Input: Article: White LEDs can also be made by coating near-ultraviolet (NUV) LEDs with a mixture of high-efficiency europium-based phosphors that emit red and blue, plus copper and aluminium-doped zinc sulfide (ZnS:Cu, Al) that emits green. This is a method analogous to the way fluorescent lamps work. This method is less efficient than blue LEDs with YAG:Ce phosphor, as the Stokes shift is larger, so more energy is converted to heat, but yields light with better spectral characteristics, which render color better. Due to the higher radiative output of the ultraviolet LEDs than of the blue ones, both methods offer comparable brightness. A concern is that UV light may leak from a malfunctioning light source and cause harm to human eyes or skin.

Now answer this question: What are near-ultraviolet LEDs coated with to create white LED?

Output: copper and aluminium-doped zinc sulfide (ZnS:Cu, Al)

Article: In the United States, botanist Asa Gray an American colleague of Darwin negotiated with a Boston publisher for publication of an authorised American version, but learnt that two New York publishing firms were already planning to exploit the absence of international copyright to print Origin. Darwin was delighted by the popularity of the book, and asked Gray to keep any profits. Gray managed to negotiate a 5% royalty with Appleton's of New York, who got their edition out in mid January 1860, and the other two withdrew. In a May letter, Darwin mentioned a print run of 2,500 copies, but it is not clear if this referred to the first printing only as there were four that year.

Question: Why couldn't Asa Gray use a Boston publisher for an American version of On the Origin of Species?
Ans: two New York publishing firms were already planning to exploit the absence of international copyright to print Origin

Here is a question about this article: Mach argued that, in effect, the water experiment in an otherwise empty universe would remain flat. But if another object were introduced into this universe, perhaps a distant star, there would now be something relative to which the bucket could be seen as rotating. The water inside the bucket could possibly have a slight curve. To account for the curve that we observe, an increase in the number of objects in the universe also increases the curvature in the water. Mach argued that the momentum of an object, whether angular or linear, exists as a result of the sum of the effects of other objects in the universe (Mach's Principle).
What is the answer to this question: What does the increase in the number of objects in the universe do to the curvature of the water?
****
So... increases the curvature

The problem: Answer a question about this article:
Phillips released "Home" as his coronation song, while Sanchez released "Change Nothing". Phillips' "Home" has since become the best selling of all coronation songs.
What was Phillip's coronation song?
****
The answer: Home

Problem: Please answer a question about the following article about Institute of technology:
University of Engineering & Technology or University of Engineering Sciences are the recognized universities that grant Bachelor's and master's degrees in undergraduate and graduate studies respectively. The Bachelor of Science degree awarded by Universities of Engineering & Technology or University of Engineering Sciences are 4 years full-time program after finishing 13 years of education (international high school certificate) in Pakistan known as F.Sc equivalent to British system A-Level.
What's Pakistan's program called that's comparable to the British A Level?
A: F.Sc

Question: Read this and answer the question

Muhammad Ali Pasha evolved the military from one that convened under the tradition of the corvee to a great modernised army. He introduced conscription of the male peasantry in 19th century Egypt, and took a novel approach to create his great army, strengthening it with numbers and in skill. Education and training of the new soldiers was not an option; the new concepts were furthermore enforced by isolation. The men were held in barracks to avoid distraction of their growth as a military unit to be reckoned with. The resentment for the military way of life eventually faded from the men and a new ideology took hold, one of nationalism and pride. It was with the help of this newly reborn martial unit that Muhammad Ali imposed his rule over Egypt.

Why did military use barracks?
Answer:
to avoid distraction of their growth