In Unboxed — The Lightbulb in India, Sharmadip Basu and Proteep Mallik explore the history, science, and legacy of electric lighting in India, joined by guests Antara Das and Sunandan K.N.

The electric lightbulb transformed human life, replacing natural cycles of light and darkness and extending human productivity beyond the workday. Early innovations such as Humphry Davy’s arc light (1802) and Warren de la Rue’s platinum filament bulb (1840) were impractical. In 1879, Thomas Edison and Joseph Swan developed longer-lasting carbon filament bulbs. By 1906, tungsten filaments became the standard, and later, argon gas was introduced to extend bulb life.

Electric lighting arrived in India in 1879. By 1889, Kolkata had streetlights, and by 1899, its first power station. Mumbai saw electric lighting in 1882, but tungsten filament bulbs became common only by 1923. The Roy brothers helped establish India’s lighting industry with Bengal Lamps.

Don’t miss Sunandan’s personal story of electricity reaching his Kerala village in the 1970’s—with an ironic twist!

Heard the term social jet-lag? Antara, professor of biology at Azim Premji University, warns about the effects of prolonged exposure to artificial lighting, which disrupts circadian rhythms and affects sleep and health. Ironically, the future of light may eventually lie in darkness. Dark Sky Reserves, such as India’s Hanle Reserve in Ladakh, aim to reduce light pollution and preserve natural nightscapes.

Tune in to another illuminating episode of Unboxed and don’t forget to catch up on other episodes in the series.

Credits:

Akshay Ramuhalli, Bijoy Venugopal, Bruce Lee Mani, Gorveck Thokchom, Kishor Mandal, Narayan Krishnaswamy, Prashant Vasudevan, Sananda Dasgupta, Seema Seth, Shraddha Gautam, Supriya Joshi, Vaishnavi Ramanujam, and Velu Shankar