Mikhail Pismannik

Ten steps from the round pillar, in the ruins of the old fortress of Kum-Basan-Kala, secret messages are hidden, which must be delivered abroad. For these documents, foreign intelligence sends its spy. The film tells about the events that took place in the old fortress.

Soviet propaganda film about Alexei, a village boy who comes to Odesa to earn money in 1901. While still on the train, the hero gets acquainted with a young worker Mitya and witnesses the arrest of the underground leader Savva, who distributed Lenin's newspaper "Iskra". The boy quickly gets used to the city, learns that one must fight for one's rights, and becomes one of the most active Leninists in Odesa.

Bubble chambers are typically used to record interactions between high-energy particles and the nuclei of the chamber’s working fluid, or to observe particle decays. In the former case, the working fluid also serves as the detection medium. When an ionizing particle enters the chamber, its trajectory is marked by a trail of vapor bubbles, which can then be photographed. The ability to visually analyze these events made it possible to discover particles that could not be detected by any other means. Most notably, this includes the cascade decays of strange particles, whose decay products were either fully or partially captured in the chamber images.

The film is about the creation of a new element in the Periodic Table — Nobelium — by Soviet scientists, and about the global significance of this discovery.