Dr Kishore's video on 'straw hydrometer' now available at pinterest.com

The short science video "A quick to make straw hydrometer" by Dr Lalit Kishore / lkishorejaijawan on youtube has been put on pinterest.com [1]

The video shows how to make a hydrometer quickly from a short piece of a straw by loading it with a gem clip

[1]https://in.pinterest.com/pin/471259548486591039/