QUES: The most accurate timekeeping devices are atomic clocks, which are accurate to seconds in many millions of years, and are used to calibrate other clocks and timekeeping instruments. Atomic clocks use the frequency of electronic transitions in certain atoms to measure the second. One of the most common atoms used is caesium, most modern atomic clocks probe caesium with microwaves to determine the frequency of these electron vibrations. Since 1967, the International System of Measurements bases its unit of time, the second, on the properties of caesium atoms. SI defines the second as 9,192,631,770 cycles of the radiation that corresponds to the transition between two electron spin energy levels of the ground state of the 133Cs atom.
Which timekeeping devices are the most accurate?

ANS: atomic clocks

QUES: Philadelphia's an annualized unemployment rate was 7.8% in 2014, down from 10.0%the previous year. This is higher than the national average of 6.2%. Similarly, the rate of new jobs added to the city's economy lagged behind the national job growth. In 2014, about 8,800 jobs were added to the city's economy. Sectors with the largest number of jobs added were in education and health services, leisure and hospitality, and professional and business services. Declines were seen in the city's manufacturing and government sectors.
How many jobs were gained in 2014?

ANS: 8,800

QUES: On 3 December 1963, US President Lyndon B. Johnson posthumously awarded him the Presidential Medal of Freedom, the United States' highest civilian award, in recognition of the good relationship between Pope John XXIII and the United States of America. In his speech on 6 December 1963, Johnson said: "I have also determined to confer the Presidential Medal of Freedom posthumously on another noble man whose death we mourned 6 months ago: His Holiness, Pope John XXIII. He was a man of simple origins, of simple faith, of simple charity. In this exalted office he was still the gentle pastor. He believed in discussion and persuasion. He profoundly respected the dignity of man. He gave the world immortal statements of the rights of man, of the obligations of men to each other, of their duty to strive for a world community in which all can live in peace and fraternal friendship. His goodness reached across temporal boundaries to warm the hearts of men of all nations and of all faiths".
How did Pope John XXIII describe Lynden B. Johnson?

ANS: unanswerable

QUES: His birthday (14 December 1895) was the 34th anniversary of the death of his great-grandfather, Prince Albert, the Prince Consort. Uncertain of how the Prince Consort's widow, Queen Victoria, would take the news of the birth, the Prince of Wales wrote to the Duke of York that the Queen had been "rather distressed". Two days later, he wrote again: "I really think it would gratify her if you yourself proposed the name Albert to her". Queen Victoria was mollified by the proposal to name the new baby Albert, and wrote to the Duchess of York: "I am all impatience to see the new one, born on such a sad day but rather more dear to me, especially as he will be called by that dear name which is a byword for all that is great and good". Consequently, he was baptised "Albert Frederick Arthur George" at St. Mary Magdalene's Church near Sandringham three months later.[a] As a great-grandson of Queen Victoria, he was known formally as His Highness Prince Albert of York from birth. Within the family, he was known informally as "Bertie". His maternal grandmother, the Duchess of Teck, did not like the first name the baby had been given, and she wrote prophetically that she hoped the last name "may supplant the less favoured one".
Who was the Duchess of Teck?

ANS:
unanswerable