There are several types of multi-color white LEDs: di-, tri-, and tetrachromatic white LEDs. Several key factors that play among these different methods, include color stability, color rendering capability, and luminous efficacy. Often, higher efficiency will mean lower color rendering, presenting a trade-off between the luminous efficacy and color rendering. For example, the dichromatic white LEDs have the best luminous efficacy (120 lm/W), but the lowest color rendering capability. However, although tetrachromatic white LEDs have excellent color rendering capability, they often have poor luminous efficacy. Trichromatic white LEDs are in between, having both good luminous efficacy (>70 lm/W) and fair color rendering capability.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is a factor that may be different in the various types of multi-color red LEDs?
Ah, so.. unanswerable

Another instance of ancient humanism as an organised system of thought is found in the Gathas of Zarathustra, composed between 1,000 BCE – 600 BCE in Greater Iran. Zarathustra's philosophy in the Gathas lays out a conception of humankind as thinking beings dignified with choice and agency according to the intellect which each receives from Ahura Mazda (God in the form of supreme wisdom). The idea of Ahura Mazda as a non-intervening deistic divine God/Grand Architect of the universe tied with a unique eschatology and ethical system implying that each person is held morally responsible for their choices, made freely in this present life, in the afterlife. The importance placed on thought, action, responsibility, and a non-intervening creator was appealed to by, and inspired a number of, Enlightenment humanist thinkers in Europe such as Voltaire and Montesquieu.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What well know scholar was destroyed by Humanism?
Ah, so.. unanswerable

The Grey Cup was established in 1909 after being donated by Albert Grey, 4th Earl Grey, The Governor General of Canada as the championship of teams under the CRU for the Rugby Football Championship of Canada. Initially an amateur competition, it eventually became dominated by professional teams in the 1940s and early 1950s. The Ontario Rugby Football Union, the last amateur organization to compete for the trophy, withdrew from competition in 1954. The move ushered in the modern era of Canadian professional football.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When did professional teams begin to dominate the Canadian football championship?
Ah, so..
1940s and early 1950s