31 Jan Science tells you why the sky is blue
Science offers us a better understanding of the world around us. We are curious about many things, how did life begin? Why do we breathe? Why is the sky blue? Science answers these questions based on evidence and investigation. When we understand this we appreciate and learn to love learning more about science. Let’s take a look at why the sky appears blue to us.
The question was raised by some very famous people and studied from the time of Aristotle onwards. The answer comes from a combination of information from two branches of science, physics and biology. Let’s look at how physical science explains it. The way the sky is perceived depends on how the particles in the atmosphere absorb and scatter light. The light of the sun ranges from the violet end of the spectrum to the red. The violet rays tend to be high energy and have more ability to scatter than red and hence mostly blue-violet colors gets scattered.
Coming to how biology explains this. Science tells us, through biological studies and investigation that color around us is perceived through the cone cells in the eyes. These cones can perceive light close in wavelength as mostly a single discrete unit. Hence the blue-violet shades are seen by our eyes as blue white, making the sky appear to be a blue vast expanse.