Please answer this: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "In quantum mechanics and quantum field theory, the vacuum is defined as the state (that is, the solution to the equations of the theory) with the lowest possible energy (the ground state of the Hilbert space). In quantum electrodynamics this vacuum is referred to as 'QED vacuum' to distinguish it from the vacuum of quantum chromodynamics, denoted as QCD vacuum. QED vacuum is a state with no matter particles (hence the name), and also no photons. As described above, this state is impossible to achieve experimentally. (Even if every matter particle could somehow be removed from a volume, it would be impossible to eliminate all the blackbody photons.) Nonetheless, it provides a good model for realizable vacuum, and agrees with a number of experimental observations as described next."?
++++++++
Answer: Which field does not define a vacuum as also free of all photons?

Please answer this: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye."?
++++++++
Answer: What chemical reaction causes "color flash"?

Please answer this: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "From the 2000 census[update], 60,455 or 47.0% belonged to the Swiss Reformed Church, while 31,510 or 24.5% were Roman Catholic. Of the rest of the population, there were 1,874 members of an Orthodox church (or about 1.46% of the population), there were 229 persons (or about 0.18% of the population) who belonged to the Christian Catholic Church, and there were 5,531 persons (or about 4.30% of the population) who belonged to another Christian church. There were 324 persons (or about 0.25% of the population) who were Jewish, and 4,907 (or about 3.81% of the population) who were Muslim. There were 629 persons who were Buddhist, 1,430 persons who were Hindu and 177 persons who belonged to another church. 16,363 (or about 12.72% of the population) belonged to no church, are agnostic or atheist, and 7,855 persons (or about 6.11% of the population) did not answer the question. On 14 December 2014 the Haus der Religionen was inaugurated."?
++++++++
Answer:
6.11% of the population avoided?