Free Science Videos and Lectures

Neutron slams into the nucleus of a heavy element which causes a nuclear fission creating two ligher elements (fission products) and more free neutrons.

These free neutrons are absorbed by other...

This science video contains:
nucleus, nuclear fission, neutrons, fission products, chain reaction

First the DNA Wrapping is animated.
The wrapping allows 6 feet of the long DNA molecule to be densely packed into the tiny nucleus of every cell. The process starts when DNA is wrapped around...

This science video contains:
molecules, dna, dna wrapping, dna replication, protein, histone, nucleus, nuclei zone, chromatin, chromosome, cell, double helix