QUES: Later wax effigies include a likeness of Horatio, Viscount Nelson, wearing some of his own clothes and another of Prime Minister William Pitt, Earl of Chatham, modelled by the American-born sculptor Patience Wright.[citation needed] During recent conservation of Elizabeth I's effigy, a unique corset dating from 1603 was found on the figure and is now displayed separately.[citation needed]

Who never modelled the effigies in the museum?
What is the answer?
ANS: unanswerable
QUES: Luminous efficacy of a light source may be defined in two ways. The radiant luminous efficacy (LER) is the ratio of the visible light flux emitted (the luminous flux) to the total power radiated over all wavelengths. The source luminous efficacy (LES) is the ratio of the visible light flux emitted (the luminous flux) to the total power input to the source, such as a lamp. Visible light is measured in lumens, a unit which is defined in part by the differing sensitivity of the human eye to different wavelengths of light. Not all wavelengths of visible electromagnetic energy are equally effective at stimulating the human eye; the luminous efficacy of radiant energy (LER) is a measure of how well the distribution of energy matches the perception of the eye. The units of luminous efficacy are "lumens per watt" (lpw). The maximum LER possible is 683 lm/W for monochromatic green light at 555 nanometers wavelength, the peak sensitivity of the human eye.

What does the acronym LES refer to?
What is the answer?
ANS: source luminous efficacy
QUES: Comcast is sometimes described as a family business. Brian L. Roberts, Chairman, President, and CEO of Comcast, is son of co-founder Ralph Roberts. Roberts owns or controls just over 1% of all Comcast shares but all of the Class B supervoting shares, which gives him an "undilutable 33% voting power over the company". Legal expert Susan P. Crawford has said this gives him "effective control over its [Comcast's] every step". In 2010, he was one of the highest-paid executives in the United States, with total compensation of about $31 million.

Who co-founded Comcast?
What is the answer?
ANS:
Ralph Roberts