Article: Although the Spanish Empire had a residual claim on the Marshalls in 1874, when she began asserting her sovereignty over the Carolines, she made no effort to prevent the German Empire from gaining a foothold there. Britain also raised no objection to a German protectorate over the Marshalls in exchange for German recognition of Britain's rights in the Gilbert and Ellice Islands. On October 13, 1885, SMS Nautilus under Captain Rötger brought German emissaries to Jaluit. They signed a treaty with Kabua, whom the Germans had earlier recognized as "King of the Ralik Islands," on October 15.

Question: What nation had a claim on the Marshall Islands as of 1874?
Ans: the Spanish Empire


Article: Liquor was another profitable private industry nationalized by the central government in 98 BC. However, this was repealed in 81 BC and a property tax rate of two coins for every 0.2 L (0.05 gallons) was levied for those who traded it privately. By 110 BC Emperor Wu also interfered with the profitable trade in grain when he eliminated speculation by selling government-stored grain at a lower price than demanded by merchants. Apart from Emperor Ming's creation of a short-lived Office for Price Adjustment and Stabilization, which was abolished in 68 AD, central-government price control regulations were largely absent during the Eastern Han.

Question: What office did Emperor Ming create?
Ans: Office for Price Adjustment and Stabilization


Article: Heat is energy in transit that flows due to temperature difference. Unlike heat transmitted by thermal conduction or thermal convection, thermal radiation can propagate through a vacuum. Thermal radiation is characterized by a particular spectrum of many wavelengths that is associated with emission from an object, due to the vibration of its molecules at a given temperature. Thermal radiation can be emitted from objects at any wavelength, and at very high temperatures such radiations are associated with spectra far above the infrared, extending into visible, ultraviolet, and even X-ray regions (i.e., the solar corona). Thus, the popular association of infrared radiation with thermal radiation is only a coincidence based on typical (comparatively low) temperatures often found near the surface of planet Earth.

Question: The visible, ultraviolet and X-ray spectra are all above what spectrum?
Ans: infrared


Article: Compass-M1 transmits in 3 bands: E2, E5B, and E6. In each frequency band two coherent sub-signals have been detected with a phase shift of 90 degrees (in quadrature). These signal components are further referred to as "I" and "Q". The "I" components have shorter codes and are likely to be intended for the open service. The "Q" components have much longer codes, are more interference resistive, and are probably intended for the restricted service. IQ modulation has been the method in both wired and wireless digital modulation since morsetting carrier signal 100 years ago.

Question: What frequency bands does Compass-M1 transmit in?
Ans:
E2, E5B, and E6