Soviet inventions

fast breeder nuclear reactor under development in Russia

mainframe computers manufactured from 1959 to 1975

Russian board game

thumb|Photo of a model Sharopoyezd, 1932

Sitall (also known as Sitall CO-115M or Astrositall) is a crystalline glass-ceramic with ultra-low coefficient of thermal expansion (CTE). It was originally manufactured in the former Soviet Union and was used in the making of primary mirrors for the Russian Maksutov telescopes. It has a CTE of only 0 ± 1.5 °C−1 in the temperature range −60 to 60 °C, placing it in a small group of transparent materials with low CTE such as Vycor, Zerodur, CerVit and fused quartz.

DEMOS (Dialogovaya Edinaya Mobilnaya Operatsionnaya Sistema: ) is a Unix-like operating system developed in the Soviet Union. It is derived from Berkeley Software Distribution (BSD) Unix.

type of beverage enriched in gaseous oxygen