Explanation

The main idea of the solar system was proposed by the Polish astronomer Nicolaus Copernicus (1473-1543).

who said that "the Sun is the centre of the Universe" and made the planets move around it in perfect circles

(in his book entitled, "On the Revolution of the Celestial Spheres", written in Latin and published in 1543)

Explanation

Antonie van Leeuwenhoek is credited with the discovery of bacteria.

In 1676, using a primitive microscope, he observed and described microorganisms.

Including bacteria and protozoa, which he referred to as "animalcules".

Explanation

A biconvex lens is the type of lens found in the human eye,

and it is responsible for forming genuine images

The lens, or crystalline lens, is a transparent biconvex

structure in most land vertebrate eyes (We are all vertebrates)

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The image formed at the retina of the human eye is real and inverted.

ND-8-08-2023

Explanation

Scientific socialism is strongly associated with Karl Marx.

He, along with Friedrich Engels, developed this theory in the mid-1800s

Analyzing societal structures through a historical, economic, and scientific lens, particularly focusing on class conflict.

Explanation

Discoverer of Cell: Robert Hook

Robert Hook described the cell as: Basic unit of life

Explanation

Radio waves were first predicted by James Clerk Maxwell in his theory of electromagnetism (Maxwell's equations) in 1867.

Heinrich Hertz experimentally demonstrated their existence in 1887.

Explanation

Perseverance landed on Feb. 18, 2021.

 is a car-sized Mars rover designed to explore the Jezero crater on Mars as part of NASA's Mars 2020 mission.

It was manufactured by the Jet Propulsion Laboratory and launched on July 30, 2020

As of 23 July 2023, Perseverance has been active on Mars for 861 sols.

Explanation

 Alexander Graham Bell is credited with inventing the first practical metal detector

He developed it in 1881

Explanation

Alexander Graham Bell invented an early version of the metal detector in 1881.

It was initially designed to locate a bullet inside President James Garfield.

Explanation

The discoverer of the cause of Malaria is Ronald Ross

Alphonse Laveran, a French army doctor, described the malarial parasite--

And proposed that it caused malaria in 1880.