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Tue 21st of November 2017

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IAS EXPRESS - Free Download

Stereolithography
  • Scientists have developed a novel way to 3D-print objects using glass, an advance that could be used to make very small optical components for complex computers. The process is known as Stereolithography.

  • Stereolithography is a form of 3D-printing technology used for creating models, prototypes, patterns and production parts in a layer by layer fashion using photopolymerisation, a process by which light causes chains of molecules to link, forming polymers. The material, which remains a liquid, is washed out in a solvent bath, leaving only the desired cured structure. The polymer still mixed in this glass structure is subsequently removed by heating. 

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Prelims Question of the Day

With reference to 'Natural Rate of Unemployment', consider the following statements.

1. It is the level of unemployment in an economy that is just consistent with a stable rate of Inflation.

2. It is the unemployment that prevails when all markets in the economy are in equilibrium.

 

(a)1 and 2

(b)2 only

(c)1 only

(d)None of the above

Mains Question of the Day

1.GS-No party in power can afford to ignore Directive Principles of State Policy. Comment.(200 Words)

2.Political Science - Explain the role of non state actors, like IMF, World Bank, European Union and MNCs, in modulating and transforming the broad dynamics of international relations. (250 Words).

3.SOCIOLOGY - What is the impact of Globalization on the structure and mobilization of the working class in India? (250 Words).

Sociology - Thinkers