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  1. Problems
  2. /Optics
  3. /Light in the Atmosphere

Light in the Atmosphere

Physics
+ Upload a Problem
More in OpticsReflection of LightRefraction of LightLenses and Optical InstrumentsThe Human Eye and VisionWave OpticsPrisms and Dispersion of LightLight in the Atmosphere
13 problems
Type:
1.
The program in this problem finds how much blue and red light is left in sunlight at different…
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Hard
2.
Astronauts on a space station, far above most of the air, see a black sky even in full sunlight.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Hard
3.
Why are danger signals red? In a light haze of very small particles, how many times more is green…
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Easy
4.
Sunlight crosses about 1/(sin h) times as much air as from overhead.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
5.
The blue of the sky and the red of a sunset are both caused by scattering.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Easy
6.
Use the rule that scattering is proportional to 1/λ⁴.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
7.
Thin clouds look white. A thick rain cloud looks grey, or even dark. Why the difference?
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
8.
Very small particles scatter light in proportion to 1/λ⁴.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
9.
Say whether the Tyndall effect is the cause of what we see.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Easy
10.
At sunset the Sun looks flattened, wider than it is tall. Explain. Why does it look round at noon?
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
11.
At a place, the true sunrise (without the air) is at 5:47 in the morning, and the true sunset is at…
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
12.
On a night of very still air, stars twinkle less than usual.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Medium
13.
Light from a star that is truly 70° from overhead comes down through the air.
High School (9–10) · Light in the AtmosphereStemPy LabStemPy Lab
Easy