English chemist and clergyman Joseph Priestly isolated oxygen by shining daylight on mercuric oxide and gathering the fuel from the response. He observed that a candle burned extra brightly In this particular fuel, according to the RSC, due to oxygen's position in combustion. The temperature within the chamber will tumble. https://oxygen-chambers-therapy29517.idblogz.com/36371075/detailed-notes-on-hyperbaric-oxygen-chamber-cost