Marie Curie i think
Henri Becquerel was the first to discover radiation in 1896 while he was studying phosphorescent materials.
Penzias and Wilson discovered background radiation on October 7,1965.
Wilhelm Conrad Roentgen on November 8, 1895, discovered the X-Ray.
Primordial background radiation is in actuality Cosmic Microwave Background. To discover just what Cosmic Microwave Background theories are, visit the URL posted below:http://www.astro.ucla.edu/~wright/CMB.html
Henri Becquerel discovered that uranium salts emit a form of radiation that can penetrate opaque objects and fog photographic film. This phenomenon led to the discovery of radioactivity.
Nuclear engineers work in labs working with radiation and sometimes even actual nuclear product. They learn how to work around problems and discover new ways radiation can be helpful or harmful to the human body.
Pulsars were discovered by accident in 1967 when Jocelyn Bell, working with Antony Hewish were looking for twinkling sources of radio radiation.
Marie Curie did not discover chemotherapy, but her pioneering research on radioactivity laid the groundwork for its development. Her work with radium and its effects on cancer cells contributed to the understanding of how radiation can be used to treat cancer. Chemotherapy, as a treatment using chemical substances to target cancer, emerged later and involves different mechanisms than radiation therapy. Curie's contributions to science, however, significantly influenced the field of oncology.
Astronomers discover black holes in the universe by observing the effects they have on nearby objects, such as stars and gas. They use telescopes to detect X-rays and other forms of radiation emitted by black holes, as well as studying the gravitational influence they have on surrounding matter.
Wilhelm Roentgen, Professor of Physics in Worzburg, Bavaria, was the first person to discover the possibility of using electromagnetic radiation to create what we now know as the x-ray.
Marie Curie did not invent the X-ray machine; it was actually invented by Wilhelm Conrad Roentgen in 1895. However, Marie Curie did pioneer research on radioactivity and its uses in medicine, which contributed to advancements in X-ray technology.
Max Planck discovered that radiant energy was a proportional to the frequency of the radiation, E=hf and the constant of proportionality is Planck' Constant, h.