Which type of electromagnetic radiation was discovered by Johann Wilhelm Ritter in 1801?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Ultraviolet rays.
- Johann Wilhelm Ritter discovered ultraviolet (UV) radiation in 1801. He conducted experiments using sunlight and silver chloride, noting that the silver salt darkened more quickly in the part of the spectrum beyond visible light, which we now know as ultraviolet.
- This discovery was significant because UV radiation is outside the visible spectrum of light. Ritter's work contributed to the understanding of the broader electromagnetic spectrum.
- His discovery was key to the study of light and its various forms. It paved the way for later advances in optics and electromagnetic theory.