pp 137-138 February 2018 Editorial
pp 139-139 February 2018 Science Smiles
pp 143-146 February 2018 Article-in-a-Box
pp 147-163 February 2018 General Article
Jets in active galaxies are signatures of energy supply via collimatedbeams of plasma from the galactic nucleus to the extendedregions of emission. These jets, which occur acrossthe electromagnetic spectrum, are powered by supermassiveblack holes in the centres of the host galaxies. Jets are seenon the scale of parsecs in the nuclear regions to those whichpower the giant radio sources extending over several megaparsecs.These jets raise many challenging astrophysical questions.This article explores some aspects of jets in radio galaxiesand quasars, which are amongst the most powerful activegalaxies.
pp 165-182 February 2018 General Article
The cosmos is strange and beautiful, full of unanticipated objects.The only way to understand it is to observe it – in asmany different ways as possible. In this article, we take alook at the wonders revealed upon observing radio emissionsfrom celestial objects through the Giant Metre-wave RadioTelescope (GMRT), near Pune, India.
pp 183-195 February 2018 General Article
In this article, I discuss the relationship of mathematics to thephysical world, and to other spheres of human knowledge. Inparticular, I argue that mathematics is created by human beings,and the number π cannot be said to have existed 100,000years ago, using the conventional meaning of the word ‘exist’.
pp 197-217 February 2018 General Article
The immune system protects our bodies against infectionsand cancers. This review introduce readers to the thymus
– a primary lymphoid organ – which is the site of developmentand maturation of functional T lymphocytes. Progenitorstem cells arise from the bone marrow and undergo sequentialdevelopment in the thymus where non-self-reactiveT cells are selected. Subsequently, post selection and maturation,the mature T cells exit the thymus as na¨ıve T cells intothe peripheral lymph nodes. Studies on the thymus are likelyto enhance our understanding of T cell development and reducedisease burdens by improving the cellular immune response.
pp 219-224 February 2018 General Article
In molecular self-assembly,molecules put themselves togetherin a predefined way by decoding the information alreadycoded/stored in themolecules. Suitably selected chemical componentsare simply combined in a single-pot under properenvironment. As a consequence, the participating componentsarrange themselves in a three-dimensional array. Thiswork describes the philosophical approaches on the makingof self-assembled coordination cages utilizing building blockslike palladium(II) and organic ligands. An exotic molecule offive-fold symmetry is considered as a particular example todescribe the phenomenon.
pp 225-233 February 2018 Classroom
In this series of articles, the authors discuss various phenomenain fluid dynamics, which may be investigated via tabletopexperiments using low-cost or home-made instruments. Theeleventh article in this series demonstrates the Marangoni effect.
pp 235-239 February 2018 Classics
pp 241-241 February 2018 Information and Announcements
pp 242-242 February 2018 Information and Announcements
pp 243-243 February 2018 Information and Announcements
pp 244-244 February 2018 Information and Announcements
pp 245-245 February 2018 Flowering Trees
Volume 25 | Issue 1