Al-Razi & Al Biruni Al-razi was a scientist, alchemist and chemist, and mathematician. He also discovered the compounds for alcohol and kerosene. Many books were accredited to him about alchemy. Al-biruni was well known for work in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist and linguist. He wrote 95 books on astronomy and mathematics. He devised his own way to determine the radius of the earth.
Al-Biruni was among those who laid the foundation for modern Trigonometry. He was a philosopher, geographer, astronomer, physicist and mathematician. Six hundred years before Galgeo, Al-Biruni discussed the theory of the earth rotating about its own axis. Al-Biruni carried out geodisic measurements and determined the earth's circumference in a most ingenious way.
Al-Biruni is regarded as one of the greatest scholars of the medieval Islamic era and was well versed in physics, mathematics, astronomy, and natural sciences, and also distinguished himself as a historian, chronologist and linguist.
(al biruni - Google Search) Abu al-Rayhan Muhammad ibn Ahmad al-Biruni is one of the greatest scholars of history. He was a Persian Muslim scholar of the 10th and 11th centuries. Al Biruni was an astronomer, a mathematician, a geographer, and many more. He believed he could get closer to God if he understood his creation.
Sol Invictus, an idol of the late Roman Empire: Hindu beliefs and practices, in al-Biruni’s view, were much like those of the ancient Greeks. Al-Biruni described Hindus as recognizing seven classes of spiritual beings who continually quarrel and fight. They occasionally had intercourse with human beings.