10 most difficult science riddlesScience quiz
Where is The Encyclopaedia Britannica produced?
The Britannica is the oldest English-language encyclopaedia still being produced (currently only in the online version). It was first published between 1768 and 1771 in Edinburgh, Scotland. In 1901, after it was taken over by an American firm, the Britannica shortened and simplified articles to broaden its appeal in the North American market. Although publication has been based in the United States since 1901, the Britannica has largely maintained British spelling.
Cavalieri's principle is used...
to compare the volumes of solids
to find pime numbers less than 2971
to find all prime numbers from interwal
to check if given number is prime or not
In geometry, Cavalieri's principle, a modern implementation of the method of indivisibles, named after Bonaventura Cavalieri, is in 3-dimensional case: Suppose two regions in three-space (solids) are included between two parallel planes. If every plane parallel to these two planes intersects both regions in cross-sections of equal area, then the two regions have equal volumes.
Who was the first to create a zoo and botanical garden for scientific study?
Throughout his conquests of Asia, Alexander the Great collected many plant and animal specimens for Aristotle’s research. This allowed Aristotle to develop in Athens the first zoo and botanical garden in existence.
What is deltiology?
Hobby of collecting postcards
Science of quantum equations
Science of wines
Field of medicine, about intestines
Officially the biggest collection postcards has got Mario Morby from Great Britain. Contains 1 000 265 pieces. It is officially record in Guinness Book of Records.
The study of the history, symbolism and usage of flags is called...
Vexillology is the scientific study of the history, symbolism and usage of flags or, by extension, any interest in flags in general. A person who studies flags is a vexillologist, one who designs flags is a vexillographer, and the art of flag-designing is called vexillography.
The Pauli exclusion principle describes the behavior of all..?
The Pauli exclusion principle is the quantum mechanical principle which states that two or more identical fermions (particles with half-integer spin) cannot occupy the same quantum state within a quantum system simultaneously. The Pauli exclusion principle describes the behavior of all fermions (particles with "half-integer spin"), while bosons (particles with "integer spin") are subject to other principles. Fermions include elementary particles such as quarks, electrons and neutrinos.
Which mathematician laid the foundations for abstract algebra (especially the group theory)?
Évariste Galois was a French mathematician born in Bourg-la-Reine. While still in his teens, he was able to determine a necessary and sufficient condition for a polynomial to be solvable by radicals, thereby solving a problem standing for 350 years. His work laid the foundations for Galois theory and group theory, two major branches of abstract algebra, and the subfield of Galois connections. He died at age 20 from wounds suffered in a duel.
Where does water boil at the temperature 37 °C (98.6 °F)?
in a microwave oven
at the Armstrong's line
at the Kármán line
on Mount Everest
The Armstrong limit or Armstrong's line is a measure of altitude above which atmospheric pressure is sufficiently low that water boils at the normal temperature of the human body. Humans absolutely cannot survive above this limit in an unpressurized environment. Above Earth, this begins at 18–19 km (11–12 mi; 59,000–62,000 ft) above sea level. The term is named after United States Air Force General Harry George Armstrong, who was the first to recognize this phenomenon
Which metal has the highest reflectivity and thermal conductivity?
Silver is a chemical element with symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.
Which material of the followings during stretching does thicker become perpendicular to the applied force?
Auxetics are structures or materials that have a negative Poisson's ratio. When stretched, they become thicker perpendicular to the applied force. This occurs due to their particular internal structure and the way this deforms when the sample is uniaxially loaded. Auxetics can be single molecules, crystals, or a particular structure of macroscopic matter.