How did liquefied nitrous oxide freeze water in a red-hot crucible?. Explain that rapid evaporation removed heat while a vapour cushion prevented direct contact between the water and the hot platinum. Frame the account as a reported nineteenth-century experiment and include the pressure and temperature figures supplied by the source.
How liquefied nitrous oxide froze water in a red-hot crucible The nineteenth-century source reports that liquefied nitrous oxide, or laughing gas, could freeze water placed in a red-hot platinum crucible. The effect depended on two separate processes: rapid evaporation removed heat from the surround...
ViewHow was the enormous wooden cannon constructed, and what unusual materials or methods did its makers use?
What the text records The text mentions a famous large cannon made in 1528 at Ehrenbreitstein. It says the cannon was more than 17 feet long and fired a ball weighing 160 pounds. What it does not explain The passage does not say that the cannon was wooden, nor does it describe how it was constructed...
ViewHow liquefied nitrous oxide froze water and mercury inside a red-hot platinum crucible
The experiment The book says nitrous oxide, or “laughing-gas,” was first liquefied under a pressure of 450 pounds per square inch. When released, it rapidly tried to return to a gas, drawing heat from nearby objects and producing temperatures nearly 200 degrees below water’s freezing point. Under an...
ViewHow Sir Charles Blagden and other experimenters endured a room hot enough to cook steaks and roast eggs
A room hotter than boiling water The book reports that M. Tillet, Dr. Fordyce, and Sir Charles Blagden entered a room heated to more than 260°F. Blagden's pulse rose to 144 beats per minute, described as twice its usual rate, but the men suffered no harm. To demonstrate that the temperature reading ...
ViewThe book's account of an extraordinary experiment involving pressure, heat, or the transformation of matter
When pressure made heat produce extreme cold The book describes a remarkable experiment in which a gas was first liquefied under enormous pressure, then released. Nitrous oxide, or laughing-gas, was condensed at 450 pounds per square inch; when liberated, its rapid evaporation drew heat from its sur...
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