https://neuroquiet-us.sites.kaltura.com/
Food & Drink3 mins ago
No best answer has yet been selected by palaniyapan. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.That rather depends on which particular science subjects you're interested in and what level you're at.
For example this is a particularly good one for introducing advanced physics such as quantum mechanics and relativity. Aimed at teenaged students I guess.
http://www.colorado.edu/physics/2000/index.pl
Is this the sort of thing you're looking for?