↑Susan Wills, Steven R. Wills, Meteorology: Predicting the Weather, pp. 19-21, The Oliver Press, Inc., 2003 ISBN1881508617.
↑Jonathan Shectman, Groundbreaking Scientific Experiments, Inventions, and Discoveries of the 18th Century, pp. 248–49, Greenwood Publishing Group, 2003 ISBN0313320152.
↑Saito, Yoshio (June 2005). "A Discussion of Roemer's Discovery concerning the Speed of Light". AAPPS Bulletin. 15 (3): 9–17.
↑Neil Schlager; Josh Lauer (2001). Science and Its Times: 1700–1799. Gale Group. pp. 341–. ISBN978-0-7876-3936-5. In 1708 Fahrenheit visited Ole Romer (1644–1710). Since at least 1702 Romer had been making alcohol thermometers with two fixed points and a scale divided into equal increments. He impressed upon Fahrenheit the scientific importance of ...
↑ 7.07.17.2"World: Highest Temperature". Arizona State University, School of Geographical Sciences. November 12, 2007. Archived from the original on January 4, 2013. an Italian weather station in al 'Aziziyah (Libya) measured a temperature of 58 °C (136.4 °F) on September 13th 1922. "Although this record has gained general acceptance as the world's highest temperature recorded under standard conditions, the validity of the extreme has been questioned."