Floating Lemon | English
Channel: Arvind Gupta
Date: 2015-04-22

Well, this is a very simple experiment which can be performed with very little equipment. A lemon sinks in plain tap water, and floats in salty water. Even if you push the lemon down in salty water it bobs up. To do this experiment you will need two transparent glasses, two similar lemons, salt, and spoon and of course tap water. Fill the first glass with plain tap water. Then drop a lemon in it. The lemon will sink. This is because the density of the lemon is greater than the density of tap water. Now add some salt to the water and stir. The salt solution or brine will have a greater density than the lemon. So, the lemon will float in salty water.
It is easier to float in the salty sea than in a fresh water pond.
If you drop a lemon in plain water it will sink. But on dropping the lemon in salty water it will float. This work was supported by IUCAA and Tata Trust. This film was made by Ashok Rupner 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