X-rays were discovered in which year?

X-rays were discovered in which year?

• A. 1895
• B. 1898
• C. 1901
• D. 1904

Answer: (A)

The moment being tested is when X-rays were first discovered. Wilhelm Conrad Roentgen made the discovery in 1895 while experimenting with a cathode-ray tube. He noticed a fluorescent screen near the tube lighting up even when the tube was blocked from direct view, indicating a new kind of penetrating ray. He named these rays X-rays and soon produced the first radiograph—famously of a hand—to demonstrate their ability to pass through soft tissue and cast shadows of bones. The discovery was announced in 1895, making that year the correct answer. The other dates come later: 1901 is when Roentgen received the first Nobel Prize for the discovery, and 1898 or 1904 refer to subsequent developments rather than the initial finding.

The moment being tested is when X-rays were first discovered. Wilhelm Conrad Roentgen made the discovery in 1895 while experimenting with a cathode-ray tube. He noticed a fluorescent screen near the tube lighting up even when the tube was blocked from direct view, indicating a new kind of penetrating ray. He named these rays X-rays and soon produced the first radiograph—famously of a hand—to demonstrate their ability to pass through soft tissue and cast shadows of bones. The discovery was announced in 1895, making that year the correct answer. The other dates come later: 1901 is when Roentgen received the first Nobel Prize for the discovery, and 1898 or 1904 refer to subsequent developments rather than the initial finding.