Your phrasing is rather sloppy and I have to guess what it is you are really asking, but nonetheless I have an answer. Radioactivity was first discovered by three scientists, Marie & Pierre Curie, and Antoine Becquerel. There are many ways to detect or observe radioactivity, but the simplest is that it affects photographic film as if it had been exposed. For a more sophisticated, modern observation, we use cloud chambers or bubble chambers.
J. J. Thomson is credited with discovering electrons.
The scientist who is credited with discovering the concept of force is Sir Isaac Newton. Newton formulated the three laws of motion, which describe the relationship between the motion of an object and the forces acting on it. His work laid the foundation for classical mechanics and revolutionized our understanding of the physical world.
Sir Isaac Newton is credited with discovering the laws of gravity and inertia. His work laid the foundation for classical mechanics and our understanding of motion and force.
The scientist who is credited with discovering the SI (International System of Units) is Gabriel Mouton, a French clergyman and mathematician. He proposed the system in 1670. The SI system is now the most widely used system of measurement worldwide.
Heinrich Rudolf Hertz is the scientist credited with discovering soundwaves. Hertz showed that sound involves the propagation of waves through a medium and laid the foundation for the study of acoustics.
Marie Curie
Marie Curie
Joseph Priestly was the scientist who is credited with much of the progress in the biological sciences during the 18th century. He is usually credited with discovering oxygen.
Marie Curie is credited with discovering radium. She died of aplastic anemia, likely caused by her prolonged exposure to high levels of radiation during her research with radioactive materials.
one of the first antibiotics was actually discovered by a British scientist named Alexander Fleming. He is credited for discovering (penicillin)
Ernest Rutherford is credited with discovering the nucleus of the atom through his gold foil experiment in 1909. He observed that most of the particles passed through the foil, suggesting that the atom is mostly empty space with a concentrated positive charge at the center, which he called the nucleus.
J. J. Thomson is credited with discovering electrons.
radium
discovering
Issac Newton he identified the 3 laws (newtons Laws of psychics )that verified his thereum of Gravity , which later became a theory
Christopher Columbus was an early explorer. He is credited with discovering the Americas.
Gregor Mendel, an Austrian monk and scientist, is credited with discovering the principles of inheritance through his work with pea plants. Mendel's experiments laid the foundation for modern genetics and helped to explain the mechanisms of inheritance that Darwin couldn't fully account for.