Question: Polarization is predictable from an antenna's geometry, although in some cases it is not at all obvious (such as for the quad antenna). An antenna's linear polarization is generally along the direction (as viewed from the receiving location) of the antenna's currents when such a direction can be defined. For instance, a vertical whip antenna or Wi-Fi antenna vertically oriented will transmit and receive in the vertical polarization. Antennas with horizontal elements, such as most rooftop TV antennas in the United States, are horizontally polarized (broadcast TV in the U.S. usually uses horizontal polarization). Even when the antenna system has a vertical orientation, such as an array of horizontal dipole antennas, the polarization is in the horizontal direction corresponding to the current flow. The polarization of a commercial antenna is an essential specification.
Is there an answer to this question: What is a more complicated type of polarization from an antenna's geometry?

Answer: quad antenna

Question: The biographical tradition asserts that Virgil began the hexameter Eclogues (or Bucolics) in 42 BC and it is thought that the collection was published around 3938 BC, although this is controversial. The Eclogues (from the Greek for "selections") are a group of ten poems roughly modeled on the bucolic hexameter poetry ("pastoral poetry") of the Hellenistic poet Theocritus. After his victory in the Battle of Philippi in 42 BC, fought against the army led by the assassins of Julius Caesar, Octavian tried to pay off his veterans with land expropriated from towns in northern Italy, supposedly including, according to the tradition, an estate near Mantua belonging to Virgil. The loss of his family farm and the attempt through poetic petitions to regain his property have traditionally been seen as Virgil's motives in the composition of the Eclogues. This is now thought to be an unsupported inference from interpretations of the Eclogues. In Eclogues 1 and 9, Virgil indeed dramatizes the contrasting feelings caused by the brutality of the land expropriations through pastoral idiom, but offers no indisputable evidence of the supposed biographic incident. While some readers have identified the poet himself with various characters and their vicissitudes, whether gratitude by an old rustic to a new god (Ecl. 1), frustrated love by a rustic singer for a distant boy (his master's pet, Ecl. 2), or a master singer's claim to have composed several eclogues (Ecl. 5), modern scholars largely reject such efforts to garner biographical details from works of fiction, preferring to interpret an author's characters and themes as illustrations of contemporary life and thought. The ten Eclogues present traditional pastoral themes with a fresh perspective. Eclogues 1 and 9 address the land confiscations and their effects on the Italian countryside. 2 and 3 are pastoral and erotic, discussing both homosexual love (Ecl. 2) and attraction toward people of any gender (Ecl. 3). Eclogue 4, addressed to Asinius Pollio, the so-called "Messianic Eclogue" uses the imagery of the golden age in connection with the birth of a child (who the child was meant to be has been subject to debate). 5 and 8 describe the myth of Daphnis in a song contest, 6, the cosmic and mythological song of Silenus; 7, a heated poetic contest, and 10 the sufferings of the contemporary elegiac poet Cornelius Gallus. Virgil is credited[by whom?] in the Eclogues with establishing Arcadia as a poetic ideal that still resonates in Western literature and visual arts and setting the stage for the development of Latin pastoral by Calpurnius Siculus, Nemesianus, and later writers.
Is there an answer to this question: What theme did Virgil write about the most often?

Answer: unanswerable

Question: Objections to banning the use of incandescent light bulbs include the higher initial cost of alternatives and lower quality of light of fluorescent lamps. Some people have concerns about the health effects of fluorescent lamps. However, even though they contain mercury, the environmental performance of CFLs is much better than that of light bulbs, mostly because they consume much less energy and therefore strongly reduce the environmental impact of power production. LED lamps are even more efficient, and are free of mercury. They are regarded as the best solution in terms of cost effectiveness and robustness.
Is there an answer to this question: Is the environmental performance of CFLs better or worse than that of incandescents?

Answer: better

Question: In psychology, memory is the process in which information is encoded, stored, and retrieved. Encoding allows information from the outside world to be sensed in the form of chemical and physical stimuli. In the first stage the information must be changed so that it may be put into the encoding process. Storage is the second memory stage or process. This entails that information is maintained over short periods of time. Finally the third process is the retrieval of information that has been stored. Such information must be located and returned to the consciousness. Some retrieval attempts may be effortless due to the type of information, and other attempts to remember stored information may be more demanding for various reasons.
Is there an answer to this question: What is the fourth memory stage?

Answer:
unanswerable