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The timeline begins at the Bronze Age, as it is difficult to give even estimates for the timing of events prior to this, such as of the discovery of counting, natural numbers and arithmetic. To avoid overlap with timeline of historic inventions , the timeline does not list examples of documentation for manufactured substances and devices unless ...
1021 – Ibn al-Haytham (Alhacen) pioneers the experimental scientific method and experimental physics in his Book of Optics, where he devises the first scientific experiments on optics, including the first use of the camera obscura to prove that light travels in straight lines and the first experimental proof that visual perception is caused ...
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
Such discoveries are often a multi-step, multi-person process. Multiple discovery sometimes occurs when multiple research groups discover the same phenomenon at about the same time, and scientific priority is often disputed. The listings below include some of the most significant people and ideas by date of publication or experiment.
An image from John Dalton's A New System of Chemical Philosophy, the first modern explanation of atomic theory.. This timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.
1934 – Falsifiability as a criterion for evaluating new hypotheses is popularized by Karl Popper's The Logic of Scientific Discovery. 1937 – The first complete placebo trial is undertaken. The American pharmacologist Harry Gold, studying the effect of xanthines on cardiac pain, alternates them with a placebo and shows them to be ineffective ...
Louis Pasteur was a pioneer in chemistry, microbiology, immunology and vaccinology. pictore/DigitalVision Vectors via Getty ImagesSome of the greatest scientific discoveries haven’t resulted in ...
Timeline of scientific discoveries; Timeline of sociology This page was last edited on 18 June 2024, at 02:33 (UTC). Text is available under the Creative ...