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[A new interlinear poem will be available each Monday: Weekly Interlinear Poem .]
Use the dictionary, the acronym finder, and the word origins dictionary (links above) as needed. A new quiz is available each Monday through Thursday. This is the quiz for October 2.
The first permanent photograph was made in 1826 by Joseph Niépce, who built on a discovery by Johann Schultz. A silver and chalk mixture darkens under exposure to light. Niépce and Daguerre refined this process. Daguerre first exposed silver-coated copper plates to iodine, obtaining silver iodide. Then he exposed them to light for several minutes. Then he coated the plate with mercury vapor heated to 75° Celsius to amalgamate the mercury with the silver, finally fixing the image in salt water. These ideas led to the famous Daguerreotype.
The resultant plate produced a mirror-like exact reproduction of the scene. The image needed protection from the air and fingerprints, so it was encased in a glass-fronted box.
1. The base plate of a Daguerreotype isA. copper.2. Fix in this context means
D. silverA. repair.3. Amalgamate means
B. preserve colors or shades.
D. arrange.A. dissolve.4. A silver and chalk mixture
D. merge into a single substance.A. fixes the image.
B. makes a mirror-like reproduction.
C. is sensitive to light.
D. needs protection from the air.
The information comes from Wikipedia.
Write down your answers and then see Answer Key below.
Answer Key: 1-A..........2-B..........3-D..........4-C
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