A solar eclipse occurred on June 21, across parts of Asia and Africa. You should avoid looking directly at the sun without appropriate eye protection during a solar eclipse, as it can cause severe damages to the retina. One of the safest ways of watching a sun eclipse is with solar eclipse glasses. Let’s take a look at these glasses to see what chemical materials they are made of.
These devices consist of solar filters, which are specially designed to block a majority of the sun’s light. “Black polymer” is one of the most efficient materials for making solar filters. It is composed of carbon particles suspended in a polymer matrix. Black carbon particles darken the filters to transmit only 0.00032 percent of the sun’s ray.
That’s how chemistry helps us to enjoy watching solar eclipse in a safe way!