Explanation

French physicists Charles Fabry and Henri Buisson discovered the ozone layer in 1913.

They used an interferometer to measure the amount of ozone in the atmosphere.

Explanation

A force couple is the term used for a system of two equal antiparallel forces, the arm of the couple is the shortest distance between the forces

Explanation

• Structure of DNA was discovered by James Watson and Francis Crick in 1953.
• They discovered the double-helix structure of DNA using X-ray crystallography data.
• Their discovery revealed the double-helix structure of DNA, where two complementary strands are twisted together with sugar and phosphate molecules, and the nitrogenous bases (adenine, thymine, cytosine, and guanine) pair in a specific manner.

Explanation

Homeopathy developed by: Dr. Samuel Hahnemann

Homeopathy developed in: Germany

World Homeopathy Day observed: 10 April

Samuel Hahnemann born: April 10, 1755

Explanation

darwin believed in perceived unity in life, with all organisms related through descent from some common ancestor that lived in the remote past.

Explanation

Alfred Nobel  Born: October 21, 1833, Stockholm, Sweden

Alfred Nobel  Died: on December 10, 1896, in Sanremo, Italy

Alfred Nobel Full name: Alfred Bernhard Nobel

Alfred Nobel invented dynamite and Nitro-glycerine in 1875.

Alfred Nobel was a chemist from Sweden. 

He is best known for having bequeathed his fortune to establish the Nobel Prize

Alfred Adler proposed  that humans are motivated by Social urges of superiority and inferiority

Explanation

Rober Oppenheimer: is among those who are credited with being the "father of the atomic bomb" for their role in the Manhattan Project – the World War II

Explanation

The atmospheric pressure at any place is measured by a Barometer

***

The barometer was invented by Evangelista in 1644.

**

Explanation

An endoscope is an inspection instrument composed of image sensor, optical lens, light source and mechanical device, which is used to look deep into the body.

Explanation

Aspirin, also known as acetylsalicylic acid, is a drug used to relieve pain, fever, or inflammation.

Aspirin was invented by German chemist Felix Hoffmann in 1897.