Sentences with phrase «stable noble gases»

For example, they want to measure the planet's inventory of stable noble gases, such as xenon and krypton, which change little in abundance over billions of years and hold clues to planetary origins.

Not exact matches

Just as an atom with a full outer electron shell is a peculiarly unreactive noble gas, an outer shell with the right number of protons and neutrons makes a nucleus magically stable.

«It is thought Dr Dennis, who is head of stable isotope and noble gas geochemistry laboratories, came to the attention of detectives after corresponding with climate change sceptic bloggers in North America, while he also refused to sign a petition in support of Prof Phil Jones, the man at the centre of the controversy.»