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Water » Sea » Sunsets, sunrises

Sunrise in the Baltic SeaSunrise at Cape Kolka
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Sunrise in the Baltic Sea, Saullēkts, Baltijas jūra, Debesis

Sunrise in the Baltic Sea

Code: U-217-19
Author: Aivars Gulbis
Photo taken on July 26, 2019
FREE 1000 x 667 px
72 dpi
117 KB
S 1748 x 1165 px
14.8 x 9.87 cm / 300 dpi
MB
M 3000 x 2000 px
25.4 x 16.93 cm / 300 dpi
L 6000 x 4000 px
50.8 x 33.87 cm / 300 dpi
18.2 MB

Sunrise or sun up is the moment when the upper limb of the Sun appears on the horizon in the morning. The term can also refer to the entire process of the solar disk crossing the horizon and its accompanying atmospheric effects.

Terminology
"Rise"
Although the Sun appears to "rise" from the horizon, it is actually the Earth's motion that causes the Sun to appear. The illusion of a moving Sun results from Earth observers being in a rotating reference frame; this apparent motion is so convincing that most cultures had mythologies and religions built around the geocentric model, which prevailed until astronomer Nicolaus Copernicus first formulated the heliocentric model in the 16th century.

Architect Buckminster Fuller proposed the terms "sunsight" and "sunclipse" to better represent the heliocentric model, though the terms have not entered into common language.

Beginning and end
Astronomically, sunrise occurs for only an instant: the moment at which the upper limb of the Sun appears tangent to the horizon. However, the term sunrise commonly refers to periods of time both before and after this point:

  • Twilight, the period in the morning during which the sky is brightening, but the Sun is not yet visible. The beginning of morning twilight is called astronomical dawn.
  • The period after the Sun rises during which striking colors and atmospheric effects are still seen.

Sunrise in the Baltic Sea

Code: U-217-19
Author: Aivars Gulbis
Photo taken on July 26, 2019
FREE 1000 x 667 px
72 dpi
117 KB
S 1748 x 1165 px
14.8 x 9.87 cm / 300 dpi
MB
M 3000 x 2000 px
25.4 x 16.93 cm / 300 dpi
L 6000 x 4000 px
50.8 x 33.87 cm / 300 dpi
18.2 MB
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