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41.
Who discovered the principles of electromagnetism, formulated Ampère's circuital law, and invented the galvanometer?
Explanation:
42.
Who is known for developing the first successful polio vaccine administered using a live, weakened virus?
Explanation:
43.
Who is famous for the discovery of the laws of heredity and the principles of dominant and recessive traits?
Explanation:
44.
Who invented the first practical sewing machine, which greatly improved the efficiency of clothing production?
Explanation:
45.
Who is known for the discovery of the electron and the development of the plum pudding model of the atom?
Explanation:
46.
Who is famous for developing the theory of general relativity, which revolutionized our understanding of gravity and the cosmos?
Explanation:
47.
Who is known for the invention of the steam locomotive, which transformed transportation and industrialization?
Explanation:
48.
Who is famous for the invention of the telegraph and the development of Morse code?
Explanation:
49.
Who is credited with the discovery of penicillin, the first widely used antibiotic, in 1928?
Explanation:
50.
Who is known for the invention of the telephone, a device that revolutionized long-distance communication?