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"alexandrian" - 2 õppematerjali

Alchemy
4
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Alchemy

Alchemy combines elements of chemistry, physics, astrology, art, semiotics, metallurgy, medicine, mysticism and religion. 2) 3 goals of alchemy 1.transmutation of any metal into gold or silver 2.creating universal panacea, remedy what would cure all diseases and prolong life indefinetely. – philospher´s stone was the key in these goals 3. creating human life 3) Idea of making gold and silver. Where does it originate and / how to Western Europe? The idea of transmutation arose among the Alexandrian Greeks in the early centuries of the Christian era, then it passed to Arabs and then from Arabs to Western Europe. Since then realization was very important to all chemical workers down to the time of Paracelus and even later. 4)narrow and wider meaning of alchemy Narrow sense of the word, alchemy is pretended art of making gold and silver, or transmuting the base metals into the noble ones. Wider meaning that it stands forthe chemistry of middle ages.

Keeled → Inglise keel
2 allalaadimist
Tuuma energia
13
odt

Tuuma energia

water to steam. This steam pushes the steam turbine that is connected to a generator that converts the mechanical energy of the turbine to electrical energy. For this reason, the history of the steam engine and the steam turbine will also be included on this timeline. Also see the comparison page for Combustion, and the general Comparisons page for more information on the underlying processes of many alternative energy forms. At 100 BC an Alexandrian (Greek speaking) philosopher by the name of Ctesibius invented the piston ­ pump. During 1606, Italian scientist Giovanni Batista della Porta of Naples heated water in a flask until the water turned into steam. This steam filled the empty space of a closed tank of water with the only opening as a pipe from the depth of the water. The water was forced out because of the pressure of the expanding warm air. In the 1600's several scientists continued work on steam powered pumps.

Füüsika → Füüsika
22 allalaadimist


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