BLACK BOTTLE SOLAR HEATER | Urdu
Channel: Arvind Gupta
Date: 25/12/2016

This experiment demonstrates that black color absorbs much more heat as compared to white. Take two 1-litre plastic bottles and wrap them with same area of black and white papers. Fill both bottles with equal amounts of tap water. Measure the initial temperature of tap water. In this case the temperature of tap water is 29-degree Celsius in both the bottles. Then place both the bottles out in the sun for 3 hours. 
After 3 hours the temperature in the black bottle rose to 41.5 Celsius while in the white bottle it was 34.5 Celsius. This demonstrates that black color absorbs much more heat than white. 

This work is supported by IUCAA (www.iucaa.in) and TATA Trust (http://www.tatatrusts.org/) and (www.tata.com/aboutus/sub_index/Tata-trusts)

TATA Trust: Education is one of the key focus areas for Tata Trusts, aiming towards enabling access of quality education to the underprivileged population in India. To facilitate quality in teaching and learning of Science education through workshops, capacity building and resource creation, Tata Trusts have been supporting Muktangan Vigyan Shodhika (MVS), IUCAA's Children’s Science Centre, since inception. To know more about other initiatives of Tata Trusts, please visit www.tatatrusts.org

Credits:,Ashok Rupner,  Shivaji Mane, Jyoti Hiremath, Arvind Gupta, Vidula Mhaiskar

Dubbed in Urdu by Naziya Shaik from Pratham's Science Learning Program