explain any 4 recent developments in science and technology that are used to mankind
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Load cycling of metal components leads to fatigue and ultimately failure through the propagation of cracks. Taking inspiration from bone...
About 85 per cent of the mass of the universe consists of dark matter. But particle physicists are still in the dark about what it is and what its properties are.
THE NATION M. KARUNANIDHI
Relentless legislator THE NATION CONTROVERSY
Virtual ban on cow slaughter WORLD AFFAIRS ENGLAND
After Manchester
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SCIENCE & TECHNOLOGY Print edition : May 12, 2017
ASTROPHYSICS
Finding brighter ‘Standard Candles’
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W.M. Keck Observatory Image of iPTF16geu Type Ia supernova.
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AN international team of astronomers has, for the first time, seen a cosmic magnification of the light from a class of supernova called Type Ia. Type Ia supernovas, often referred to as “standard candles” because of their well-known intrinsic brightness, are frequently used by astronomers as yardstick to accurately measure cosmic distances and deduce the expansion rate of our universe at different epochs. Finding a magnified, or “gravitationally lensed”, Type Ia supernova is like discovering a brighter candle with which to view the universe.
About 85 per cent of the mass of the universe consists of dark matter. But particle physicists are still in the dark about what it is and what its properties are.
THE NATION M. KARUNANIDHI
Relentless legislator THE NATION CONTROVERSY
Virtual ban on cow slaughter WORLD AFFAIRS ENGLAND
After Manchester
SECTIONS
SCIENCE & TECHNOLOGY Print edition : May 12, 2017
ASTROPHYSICS
Finding brighter ‘Standard Candles’
SHARE · COMMENT · PRINT · T+
W.M. Keck Observatory Image of iPTF16geu Type Ia supernova.
Prev 12 Next Fullpage
AN international team of astronomers has, for the first time, seen a cosmic magnification of the light from a class of supernova called Type Ia. Type Ia supernovas, often referred to as “standard candles” because of their well-known intrinsic brightness, are frequently used by astronomers as yardstick to accurately measure cosmic distances and deduce the expansion rate of our universe at different epochs. Finding a magnified, or “gravitationally lensed”, Type Ia supernova is like discovering a brighter candle with which to view the universe.
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