What did Wilhelm Conrad Roentgen discover?

Options

A. Thermodynamics
B. X-Rays
C. Electric bulb
D. Conservation of electric charge

Answer

B

Explanation

Wilhelm Conrad Roentgen was a German mechanical engineer and physicist who in 1895 produced and detected electromagnetic radiation in a wavelength range known as X-rays, an achievement that earned him the first Nobel Prize i n Physics in 1901.