Alexander Graham Bell (1847-1922), inventor of the telephone.  Bell would have been known to history simply as Alexander Bell, but he was highly jealous of his brothers’ middle names and asked for and received one for his 11th birthday. His interest in acoustics developed during his childhood through his experiences with his deaf mother, influencing his later work with the deaf and experimentation with sound.

Alexander Graham Bell inventor of the telephone. Bell would have been known to history simply as Alexander Bell, but he was highly jealous of his brothers’ middle names and asked for and received one for his birthday.

British biophysicist Rosalind Franklin (1920-1958) took the photo that led to the discovery of the DNA double helix, but all recognition went to male colleagues Watson and Crick.

Rosalind Franklin British biophysicist and X-ray crystallographer who made critical contributions to the understanding of the fine molecular structures of DNA.

Nikola Tesla (Serbian Cyrillic: Никола Тесла; 10 July 1856 – 7 January 1943) was a Serbian American inventor, electrical engineer, mechanical engineer, and futurist best known for his contributions to the design of the modern alternating current (AC) electricity supply system.

Nikola Tesla ( 10 July 1856 – 7 January was a Serbian-American inventor, electrical engineer, mechanical engineer, and futurist, best known for his contributions to the design of the modern alternating current (AC) electricity supply system.

Thomas Alva Edison (1847 – 1931) was an American inventor and businessman. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb.

Thomas Edison ~ inventor, credited with the invention of the light bulb. Not a nice man, though!

Niels Bohr (1885 – 1962) was a Danish physicist who made contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922. He was part of the British team of physicists working on the Manhattan Project. One of their sons, Aage Bohr, grew up to be an important physicist who in 1975 also received the Nobel Prize. Bohr has been described as one of the most influential scientists of the 20th century.

Niels Henrik David Bohr 7 October 1885 – 18 November was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in

Stephen William Hawking (born 8 January 1942) is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. His scientific works include a collaboration with Roger Penrose on gravitational singularity theorems in the framework of general relativity, and the theoretical prediction that black holes emit radiation, often called Hawking radiation.

Stephen William Hawking CH CBE FRS FRSA January is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge.

Henri Becquerel [1852-1908] In 1897 when Henri Becquerel researched the newly discovered X-rays it led to studies of how uranium salts are influenced by light. By accident, he discovered that the uranium salts spontaneously emitted a penetrating radiation that could be registered on a photographic plate. Further studies made it clear that this radiation was something new - not the same type as X-rays. He had discovered a new phenomenon - radioactivity. [by Félix Nadar]

Antoine Henri Becquerel December 1852 – 25 August was a French physicist, Nobel laureate, and the discoverer of radioactivity along with Marie Skłodowska-Curie and Pierre Curie, for which all three won the 1903 Nobel Prize in Physics.

The Russian chemist Dmitrii Ivanovich Mendeleev (1834-1907) Mendeleev's original work covered a wide range, from questions in applied chemistry to the most general problems of chemical and physical theory. His name is best known for his work on the Periodic Law.

Dmitri Ivanovich Mendeleev, Russian chemist and inventor. He is credited as being the creator of the first version of the periodic table of elements. Using the table, he predicted the properties of elements yet to be discovered.

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