Big Bang nucleosynthesis amounts of the hydrogen isotope deuterium (H or D), the helium isotope helium-3 (He), and a very small amount of the lithium isotope lithium-7 (Li). In addition to these stable nuclei, two unstable or radioactive isotopes were also produced: the heavy hydrogen isotope tritium (H or T); and the beryllium isotope beryllium-7 (Be); but these unstable isotopes later decayed into He and Li, as above. Essentially all of the elements that are heavier than lithium were created much later, by stellar nucleosynthesis in evolving and exploding stars. There are several important characteristics of Big Bang nucleosynthesis (BBN): The key parameter
Tritium (programming language) transformation language. Much of this was based on his prior experience porting Wikipedia’s desktop website to the mobile web. Open Tritium is the open source implementation of the Tritium language. It was presented at O'Reilly Open Source Convention 2014 and the compiler is implemented in Go. Tritium takes as input HTML, XML, or JSON documents and outputs HTML, XML, or JSON data that has been transformed according to the rules defined in the Tritium script. Like JQuery, idiomatic Tritium code is structured around selecting a collection of elements via a CSS or XPath selector and then chaining a series of