Rainbows have amazed us since the dawn of humanity—either as a divine depiction, a scientific puzzle or an epitome of beauty. These celestial arcs appear when sunlight hits airborne water droplets at some angles. For a rainbow to occur, sunlight refracts into the droplet, reflects within, and refracts out.
Professor Khare discusses the vulnerability of research, the charm of number theory, and why mathematics is central to human culture.
Bengaluru/