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Empedocles also proved (at least to his own satisfaction) that air was a separate substance by observing that a bucket inverted in water did not become filled with water, a pocket of air remaining trapped inside. [10] Fire, earth, air, and water have become the most popular set of classical elements in modern interpretations.
Empedocles' philosophy is known best for originating the cosmogonic theory of the four classical elements. He also proposed forces he called Love and Strife which would mix and separate the elements, respectively. Empedocles challenged the practice of animal sacrifice and killing animals for food. He developed a distinctive doctrine of ...
White blood cells are decayed mucus in the blood that cause disease. Lungs pump blood through the body; the heart is merely a valve. Mental illness is the result of gas pressure on the brain from mucus decay. Fasting can cure insanity. Consuming rice causes leprosy. Dandruff is dried mucus. A mucus-free body never sweats.
Dihydrogen monoxide is a name for the water molecule, which comprises two hydrogen atoms and one oxygen atom (H 2 O).. The dihydrogen monoxide parody is a parody that involves referring to water by its unfamiliar chemical systematic name "dihydrogen monoxide" (DHMO, or the chemical formula H 2 O) and describing some properties of water in a particularly concerning manner — such as the ...
The word humor is a translation of Greek χυμός, [3] chymos (literally 'juice' or 'sap', metaphorically 'flavor'). Early texts on Indian Ayurveda medicine presented a theory of three or four humors (doṣas), [4] [5] which they sometimes linked with the five elements (pañca-bhūta): earth, water, fire, air, and space. [6]
The terrestrial region, according to Aristotle, consisted of concentric spheres of the four classical elements—earth, water, air, and fire. All bodies naturally moved in straight lines until they reached the sphere appropriate to their elemental composition—their natural place. All other terrestrial motions were non-natural, or violent. [27 ...
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
The earliest gold metallurgy is known from the Varna culture in Bulgaria, dating from c. 4600 BC. [6] Silver, copper, tin and meteoric iron can also be found native, allowing a limited amount of metalworking in ancient cultures. [7] Egyptian weapons made from meteoric iron in about 3000 BC were highly prized as "daggers from Heaven". [8]