The Vatican eventually sought to clarify matters by formalising the practice of fumata nera (black smoke) and fumata bianca (white smoke). Initially, damp straw and tar were added to the burning ...

Black smoke means a new pope has not been elected. White smoke means there is a new pope. So where does this tradition come from – and how do they achieve the different coloured smoke?

Here's what to know about the tradition of black and white smoke in conjunction with the selection of a new pope. What is a papal conclave? A papal conclave is an election to choose a new pope, held ...

Meanwhile, white smoke is produced using a much cleaner fuel mix and a more powerful oxidiser. Potassium chlorate (KClO₃) — even more reactive than perchlorate — ensures a hot, vigorous burn.

The Art—and Chemistry—of White Smoke Creating white smoke requires a different kind of precision. It generally forms when fires produce vapor or when combustion is cleaner.

White smoke poured from the chimney of the Sistine Chapel and the great bells of St. Peter’s Basilica tolled Thursday after cardinals elected Prevost as the 267th pope to lead the Catholic ...

For three votes, the smoke spewed out in thick black billows, indicating a new pope has yet to be chosen. The conclave needs 77 votes, or a two-thirds majority from 115 cardinal-electors, for a ...

White smoke emerges from the chimney atop the Sistine Chapel, announcing the election of the new Pope by the Conclave at the Vatican, May 08, 2025. LONDON ...

White smoke was seen emerging from the chimney above the Sistine Chapel. This means a new pontiff has been elected on the second day of the conclave.

The use of chemicals to ensure either black or white smoke was introduced after the 1958 conclave when damp straw added to papers from an unsuccessful ballot did not ignite at first.