Science & Technology Mixed Quiz: Set 25

He was born on 22 December 1887 at Erode, worked largely without formal training, and left results on infinite series, continued fractions, partitions and the mock theta functions that mathematicians are still developing; he worked with G. H. Hardy at Cambridge and was elected a Fellow of the Royal Society.

C. V. Raman announced on 28 February 1928 that when a beam of light passes through a transparent medium a small fraction of it is scattered with a shifted wavelength, which carries information about the molecules of the medium; the Government of India fixed National Science Day on that anniversary…

The Bureau is India’s National Standards Body and it grants the ISI mark to manufactured goods that conform to the relevant Indian Standard.

Fourteen of them stand close together in a central square of about one kilometre, and the remaining sixteen are spread along three arms in a Y shape stretching some twenty-five kilometres, which gives the array both the sensitivity of a filled aperture and the resolution of a wide one.

Their instruments, such as the giant sundial called the Samrat Yantra and the hemispherical Jai Prakash Yantra, measured time, declination and the positions of the planets with shadow and sightline alone, and the Jaipur site was inscribed on the UNESCO World Heritage List in 2010.

The Kalvari class are conventional diesel-electric attack submarines built at Mazagon Dock Shipbuilders in Mumbai to the Scorpene design under a transfer of technology, and the class includes INS Kalvari, Khanderi, Karanj, Vela, Vagir and Vagsheer.

The name comes from the method: material is added layer upon layer under the control of a digital model until the object is complete, so that nothing has to be cut away.

In 2015 the Supreme Court held section 66A, which punished the sending of offensive messages through a communication service, to be unconstitutional because it was vague and overbroad and violated the freedom of speech under Article 19(1)(a).

Meghnad Saha showed in 1920 how the degree to which a gas is ionised depends on its temperature and pressure, and the equation let astronomers read the temperature of a star directly from the lines in its spectrum and so classify stars in a physically meaningful way; it is counted…

Digital Sky is the online platform of the Directorate General of Civil Aviation on which a drone is registered and given its unique identification number, on which the airspace map with its green, yellow and red zones is published, and through which flight permissions are sought.

The Bureau works under the Department of Consumer Affairs in that Ministry, and the Union Minister in charge is the President of the Bureau, because standards and certification exist to protect the consumer.

The Department of Science and Technology was created in 1971 as the nodal department for the promotion of new areas of science and technology and for the coordination of scientific work across ministries; it now runs the INSPIRE programme, the fellowships and the Vigyan Dhara scheme.

A gravitational wave detector is an L-shaped interferometer whose two arms, each four kilometres long, are watched for the minute change in length produced when a wave from colliding black holes or neutron stars passes through the Earth.

The Nano Mission, formally the Nano Science and Technology Mission, was launched in 2007 under the Department of Science and Technology, which had already been running the Nano Science and Technology Initiative since 2001, and the mission works on basic research, human resources, infrastructure and the transfer of results to…

He invented stereolithography in the mid-1980s, in which a laser hardens liquid photopolymer resin point by point, and in doing so built the first working 3D printer; he also went on to found a company to sell the machines.

The European Space Agency was founded in 1975 by a group of European countries that decided to pool their space work, and its headquarters is in Paris.

He led the introduction of the high-yielding dwarf wheat varieties into Indian fields in the nineteen sixties, worked with the government on the package of seed, fertiliser and irrigation that turned the country from food imports to self-sufficiency, and received the first World Food Prize in 1987.

Agmark is a grade mark given under the Agricultural Produce (Grading and Marking) Act, 1937 to produce such as edible oils, ghee, butter, honey, spices, pulses, wheat flour, besan and eggs, and it is administered by the Directorate of Marketing and Inspection under the Ministry of Agriculture and Farmers’ Welfare.

An STL file describes the outer surface of a three-dimensional object as a mesh of triangles and carries no colour, material or texture information.

He persuaded the Tata trusts to fund the Tata Institute of Fundamental Research at Bombay in 1945, became the first chairman of the Atomic Energy Commission set up in 1948, and founded the Atomic Energy Establishment at Trombay, which was renamed the Bhabha Atomic Research Centre after he died in…