• The three Tagores - Rabindranath and his two nephews, Gaganendranath and Abanindranath - highlighted in the exhibition, The Tagore Triad (on show at Akar Prakar till November 25) were deeply interested in arts other than painting as well, particularly music. Rabindranath and Abanindranath both practised music and this had an impact on their art. The latter had created a series of paintings based on his musical sensibility using calligraphy, Mughal style. Prints of five pages from that rare work are on display here. The exhibition - it has been curated by Debdutta Gupta - endeavours to explore the pioneering vision and contribution of these three artists to Indian art.

• On November 18, 1787, Louis-Jacques-Mandé Daguerre was born. The French physicist created the daguerreotype, the first commercially successful form of photography. A daguerreotype was created by exposing silver-coated copper plates to iodine, obtaining silver iodide. This was then exposed to light for a few minutes and coated with mercury vapour and fixed with salt water. The plates were exact reproductions of the scenes, but the images were laterally reversed, as in a mirror, and could only be viewed at an angle.