UPSC Prelims 2017·GS1·science-and-technology·science and technology

The terms 'Event Horizon', 'Singularity', 'String Theory' and 'Standard Model' are sometimes seen in the news in the context of

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  1. AObservation and understanding of the UniverseCorrect
  2. BStudy of the solar and the lunar eclipses
  3. CPlacing satellites in the orbit of the Earth
  4. DOrigin and evolution of living organisms on the Earth

Explanation

These terms are all fundamental concepts in physics and cosmology, used to describe and understand the universe: Event Horizon: The boundary around a black hole beyond which nothing, not even light, can escape. Singularity: A point in space-time where the density and gravitational field of a celestial body are predicted to become infinite, as in a black hole's center. String Theory: A theoretical framework in physics that posits that the fundamental constituents of the universe are not point-like particles but one-dimensional "strings." It attempts to unify all fundamental forces of nature. Standard Model: The theory describing three of the four known fundamental forces in the universe (electromagnetic, weak, and strong interactions, but not gravity) and classifying all known elementary particles. All these terms are directly related to the study of the cosmos, its fundamental laws, and its structure, aligning with "Observation and understanding of the Universe."
science-and-technology: The terms 'Event Horizon', 'Singularity', 'String Theory' and 'Standard Model' are sometimes seen in the news in the con
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