Historical aspects of the specific properties of the melting thermodynamics and superfluid state of helium are discussed.

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Keywords: helium, melting, superfluidity PACS: 01.65.+g, 05.30.Jp, 67.25.−k (all) DOI: 10.3367/UFNe.2024.02.039650 URL: https://ufn.ru/en/articles/2024/4/b/ Citation: Stishov S M "Notes on the properties of helium" Phys. Usp. 67 (4) (2024) Received: 5th, October 2023, revised: 13th, February 2024, accepted: 16th, February 2024 Оригинал: Стишов С М «Заметки о свойствах гелия» УФН 194 360–364 (2024); DOI: 10.3367/UFNr.2024.02.039650