Editing Burning glass (section)

=== Religion: sacred fire ===
In various religions settings, a burning glass is used to set off some sort of [[Fire worship|sacred fire]].

From the 7th to the 16th centuries, a burning glass was used by Christians to set off the [[Easter Fire]] during the [[Easter vigil]]. Thus, [[Saint Boniface]] explained to [[Pope Zachary]] that he produced the new fire of Holy Saturday by means of a crystal lens concentrating the rays of the sun. This process was also mentioned in liturgical books until the [[Roman Pontifical]] of 1561.<ref>{{Cite web|last=de Villiers|first=Henri|date=30 March 2021|title=La réforme de la Semaine Sainte de 1955 – 7ème partie – La Vigile pascale|url=https://schola-sainte-cecile.com/2021/03/31/la-reforme-de-la-semaine-sainte-de-1955-7eme-partie-la-vigile-pascale/|access-date=2021-04-26|website=Schola Sainte-Cécile Official website|language=fr-FR}}</ref>

In [[Cambodia]], a burning glass has also been used since ancient times for the [[cremation]] of kings and most recently for the funeral of [[King Sihanouk]]. The crematorium of the king is traditionally prepared by the [[Baku (brahmin)|Bakus brahmin]] from the [[Royal Palace of Cambodia|Royal Palace]] on the last day of the week-long funeral. Small pieces of fragrant [[agarwood]] are placed beneath the magnifying glass until it ignites. The incandescent wood is used to light candles and pass on the fire to the attendees, who usually take their lit candles home.<ref>{{Cite web|title=The King and Queen Mother offer fire to His Majesty the King|url=https://www.rfa.org/khmer/indepth/late-ex-king-cremation-02042013072246.html|url-status=live|access-date=2021-04-26|website=Radio Free Asia|language=en|archive-url=https://web.archive.org/web/20210426143845/https://www.rfa.org/khmer/indepth/late-ex-king-cremation-02042013072246.html |archive-date=2021-04-26 }}</ref>