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the sun’s light and spare the fire that is only meant to heat the house?” While he made the last preparations to teach his geometry class, he could not get his mind off the energy issue. The thought kept [...] every- day life—water, home, food…. Why, of course, food!” So, the mathematics teacher turned cook prepared a delicious stew for dinner and cooked it in his solar heater. The solar heater had become a solar [...] solar cooker proved strategic for the military, which could bet- ter conceal their positions as they prepared their food in smoke-free heaters. His report on his in- ventions to the government impressed the

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• Mouchot and the solar cooker

Mouchot’s solar devices were used by the French soldiers in North Africa. In this way they were preparing meals without a smoke. A few solar system were build and used to power stem engines. On September

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• Mouchot and the solar cooker

the one emitted from pure uranium. In a long and labori- ous analysis, they were finally able to prepare pure samples of the elements polonium and radium which were identified through their spectra. Radium

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• Maria Skłodowska-Curie: discoverer of two radioactive elements
• Joliot-Curie and artificial radioactivity
• Rutherford’s Nuclear Atom
• Dalton and the atoms
• Lavoisier and the conservation of mass
• Democritus and the atoms

you first sit in total darkness for at least a half hour with your eyes open. Then, you must be prepared to stare into the microscope and hold your eyes open without blinking for at least two minutes at [...] and it is even unclear whether this is an actual par- ticle. This assumption enabled Dalton to prepare an explanation of the stoichiometric laws he and others had formulated. According to this understanding [...] passed the metal foil (and in the course of the experiment they used gold foil as this could be prepared extremely thin), with some of them being scattered, very few of them were reflected. “In retrospect

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• Rutherford’s Nuclear Atom

Thompson, this appeared not really ac- ceptable – workers standing around waiting for a tool to be prepared were not his idea of efficiency. Thus, he demanded that the workers should work with a blunt drill [...] certainly publish his paper, even if there were not fully convinced. At the same time, he would also prepare a German version of the paper and submit it to the Annalen der Physik, the recent-ly founded German

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• Rumford and calorics

plans to venture to the European continent in search of military opportunities and advancement. In preparation for his departure from Britain in 1783, he successfully lobbied for promotion to full colonel and [...] attention to detail was very evident in every recipe, re- cording the cooking time, ingredient preparation, and utensils used. His work was some of the first in the sci- ence of nutrition, and Rumford Soup

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• Rumford and nutrition
• Rumford and calorics

particular by the French army in their North Afri- can colonies. These devices enabled the soldiers to prepare hot meals without producing smoke, a detail relevant from a military perspective. These cookers were [...] plans to venture to the European continent in search of military opportunities and advancement. In preparation for his departure from Britain in 1783, he successfully lobbied for promotion to full colonel and [...] attention to detail was very evident in every recipe, re- cording the cooking time, ingredient preparation, and utensils used. His work was some of the first in the sci- ence of nutrition, and Rumford Soup

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• Rumford and calorics

particular by the French army in their North Afri- can colonies. These devices enabled the soldiers to prepare hot meals without producing smoke, a detail relevant from a military perspective. These cookers were

File type

application/pdf

Referenced at

• Mouchot and the solar cooker

particular by the French army in their North Afri- can colonies. These devices enabled the soldiers to prepare hot meals without producing smoke, a detail relevant from a military perspective. These cookers were

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• The hard work of experimenting James Prescott Joule, William Thomson, and the mechanical equivalent of heat.
• Mouchot and the solar cooker
• Rumford and calorics

and it is even unclear whether this is an actual par- ticle. This assumption enabled Dalton to prepare an explanation of the stoichiometric laws he and others had formulated. According to this understanding [...] passed the metal foil (and in the course of the experiment they used gold foil as this could be prepared extremely thin), with some of them being scattered, very few of them were reflected. “In retrospect [...] the one emit- ted from pure Uranium. In a long and laborious analysis, they were finally able to prepare pure samples of the elements Polonium and Radium. Particularly Radium became central to the re- search

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• Democritus and the atoms