Liquid helium Liquid helium At standard pressure, the chemical element helium exists in a liquid form only at the extremely low temperature of −270 °C (about 4 K or −452.2 °F). Its boiling point and critical point depend on which isotope of helium is present: the common isotope helium-4 or the rare isotope helium-3. These are the only two stable isotopes of helium. See the table below for the values of these physical quantities. The density of liquid helium-4 at its boiling point and a pressure of one atmosphere (101.3 kilopascals) is about 0.125 grams per cm, or about 1/8th the density
Boiling Point (1993 film) Boiling Point (1993 film) Boiling Point is a 1993 American action film written and directed by James B. Harris, and starring Wesley Snipes, Dennis Hopper, Lolita Davidovich and Viggo Mortensen. The film was released in the United States on April 16, 1993. This was James B. Harris' last film. It is based on the novel "Money Men" by former U.S. Secret Service agent Gerald Petievich, who co-wrote the screenplay. This film opens with Treasury officer Jimmy Mercer (Wesley Snipes) and his partner Brady (Dan Hedaya) doing some undercover work, when Mercer's fellow agent is shot and killed by a new