Explanation

Explanation

Kevin Systrom co-founded Instagram along with Mike Krieger in 2010.

The app was later acquired by Facebook in 2012.

Explanation

Theodolite is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes.

Theodolite was invented by Leonard Digges (United Kingdom)

Explanation

Baden Powel was the founder and first Chief Scout of the world-wide Scout Movement.

 Jacques Rousseau was a philosopher and writer from Geneva.

Winston Churchill was the PM of UK.

Explanation

• JJ Thomas was discovered by an Electron
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• In 1897 Thomson discovered the electron and then went on to propose a model for the structure of the atom.
• His work also led to the invention of the mass spectrograph
• Thomson was a physics professor at Cambridge University in the UK
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  Joseph.J. Thomson was also awarded the Nobel Prize in Physics in 1906.
  

Explanation

Answer:

B

Calvin Goddard, who worked on the slaughter, modernized the field of firearms testing. He worked with chemist Philip Gravelle to develop a special comparison microscope that can analyze two spheres at the same time.

Explanation

Omer-Khayam was born in Iran in 1048 AD.

Omer-Khayam was a poet, Mathematician & Astronomer. 

Omer-Khayam introduced the modern Solar Hijri calendar, the Jalali calendar.

Place of burial: Tomb of Omar Khayyam, Iran

Main interests:

Mathematics (medieval Islamic); astronomy; Persian philosophy; Persian poetry

Explanation

Richest Man according to Forbes: Elon Musk

Elon Musk Net Worth: 287.6 billion dollars

Updated: 10th April 2022

Explanation

James Harrison, an Australian inventor, is credited with creating the first practical refrigeration system in 1856.

His work laid the foundation for modern refrigeration technology, which was crucial for preserving food and other goods.

Explanation

• John Logie Baird FRSE (/ˈloʊɡi bɛərd/; 13 August 1888 – 14 June 1946) turned into a Scottish inventor, electric engineer, and innovator who confirmed the arena's first stay running television machine on 26 January 1926.
• He went directly to invent the primary publicly verified shade tv gadget and the first viable in simple terms electronic coloration television photo tube.
• In 1928 the Baird television development business enterprise achieved the primary transatlantic television transmission. Baird's early technological successes and his function in the realistic advent of broadcast tv for home enjoyment have earned him a outstanding area in television's history.