Question

People take inspiration from nature. George Mestral took such an inspiration and lead to the invention of
1. Braille
2. Velcro
3. Air plains
4. Sonar

Answer 1

Correct Answer - Option 2 : Velcro

Explanation:

George Mestral:

• In 1948, one day George Mestral came back from a walk with his dog.
• He was amazed to find seeds sticking all over his clothes and on his dog’s fur.
• He wondered what made them stick.
• So he observed these seeds under a microscope.
• He saw that the seeds had many tiny hooks which got stuck to clothes or fur.
• This gave Mestral the idea of making Velcro.
• He made a material with similar tiny hooks that would stick.
• Velcro is used to stick together many things – clothes, shoes, bags, belts and many more. 
• Thereby, taking inspiration from nature.

Thus, George Mestral took such an inspiration and lead to the invention of velcro.

Braille:

• Braille, a universally accepted system of writing used by and for blind persons and consisting of a code of 63 characters.
• Each character made up of one to six raised dots arranged in a six-position matrix or cell.
• These Braille characters are embossed in lines on paper and read by passing the fingers lightly over the manuscript.
• Louis Braille, who was blinded at the age of three, invented the system in 1824.
• He invented it while he was a student at the Institution Nationale des Jeunes Aveugles (National Institute for Blind Children), Paris.
• World Braille Day is annually celebrated on January 4, the birthday of Braille inventor, Louis Braille in 1824.