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The true day period is only extended by a tiny amount by the refraction of some sunlight (mostly red) back down from the upper atmosphere to the ground as the Sun actually moves below the horizon.
The longer extension of brighter conditions is called twilight, and can exist for some time after sunset, and also before dawn. This is mostly reflection or scattering from particles in the upper atmosphere, and can be very bright when high clouds are still being illuminated by the Sun.
What else can I help you with?
Atmospheric refraction makes the daylight hours a bit what?
Atmospheric refraction makes daylight hours appear longer at sunrise and sunset because the sun's apparent position is shifted due to the bending of light as it passes through Earth's atmosphere. This effect causes the sun to be visible even when it is geometrically below the horizon, creating the phenomena of sunrise and sunset.
What are examples of atmospheric refraction?
sun halo, sun rays, rainbows, fire rainbow, pumpkin sun, etc
The sun and moon appear elliptical near the horizon due to?
The sun and moon appear elliptical near the horizon due to atmospheric refraction. This bending of light causes the celestial objects to look slightly flattened when they are closer to the horizon.
Which explains why sky appears blue on a sunny day?
Due to refraction of light.
How does refraction affect the appearance of the sky?
The sky is blue because of refraction. Sunsets and sunrise are so beautiful because of refraction. If there was no refraction, we would see the sky as a black expanse.
A mirage is a result of atmospheric?
refraction
What is the optical illusion caused by atmospheric conditions?
A mirage is an optical illusion which is caused by atmospheric conditions. This is often due to the refraction of light from the sky by heated air.
How many months of constant day light does the south pole have?
Ignoring the effects of atmospheric refraction, the sun is above the horizon from about September 21 until about March 21, as seen from the south pole.
Can life cycles be lengthened or shortened?
Lengthened
What is minimum distance of the sun from the horizon so that it is visible to an observer standing on the earth?
Depending on the atmospheric conditions, when you see the Sun rise, it may actually be between about 1 and 4 degrees below the horizon, due to refraction in the atmosphere.Depending on the atmospheric conditions, when you see the Sun rise, it may actually be between about 1 and 4 degrees below the horizon, due to refraction in the atmosphere.Depending on the atmospheric conditions, when you see the Sun rise, it may actually be between about 1 and 4 degrees below the horizon, due to refraction in the atmosphere.Depending on the atmospheric conditions, when you see the Sun rise, it may actually be between about 1 and 4 degrees below the horizon, due to refraction in the atmosphere.
Atmospheric refraction makes the daylight hours a bit what?
Atmospheric refraction makes daylight hours appear longer at sunrise and sunset because the sun's apparent position is shifted due to the bending of light as it passes through Earth's atmosphere. This effect causes the sun to be visible even when it is geometrically below the horizon, creating the phenomena of sunrise and sunset.
What are examples of atmospheric refraction?
sun halo, sun rays, rainbows, fire rainbow, pumpkin sun, etc
Is refraction an area of low pressure?
No, refraction is not an area of low pressure. Refraction is the bending of light as it passes through different mediums with varying densities. On the other hand, low pressure refers to a region where the atmospheric pressure is lower than the surrounding areas.
What is the refraction of light through air layers of different densities called?
The refraction of light through air layers of different densities is called atmospheric refraction. This phenomenon causes the path of light to bend as it passes through the different layers, resulting in optical effects such as mirages.
The meaning of refraction?
The act of refracting, or the state of being refracted., The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a different density from that through which it has previously moved., The change in the direction of a ray of light, and, consequently, in the apparent position of a heavenly body from which it emanates, arising from its passage through the earth's atmosphere; -- hence distinguished as atmospheric refraction, or astronomical refraction., The correction which is to be deducted from the apparent altitude of a heavenly body on account of atmospheric refraction, in order to obtain the true altitude.
Why does sun appears 2 minutes late after actual sunset?
Atmospheric refraction makes the Sun appear higher than it really is.
What is atmospheric refraction of sunrise and sunset?
Atmospheric refraction is the bending of light as it passes through the Earth's atmosphere. During sunrise and sunset, the Sun appears to be slightly above the horizon when it is actually below it due to this effect. This bending causes the Sun to be visible a few minutes before it physically rises and a few minutes after it physically sets.
