Search and compare thousands of words and phrases in British Sign Language (BSL). The largest collection online.
How to sign: the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes
Your browser does not support HTML5 video.
Similiar / Same: conservation of energy, first law of thermodynamics
Categories: conservation, law of thermodynamics
Upload your sign now.
Add this video to your website by copying the code below.