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Map of the world in 1 AD, shortly after the end of the first century BC. The 1st century BC, also known as the last century BC and the last century BCE, started on the first day of 100 BC and ended on the last day of 1 BC. The AD/BC notation does not use a year zero; however, astronomical year numbering does use a zero, as well as a minus sign ...
The 21st century BC was a century that lasted from the year 2100 BC to 2001 BC. Events Ur-Nammu (seated) bestows governorship on Ḫašḫamer, patesi (high priest) of Iškun-Sin (cylinder seal impression, ca. 2100 BC).
- Bronze Age
- Iron Age
- 500 BC – 1 BC
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- 16th Century
- 17th Century
- 18th Century
- 1800–1849
Many early innovations of the Bronze Age were prompted by the increase in trade, and this also applies to the scientific advances of this period. For context, the major civilizations of this period are Egypt, Mesopotamia, and the Indus Valley, with Greece rising in importance towards the end of the third millennium BC. The Indus Valley script remai...
The following dates are approximations. 1. 700 BC: Pythagoras's theorem is discovered by Baudhayana in the Hindu Shulba Sutras in Upanishadic India. However, Indian mathematics, especially North Indian mathematics, generally did not have a tradition of communicating proofs, and it is not fully certain that Baudhayana or Apastamba knew of a proof.[c...
The following dates are approximations. 1. 500 BC: Hippasus, a Pythagorean, discovers irrational numbers. 2. 500 BC: Anaxagorasidentifies moonlight as reflected sunlight. 3. 5th century BC:The Greeks start experimenting with straightedge-and-compass constructions. 4. 5th century BC: The earliest documented mention of a spherical Earth comes from th...
Mathematics and astronomy flourish during the Golden Age of India (4th to 6th centuries AD) under the Gupta Empire. Meanwhile, Greece and its colonies have entered the Roman period in the last few decades of the preceding millennium, and Greek science is negatively impacted by the Fall of the Western Roman Empireand the economic decline that follow...
The Golden Age of Indian mathematics and astronomy continues after the end of the Gupta empire, especially in Southern India during the era of the Rashtrakuta, Western Chalukya and Vijayanagara empires of Karnataka, which variously patronised Hindu and Jain mathematicians. In addition, the Middle East enters the Islamic Golden Age through contact w...
11th century: Alhazen discovers the formula for the simplicial numbers defined as the sums of consecutive quartic powers.[citation needed]11th century: Alhazensystematically studies optics and refraction, which would later be important in making the connection between geometric (ray) optics and wave theory.11th century: Shen Kuo discovers atmospheric refraction and provides the correct explanation of rainbow phenomenon[citation needed]11th century: Shen Kuo discovers the concepts of true north and magnetic declination.The Scientific Revolutionoccurs in Europe around this period, greatly accelerating the progress of science and contributing to the rationalization of the natural sciences. 1. 16th century: Gerolamo Cardanosolves the general cubic equation (by reducing them to the case with zero quadratic term). 2. 16th century: Lodovico Ferrarisolves the general qu...
1600: William Gilbert: Earth's magnetic field.1608: Earliest record of an optical telescope.1609: Johannes Kepler: first two laws of planetary motion.1610: Galileo Galilei: Sidereus Nuncius: telescopic observations.1735: Carl Linnaeus described a new system for classifying plants in Systema Naturae.1745: Ewald Georg von Kleist first capacitor, the Leyden jar.1749 – 1789: Buffon wrote Histoire naturelle.1750: Joseph Black: describes latent heat.1802: Jean-Baptiste Lamarck: teleological evolution.1805: John Dalton: Atomic Theory in (chemistry).1820: Hans Christian Ørsted discovers that a current passed through a wire will deflect the needle of a compass, establishing the deep relationship between electricity and magnetism (electromagneti...1820: Michael Faraday and James Stoddart discover alloying iron with chromium produces a stainless steel resistant to oxidising elements (rust)..Events. c. 16,500 – c. 13,500 BC: Prehistoric hunters ( Paleo-Indians) migrate from Asia across the Bering strait land bridge to settle. 8000 BC: Ice age ending. Rising waters cover Bering land bridge. 5200 BC: The Stó:lō people are living alongside the Fraser River near what is now Mission, B.C.
1st century BC. Roman General Julius Caesar invades Great Britain for the first time, gaining a beachhead on the coast of Kent . Caesar invades for the second time, gaining a third of the country. These two invasions are known as Caesar's invasions of Britain .
The first case of infection involved a patient who had recently returned from Wuhan, Hubei, China. The first case of community transmission in Canada was confirmed in British Columbia on March 5, 2020.
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This page indexes the individual years pages.
