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died there on 11 May 1686. However he had many activities and public functions, Guericke was able to find time to conduct various experiments in physics. Around the year 1650, he constructed the air pomp [...] the idea had been cor- rect!!! Otto thought about ways to make the barrel more solid but he couldn’t find any solution. But suddenly he had an idea! Iron! A barrel made of iron! The next day Otto went to [...] that squashed the barrel, then he was thinking in the right direction - then he would only have to find a body that was more solid than an iron bar- rel. Then he remembered one the ideas that Aristo- tle

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• Guericke and vacuum

two-hundred-and-eighty thou- sand prisoners in Javanese prisons, Eijkman managed to find the cure. Using the findings of Eijkman’s study, scientists were able to isolate a nutrient called thiamin, also [...] the research efforts, in either Java or the Netherlands, to find the exact cause of beriberi. Discussion 4 • What was Eijkman trying to find out with his different versions of diet for chickens? • Why [...] answers to the following questions. a) What was Eijkman trying to find out with his many versions of diet? b) Why could Eijkman not find an explanation? c) What advice would you have for Eijkman? Instructions:

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• Eijkman and Beri-Beri

Model: wiki.science-stories.org the mass of CO2, standard stoichiometric calculations could be used to find the mass of carbon in the original sample. One of Liebig’s most recognized and influential achievements [...] …………………………………… Actvity 4 The industrial production of Liebig’s meat extract was a poster. Please find more information in the website: http://blogs.princeton.edu/graphicarts/2007/09/from_beef_bouillo [...] increase the budget of the Bavarian army while increasing the number of troops and their wages, he had to find a means to re- duce costs. The first measure was to lower the costs of the soldiers’ uniforms by employing

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• Liebig and nutrition

several groups of three chemical elements that behave very similar to each other in reactions. He could find several combina- tions of elements, and there were always three elements. Moreover, these elements [...] to identify several new elements. The more elements were known to chemists, the easier it became to find sub- stances that behaved similar. Figure 3 Mendeleev’s structuring of the elements. http://upload [...] undiscovered” (Moseley 1913, 713). In some sense, Moseley acts very similar to Mendeleev – he was able to find another math- ematical relation that described properties of the atoms, however, there were some gaps

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• Mendeleev and the Periodic System

heat was instead something immate- rial. Rumford went to his desk and started to write down his findings. He knew that his claim would meet severe opposition. Therefore, he decided that he would not publish [...] understanding of heat being a substance, being caloric. Even though no one contradicted his experimental find- ings, scientists kept relying on the material theory of heat for more than three decades after the

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• Rumford and calorics

them back to City Hall to be regis- tered. In an hour they had arrested all the beggars they could find—2600! That day marked the transformation of the city of Munich. The next morning, the by-now-former [...] Elector in June of 1792 and requested an inquiry in order to dispel the accusations. Even though the findings of the Commission ruled, narrowly, in Sir Benjamin’s favor, the antagonistic, unsettled situation

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• Rumford and nutrition

future tasks to develop the under- standing of the underlying truths that explain our empirical findings. You see, chemistry is not yet finished.” The boy did not seem to be too pleased with this response [...] was about to deliver a lecture to the prestigious Royal Institution, a lecture that condensed the findings of his researches of the last years, re- searches that were triggered by this question the schoolboy [...] that could be composed (or produced by de- composing other substances). Instead, he was trying to find mathematical rules in the chemi- cal reactions that went beyond the recipe ap- proach. The easiest

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• Dalton and the atoms

his wife Marie survived and, after the French Revolution, she continued to publish his chemi- cal findings. Story Lavoisier and the conservation of mass was edited by Brigitte van Tiggelen and it is based

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• Lavoisier and the conservation of mass

used a radium source to project alpha particles at a gold foil mounted on a thin, glass plate and find that about one in twenty-thousand of the alpha particles have their directions changed to such an

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• Rutherford’s Nuclear Atom

Dmitris Periodentraum 1 Storytelling Teaching Model: http://science-story-telling.eu Dmitris Periodentraum 12. Juli 1849 in Tobolsk, Sibirien: ganz aufgeregt hielt der 15-jährige Dmitri Mendeleev sein

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• Mendeleev and the Periodic System