunset. - Sunset in Masuria.
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Sunset.

Added 3 days ago by Zeta

99

Flowers in the clouds - Flowers, beautiful view on the clouds background
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Flowers in the clouds

Added 5 days ago by Mila

159

love to the sunsets - here is another beautiful image you can reassemble it
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love to the sunsets

Added 6 days ago by helang

105

The beauty of nature - Mountains rocks and the beauty of nature
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The beauty of nature

Added 9 days ago by GWIAZDKA

158

park in the park - oj la la la la la la la
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park in the park

Added 11 days ago by MAJAMA

78

Balloons .. - A lovely landscape with balloons in the background.
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Balloons ..

Added 11 days ago by Grażyna

93

winter morning - la ma i have baja
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winter morning

Added 12 days ago by MAJAMA

104

Landscape - colorful jigsaw puzzle
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Landscape

Added 13 days ago by andi

54

Sunset over the fields. - Sunset over the fields.
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Sunset over the fields.

Added 2 weeks ago by Zeta

56

Cloudy sky. - Cloudy sky over the fields.
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Cloudy sky.

Added 2 weeks ago by Zeta

92

Sunset - colorful jigsaw puzzle
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Sunset

Added 2 weeks ago by andi

47

Road among trees. - Road among trees at sunset.
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Road among trees.

Added 2 weeks ago by Zeta

123

klonowisko - brum brum brum brum brum
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klonowisko

Added 2 weeks ago by MAJAMA

21

Mountain landscape. - Mountains. Brook. Bridge.
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Mountain landscape.

Added 2 weeks ago by Grażyna

184

Park landscape. - Park. Tree. Bench...
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Park landscape.

Added 3 weeks ago by Grażyna

53

BAJKOWY VIEW - Vacation, holidays, rest.
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BAJKOWY VIEW

Added 3 weeks ago by ada

40

A misty lake. - Lake clearance through trees.
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A misty lake.

Added 3 weeks ago by Zeta

63

Bryce Canyon. Utah. - Natural arch in Bryce Canyon. Utah.
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Bryce Canyon. Utah.

Added 4 weeks ago by Zeta

38

Sunset over the Po Delta. - Sunset over the Po Delta.
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Sunset over the Po Delta.

Added 4 weeks ago by Zeta

110

Bridge at sunset. - Bridge at sunset.
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Bridge at sunset.

Added month ago by Zeta

43

A lake shelter. - A lake shelter.
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A lake shelter.

Added month ago by Zeta

33

Sunset. - Sunset on the lake.
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Sunset.

Added month ago by Zeta

36

Summer landscape. - Summer landscape with a lake.
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Summer landscape.

Added month ago by Zeta

231 14

Bench by the lake. - Bench by the forest lake.
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Bench by the lake.

Added month ago by Zeta

41

tree and meadow - tree and meadow with wide sky
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tree and meadow

Added month ago by internet

41 2

Sunset - Sunset on the Baltic
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Sunset

Added month ago by Wiesia

162

Landscape-painting - colorful jigsaw puzzle
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Landscape-painting

Added month ago by andi

318 1

Sunset - Sunset on the Baltic
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Sunset

Added month ago by Wiesia

88

Landscape - colorful jigsaw puzzle
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Landscape

Added month ago by andi

121

Landscape - colorful jigsaw puzzle
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Landscape

Added month ago by andi

233 1

Landscape - colorful puzzle-puzzle
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Landscape

Added month ago by andi

109

Sunset - colorful jigsaw puzzle
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Sunset

Added month ago by andi

78