Time Travel (সময় যাত্রা) -02

Video Credit & Collection: Science Bangla Channel .
This video I have uploaded only for personal research, family view, hobby and for our (Family) Internal education purpose only. We the family members are staying different countries. This uploading is helping me to educate my first relatives (Siblings). This upload does not involve any commercial or marketing activity or whatsoever.
Regards, Asfuq Azam
E-mail: [e-mail]