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movement into the metal tube. Please hold firmly with one hand the metal tube. With the other hand move the metal rod back and forth into the metal tube, for one minute. Repeat the same procedure for two

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• Rumford and calorics

temperature, he moved the balance to a much colder room. After two days, he measured the bottles to find that, even with the water frozen, they were all the same weight as before. He moved the balance back [...] glass capillary, a drop of alcohol is placed. When the pressure in both arms is different, the drop moves towards the side of lower pressure. Consequently, the gas at lower pressure is compressed whilst the [...] to the absorption of radiant heat and the resulting different pressure, the alcohol drop starts to move. The experimenter increases the distance between the stronger heat source and the thermoscope until

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• Rumford and calorics

effects of fluids in motion, and on the heat acquired by bodies moving rapidly through the air. They found the heat generated by a body moving at one mile per second through the air sufficient to account [...] glass capillary, a drop of alcohol is placed. When the pressure in both arms is different, the drop moves towards the side of lower pressure. Consequently, the gas at lower pressure is compressed whilst the [...] to the absorption of radiant heat and the resulting different pressure, the alcohol drop starts to move. The experimenter increases the distance between the stronger heat source and the thermoscope until

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

Frankfurt, where in 1668, Maria gave birth to their first daughter, Johanna Helena. Soon after, they moved to Nuremberg, the hometown of Graff. There, Maria Sibylla continued the study the life cycle of b [...] Chistopher named her work as "a magnificent" … In 1681, her stepfather Marrel died, and Maria Sybilla moved from Nuremberg to Frankfurt to help her mother. Marriage of Graffs returned to that city to engage [...] same year (1685), Maria Sibylla broke up with her husband, and with her mother and two daughters moved to the property Wieuwerd in the Netherlands, hoping for admission to the Community of Labadysts (radical

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• Sybilla Merian and Cocoons

Frankfurt, where in 1668, Maria gave birth to their first daughter, Johanna Helena. Soon after, they moved to Nuremberg, the hometown of Graff. There, Maria Sibylla continued the study the life cycle of b [...] Chistopher named her work as "a magnificent" … In 1681, her stepfather Marrel died, and Maria Sybilla moved from Nuremberg to Frankfurt to help her mother. Marriage of Graffs returned to that city to engage [...] same year (1685), Maria Sibylla broke up with her husband, and with her mother and two daughters moved to the property Wieuwerd in the Netherlands, hoping for admission to the Community of Labadysts (radical

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• Sybilla Merian and Cocoons

diseases were beriberi (a word derived from the language of Polynesian natives meaning “I can’t move, I can’t move”) and scurvy, an illness well known to seamen. It took researchers until 1912 to uncover the [...] that the white rice contained the germ that caused beriberi and that the red coating, which was re- moved by polishing the rice, provided an antitoxin. This point is crucial to understanding why successful

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• Antoine Laurent de Lavoisier and respiration

silkworm breed?” Sibylla shook her head and said: “No, I would only like to draw the silkworms. They move so slowly and look so pretty, I would love to try it.” The old man first chuckled and then coughed: [...] often went to the attic in the coming weeks in order to observe and draw her silk- worms. The animals moved a little in their box and ate the leaves, and now and then, their skin broke and a new caterpillar [...] she tried to draw a real- ly good picture of a silkworm, which wasn’t exactly easy even though they moved very slowly. Sometimes she would start to draw the strange leaves on the branches that the silk- worms

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• Sybilla Merian and Cocoons

glass capillary, a drop of alcohol is placed. When the pressure in both arms is different, the drop moves towards the side of lower pressure. Consequently, the gas at lower pressure is compressed whilst the [...] to the absorption of radiant heat and the resulting different pressure, the alcohol drop starts to move. The experimenter increases the distance between the stronger heat source and the thermoscope until

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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

glass capillary, a drop of alcohol is placed. When the pressure in both arms is different, the drop moves towards the side of lower pressure. Consequently, the gas at lower pressure is compressed whilst the [...] to the absorption of radiant heat and the resulting different pressure, the alcohol drop starts to move. The experimenter increases the distance between the stronger heat source and the thermoscope until

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• Mouchot and the solar cooker

an one even though the movement of the Earth was not noticeable and the also question of how the moving Earth could possibly pull the moon with her remained. Another remaining objection concerned the slowing [...] even harder, the men sweated while they pumped and then - nothing happened! The men were not able to move the lever any fur- ther. In the end one of the men said something that sounded like music to Otto:

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• Guericke and vacuum