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friction was so large that the weights went down very slowly, actu- ally they were slower than a piece of paper was falling. Winding them up again however was hard work, way too tough for James who had

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• The hard work of experimenting James Prescott Joule, William Thomson, and the mechanical equivalent of heat.

calcified metal (“calx”, usually weighed in powdered form) had a greater weight than the origi- nal piece of metal. Lavoisier also found that the process could be reversed, that is, when the calx was reduced

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• Antoine Laurent de Lavoisier and respiration

calcified metal (“calx”, usually weighed in powdered form) had a greater weight than the origi- nal piece of metal. Lavoisier also found that the process could be reversed, that is, when the calx was reduced

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• Lind and scurvy

frequently with a large wooden spoon. Finally, some vinegar, salt, and immediately before serv- ing, pieces of fine wheat bread are added (every- thing in proper proportions).” At first, the cooks had to be

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• Rumford and nutrition

member. Pen colours are differ- ent for each team. The teacher has written an instruction on each piece of newsprint such as “Write everything you know about energy” or “What’s in your kitchen and how does

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• Rumford and nutrition

calcified metal (“calx”, usually weighed in powdered form) had a greater weight than the origi- nal piece of metal. Lavoisier also found that the process could be reversed, that is, when the calx was reduced

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• Eijkman and Beri-Beri
• Lind and scurvy
• Liebig and nutrition
• Rumford and nutrition
• Antoine Laurent de Lavoisier and respiration
• Dr. Andreas Junk
• Dr. Andreas Junk

calcified metal (“calx”, usually weighed in powdered form) had a greater weight than the origi- nal piece of metal. Lavoisier also found that the process could be reversed, that is, when the calx was reduced

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• Eijkman and Beri-Beri

that if a tiny piece of incense is burned, it can be smelled throughout the room. As the room is significantly big- ger than the space the incense initially occupied, the initial piece has to be divided [...] parts. These calculations were intended to show how small the particles have to be that form the piece of incense (see Beer & Pricha 1997). Such a dis- cussion, however, remained on the level of simple [...] him [Ruther- ford, PH], almost as incredible, he would say, as if a fif- teen-inch shell fired at a piece of tissue paper bounced back and hit the gunner. That the military imagery and the incredulity are

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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

initially occupied, the initial piece has to be divided into more than 750.000.000 parts – these calculations were intended to show how small the particles have to be that form the piece of incense (see Beer & [...] the scattering of alpha particles, which came from radioactive ra- don-222 and were directed at a piece of gold foil. The scattering of the alpha particle should have only been deflected by one or two degrees [...] to him [Rutherford, PH], almost as incredible, he would say, as if a fifteen-inch shell fired at a piece of tissue paper bounced back and hit the gunner. That the military imagery and the in- credulity are

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• Rutherford’s Nuclear Atom

and started his work of solar cooking in 1767 building a miniature greenhouse ,in which he placed a pieces of fruits. This new technology called solar cooking. Horace continued his exper- iments with other

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• Mouchot and the solar cooker