By Team Aakash Byju's
A poster board, a solar filter, blue painter’s tape, scissors, a pen.
The sunglasses must be certified to protect the eyes against the sun’s UV radiation. The solar filter brands approved by NASA are recommended.
An exposed color film, a medical x-ray film, a smoked glass, CD & floppy discs are some alternate solar filters.
Draw an outline for the eyes & nose on a poster board & cut out the frames using scissors or pop out the lenses of an old pair of 3D glasses.
Match the size of the outline drawn with the solar filters so it completely covers the glasses. Any scratches/gaps can be harmful.
Use blue painter’s tape to fix solar filter frames with the poster board and also fix the earpieces in place.
Go to a dark room & expose the bright light to yourself. If any bright light passes through the prepared eclipse glass, then it is a NO.
Repeat all the previous steps until the glasses pass the safety testing. The one which passes the safety test is good to go.