Properties of water water isotopes. Naturally occurring water is almost completely composed of the neutron-less hydrogen isotope protium. Only 155 ppm include deuterium ( or D), a hydrogen isotope with one neutron, and fewer than 20 parts per quintillion include tritium ( or T), which has two neutrons. Oxygen also has three stable isotopes, with present in 99.76%, in 0.04%, and in 0.2% of water molecules. Deuterium oxide, , is also known as heavy water because of its higher density. It is used in nuclear reactors as a neutron moderator. Tritium is radioactive, decaying with a half-life of 4500 days; exists in nature
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