10 most difficult discoveries riddlesDiscoveries quiz
Who in 1838 invented stereoscopic apparatus?
The original stereoscopic apparatus was invented in 1838 by Sir Charles Wheatstone from Gloucestershire, in the year of the birth of photography, yet his early experiments employed drawings instead of photographs, viewed through a system of angled mirrors.
Which physician discovered that contaminated water was the source of the cholera epidemic in London in 1854?
John Snow was an English physician and a leader in the adoption of anaesthesia and medical hygiene. He is considered one of the fathers of modern epidemiology, in part because of his work in tracing the source of a cholera outbreak in Soho, London, in 1854. His findings inspired fundamental changes in the water and waste systems of London, which led to similar changes in other cities, and a significant improvement in general public health around the world.
What is the source of the fast radio burst (FRB)?
its source is unknown
A fast radio burst (FRB) is a high-energy astrophysical phenomenon manifested as a transient radio pulse lasting a few milliseconds on average. The origin of the FRBs has yet to be determined. Proposals range from a rapidly rotating neutron star and a black hole to an extraterrestrial intelligence.
Who was the first to use the term "America"?
The name America was first recorded in 1507. Christie's auction house says a two-dimensional globe created by Martin Waldseemüller was the earliest recorded use of the term. America derives from Americus, the Latin version of Italian explorer Amerigo Vespucci's first name.
What is the name of this astronomical object?
The Cat's Eye Nebula is a relatively bright planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum was investigated by the English amateur astronomer William Huggins, demonstrating that planetary nebulae were gaseous and not stellar in nature.
What is the name of the new mineral found on the moon
Armalcolite is a titanium-rich mineral with the chemical formula (Mg,Fe2+)Ti2O5. It was first found at Tranquility Base on the Moon in 1969 and is named for Armstrong, Aldrin and Collins, the three Apollo 11 astronauts. Together with tranquillityite and pyroxferroite, it is one of three new minerals that were discovered on the Moon.
Who was the first to circumnavigate Australia?
Captain Matthew Flinders RN was an English navigator and cartographer, who was the leader of the first circumnavigation of Australia and identified it as a continent. Flinders made three voyages to the southern ocean between 1791 and 1810. In the second voyage, George Bass and Flinders confirmed that Van Diemen's Land (now Tasmania) was an island. In the third voyage, Flinders circumnavigated the mainland of what was to be called Australia, accompanied by Aboriginal man Bungaree.
Who discovered radioactivity?
Antoine Henri Becquerel (15 December 1852 – 25 August 1908) was a French physicist, Nobel laureate, and the first person to discover evidence of radioactivity. For work in this field he, along with Marie Skłodowska-Curie and Pierre Curie, received the 1903 Nobel Prize in Physics. The SI unit for radioactivity, the becquerel (Bq), is named after him.
Who Discovered the magnetic field?
Hans Christian Oersted
Danish physicist and chemist Hans Christian Oersted (1777-1851) discovers in 1820 that electric current affects a compass needle and create magnetic fields. He was the first scientist to find the connection between electricity and magnetism. He is remembered today for Oersted's Law.
Who coined the term "gas"?
Cornelis van Niel
Julius von Mayer
Jan van Helmont
Jan Baptist van Helmont (1580–1644) was a Flemish chemist, physiologist, and physician. He worked during the years just after Paracelsus and the rise of iatrochemistry, and is sometimes considered to be "the founder of pneumatic chemistry". Van Helmont is remembered today largely for his ideas on spontaneous generation, his 5-year tree experiment, and his introduction of the word "gas" (from the Greek word chaos) into the vocabulary of science.