Brønlund's petroleum burner (IMAGE) University of Southern Denmark Caption Brønlund's petroleum burner was found in 1973.© Jørn Ladegaard Credit Jørn Ladegaard Usage Restrictions w credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.