Multiple choice

Scientist who discovered X-ray?

  1. Marie Curie

  2. Wilhelm Roentgen

  3. Helmholtz

  4. David Hilbert
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wilhelm Röntgen discovered X-rays in 1895 while experimenting with cathode ray tubes. He noticed they could pass through solid objects and create images of bones. The 'X' stood for unknown. Marie Curie studied radioactivity, Helmholtz worked on thermodynamics and physiology, and Hilbert was a mathematician.

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