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Yurt

A circular, domed, portable tent covered by felt, typically used by nomadic peoples.

Trimethylamine N(CH₃)₃

A tertiary amine with a characteristic unpleasant odour, occurring in spoiled food.

Helicopter experiment (Oszkár Asboth, 1928)

As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.

Formamide (methanamide) (HCONH₂)

A colourless, slightly viscous, hygroscopic liquid used in the production of formic acid, hydrogen cyanide and other organic compounds.

D-ribose (C₅H₁₀O₅)

The open-chain version of ribose, which occurs naturally in nucleic acids, coenzymes, nucleotides and nucleosides.

Carbamide (urea) (CO(NH₂)₂)

An organic compound in the urine of mammals, used in the production of fertilisers as a source of nitrogen.

Chlorine (Cl₂)

A yellow-green toxic gas with a strong odour, one of the halogens.

Sulphur dioxide (SO₂)

Sulphur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulphuric acid.

Bromofluorochloromethane (CHClBrF)

The molecule has two enantiomers: stereoisomers that are mirror images of each other and are not superimposable.

Iodine (I₂)

A solid, grey substance which sublimates when heated. Its solution in alcohol is called tincture of iodine, it is a disinfectant.

Hydrogen-fluoride (HF)

One of the hydrogen halides, a highly aggressive substance - it even attacks glass.

Navigation in space

The animation helps to develop space perception and navigation in space using space coordinates.

Eurasian Avars (8th century)

The Avars established a stable empire in the Carpathian Basin between the 6th-8th centuries.

Benzene (C₆H₆)

Benzene is the simplest aromatic hydrocarbon.

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