Brass, which is an alloy of copper and zinc, has been used since at least the 10th century BC in Judea and by the 7th century BC in Ancient Greece. Zinc metal was not produced on a large scale until the 12th century in India and was unknown to Europe until the end of the 16th century. The mines of Rajasthan have given definite evidence of zinc production going back to the 6th century BC. To date, the oldest evidence of pure zinc comes from Zawar, in Rajasthan, as early as the 9th century AD when a distillation process was employed to make pure zinc. Alchemists burned zinc in air to form what they called "philosopher's wool" or "white snow".
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What were the names given to zinc by early alchemists?
Ah, so.. "philosopher's wool" or "white snow"

Czech distinguishes three gendersmasculine, feminine, and neuterand the masculine gender is subdivided into animate and inanimate. With few exceptions, feminine nouns in the nominative case end in -a, -e, or -ost; neuter nouns in -o, -e, or -i, and masculine nouns in a consonant. Adjectives agree in gender and animacy (for masculine nouns in the accusative or genitive singular and the nominative plural) with the nouns they modify. The main effect of gender in Czech is the difference in noun and adjective declension, but other effects include past-tense verb endings: for example, delal (he did, or made); delala (she did, or made) and delalo (it did, or made).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What do Czech adjectives agree with in the nouns they modify?
Ah, so.. gender and animacy

Near-infrared is the region closest in wavelength to the radiation detectable by the human eye, mid- and far-infrared are progressively further from the visible spectrum. Other definitions follow different physical mechanisms (emission peaks, vs. bands, water absorption) and the newest follow technical reasons (the common silicon detectors are sensitive to about 1,050 nm, while InGaAs's sensitivity starts around 950 nm and ends between 1,700 and 2,600 nm, depending on the specific configuration). Unfortunately, international standards for these specifications are not currently available.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Along with the emission peaks and vs. bands mechanisms, what other physical mechanism is used to define common silicon detectors?
Ah, so..
unanswerable