Explanation

• Christopher Columbus was Italian, born in Genoa in 1451
• He discovered America in 1492.
• He completed four Spanish-sponsored voyages across the Atlantic Ocean
• He was the 1st Governor of the Indies from 1492–1499
• Died: 20 May 1506 (aged 54), Valladolid, Castile

Last updated by NA on 05-11-2026

Explanation

• Invented by: Dennis Ritchie.
• First appeared: 1972.
• Developed at: Bell Laboratories, USA.
• Company: AT&T.
• Type: General-purpose programming language.
• Co-developer of: UNIX.
• Known as: Father of C Language.

Last updated by NA on 05-11-2026

Explanation

• Wilhelm Conrad Rontgen discovered X-rays
• He was discovered on 8 November 1895.
• He got the Nobel Prize in Physics in 1901.

Additional questions

• The penetrating power of X-rays depends on their frequency

Last updated by NA on 05-11-2026

Explanation

• Inventors: Montgolfier brothers (Joseph-Michel and Jacques-Étienne).
• First public demonstration: 4 June 1783, Annonay, France.
• First passenger flight: 1783, near Paris.
• Known as: Pioneers of human flight.

Last updated by NA on 04-11-2026

Explanation

• John Napier was the discoverer of logarithms.
• He also invented the so-called "Napier's bones"
• He invented the logarithm in 1614.
• His purpose was to assist in the multiplication of quantities that were then called sines.

Last verified on 02-11-2026