Penzias and Wilson discovered background radiation on October 7,1965.
They discovered cosmic microwave background radiation is a major development in modern physical cosmology
Wilhelm Conrad Roentgen on November 8, 1895, discovered the X-Ray.
she didnt invent it. she just brought the xray to world war 1
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
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.
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.
Arno Penzias and Robert Woodrow Wilson accidentally discovered the cosmic microwave background radiation while experimenting with the Holmdel Horn Antenna
Henri Becquerel was the first to discover that a penetrating radiation came from uranium, even if the uranium had not been exposed to sunlight. He thus showed that radioactivity was a fundamental property of uranium. Prior to his discovery, it was thought that any such radiation coming from uranium was the result of its interaction with sunlight.
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.
I think the question means, what did James Clerk Maxwell discover or invent...? His major achievement was the discovery and analysis of electromagnetic radiation, leading to the development of radio communications.