Problem: Infrared:

In infrared photography, infrared filters are used to capture the near-infrared spectrum. Digital cameras often use infrared blockers. Cheaper digital cameras and camera phones have less effective filters and can "see" intense near-infrared, appearing as a bright purple-white color. This is especially pronounced when taking pictures of subjects near IR-bright areas (such as near a lamp), where the resulting infrared interference can wash out the image. There is also a technique called 'T-ray' imaging, which is imaging using far-infrared or terahertz radiation. Lack of bright sources can make terahertz photography more challenging than most other infrared imaging techniques. Recently T-ray imaging has been of considerable interest due to a number of new developments such as terahertz time-domain spectroscopy.

What is used in infrared photography to capture the near-infrared spectrum?
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A: infrared filters

Problem: History of India:

Akbar's son, Jahangir more or less followed father's policy. The Mughal dynasty ruled most of the Indian subcontinent by 1600. The reign of Shah Jahan was the golden age of Mughal architecture. He erected several large monuments, the most famous of which is the Taj Mahal at Agra, as well as the Moti Masjid, Agra, the Red Fort, the Jama Masjid, Delhi, and the Lahore Fort. The Mughal Empire reached the zenith of its territorial expanse during the reign of Aurangzeb and also started its terminal decline in his reign due to Maratha military resurgence under Shivaji. Historian Sir. J.N. Sarkar wrote, "All seemed to have been gained by Aurangzeb now, but in reality all was lost." The same was echoed by Vincent Smith: "The Deccan proved to be the graveyard not only of Aurangzeb's body but also of his empire".

What famous monument did Shah Jahan build at Agra?
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A: Taj Mahal

Problem: Karl Popper:

He worked in street construction for a short amount of time, but was unable to cope with the heavy labour. Continuing to attend university as a guest student, he started an apprenticeship as cabinetmaker, which he completed as a journeyman. He was dreaming at that time of starting a daycare facility for children, for which he assumed the ability to make furniture might be useful. After that he did voluntary service in one of psychoanalyst Alfred Adler's clinics for children. In 1922, he did his matura by way of a second chance education and finally joined the University as an ordinary student. He completed his examination as an elementary teacher in 1924 and started working at an after-school care club for socially endangered children. In 1925, he went to the newly founded Padagogisches Institut and continued studying philosophy and psychology. Around that time he started courting Josefine Anna Henninger, who later became his wife.

What trade did Popper enter as an apprentice?
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A: cabinetmaker

Problem: Bern:

The Canton of Bern school system provides one year of non-obligatory kindergarten, followed by six years of primary school. This is followed by three years of obligatory lower secondary school where the pupils are separated according to ability and aptitude. Following the lower secondary pupils may attend additional schooling or they may enter an apprenticeship.

Do you have to go to the one year of kindergarten?
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A:
non