In the previous class, we learned about the scattering of light by colloidal particles. While the path of a beam of light passing through a true solution remains invisible, it becomes visible when passing through a colloidal solution. This is ...
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The blue color of the sky, the color of water in the deep sea, and the reddening of the sun at sunrise and sunset are examples of spectacular natural phenomena arising from the interaction of light with objects in our ...
The apparent flattening of the Sun’s disc at sunrise and sunset is due to atmospheric refraction. As the Sun’s light passes through the Earth’s atmosphere, atmospheric refraction causes the lower portion of the Sun’s disc to appear more flattened compared ...
The term “actual sunrise” refers to the moment when the Sun crosses the horizon. The time difference between the actual and apparent sunrise (when the Sun becomes visible) is about 2 minutes, and this difference is attributed to the bending ...
Aerobic respiration, occurring in the presence of oxygen, releases a significantly greater amount of energy compared to anaerobic respiration. It involves the breakdown of pyruvate in the mitochondria, producing carbon dioxide and water.