Top 10 tech­ni­cal facts

Zinc and copper. Brass is a metallic alloy that is made of copper and zinc. The proportions of zinc and copper can vary to create different types of brass alloys with varying mechanical and electrical properties.

Buran (Snowstorm or Blizzard) was the first spaceplane to be produced as part of the Soviet Buran programme. OK-1K1 completed one unmanned spaceflight in 1988, and was destroyed in 2002 It remains the only Soviet reusable spacecraft to be launched into space.

Argentina maintains the most permanent polar stations - 6, Chile - 5, Russia - 5.

IBM American company, which is one of the oldest IT companies in the world - developed many key technologies used in computer science, like hard drive, cursor, floppy disk.

Ctesibius or Ktesibios or Tesibius was a Greek inventor and mathematician in Alexandria, Ptolemaic Egypt. He wrote the first treatises on the science of compressed air and its uses in pumps (and even cannons). This, in combination with his work on the elasticity of air, earned him the title of "father of pneumatics."

Motorola. In 1930, Paul and Joseph Galvin together with William Lear developed the first car radio on the dashboard and called it "Motorola". The word "Motorola" meant "sound in motion". The first part pointed to the engine, the second part was the popular suffix "ola"

V (volt). The International System of Units (abbreviated as SI) is the modern form of the metric system, and is the most widely used system of measurement. It comprises a coherent system of units of measurement built on seven base units (ampere, kelvin, second, metre, kilogram, candela, mole) and a set of twenty decimal prefixes to the unit names and unit symbols.

Samsung Electronics is a multinational electronics company headquartered in Suwon, South Korea. It is the flagship company of the Samsung Group, with assembly plants and sales networks in 80 countries. It is the world's largest information technology company and chipmaker by revenue.

Estimate the number of extraterrestrial civilizations in the Milky Way galaxy. The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy. The equation was written in 1961 by Frank Drake, not for purposes of quantifying the number of civilizations, but as a way to stimulate scientific dialogue at the first scientific meeting on the search for extraterrestrial intelligence (SETI). The equation summarizes the main concepts which scientists must contemplate when considering the question of other radio-communicative life.

Compact Disc. The compact disc (CD for short) is an optical memory medium, which was introduced in the early 1980s for digital music storage by Philips/PolyGram and Sony, with a view to replacing the vinyl record.