Children tend to be naturally inquisitive, and one of their more frequent inquiries about why the sky is blue can often be answered with this simple fact: light scatters more strongly into blue wavelengths than other colors (red, orange, yellow, green, indigo and violet). But why does that occur, and why does the sky look…
White light contains all of the colors of the rainbow, yet appears blue due to atmospheric scattering of its wavelengths. This phenomenon also accounts for why sunsets and sunrises tend to look red as longer wavelengths travel further through our atmosphere before reaching our eyes. The Sun’s Light An astounding blue sky is truly spectacular…
Human eyes are truly remarkable; anyone who has taken a visual acuity test knows that 20/20 vision is considered standard. Light enters our eyes through the cornea, which then focuses it. Next, our pupil — that central round opening in your iris’ colored part — changes size to allow in more or less light. The…
