Question

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what is advance sunrise and delayed sunset?​

Answer 1

Answer:

Advanced sunrise and delayed sunset are phenomena caused due to atmospheric refraction. In this the Sun appears to rise early by 2 minutes and set late by 2 minutes. The diagram below shows this phenomenon. When the rays from the Sun hit the atmosphere they get refracted.

Answer 2

Explanation:

your answers

Here, we see sun above the horizon, but the sun is actually not above the horizon.

Infact:

We see sunrise 2 minutes before actual sunrise

We see sunset 2 minutes after sunset

This is because of atmospheric refraction

advance sunrise

Before Sunrise, sun is below the horizon

Sun's rays are coming from more dense air towards less dense air

This causes sun rays to refract and appear to come above the horizon

Our eyes see sun rays as a straight line, it appears to us that sun has risen but it has actually not yet risen

Explanation for Delayed Sunset

After Sunset, Sun is below the horizon

Sun's rays are coming from more dense air towards less dense air

This causes sun rays to refract and appear to come above the horizon

Our eyes see sun rays as a straight line, it appears to us that sun has not yet set