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The hour angle is described in figure 1.6 and it is positive during the morning, reduces to zero at solar noon and becomes increasingly negative as the afternoon progresses. Two equations can be used to calculate the hour angle when various angles are know (not that δ changes from day to day and α and A change with time throughout the the day):

Annular Solar Eclipse of January 26 The first solar eclipse of 2009 occurs at the Moon's ascending node in western Capricornus. An annular eclipse will be visible from a wide track that traverses the Chinan Ocean and western Indonesia. A partial eclipse will be seen

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14/9/2020 · Singapore-MIT Alliance for Research and Technology (SMART). "Fast and efficient method to produce red blood cells developed: New technology cuts down on cell culture time by half and uses more

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12/10/2020 · By 2050, solar power could account for 79% of the country's energy demand, supported by enhanced battery and water storage solutions to lower energy system costs. This study emphasizes the central role that energy storage will play in the transition to a sustainable energy landscape, to overcome the intermittent nature of solar and wind resources and provide power when there is no wind or

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Yahoo News Singapore Bubble tea shop owner accused of molesting two female employees claims trial An owner of a bubble tea shop claimed trial on Tuesday (13 October) to molesting two female employees he hired at a now-defunct outlet.

More than half of patients with atrial fibrillation (AF) become asymptomatic after catheter ablation, reports the largest study of the procedure. Journal References: Arbelo E, et al. Contemporary

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Our first mission is to go back. After leaving the magnificent, desolate plains of the moon a half-century ago, NASA is gearing up to put humans back on the surface by 2024.That mission, known as