What is Nuclear Fission? | Physics

This is supposed too be about nuclear fission but you refer to splitting atoms, not nuclei. And you show a nucleus labelled 'Uranium atom'. These atoms are not 'very unstable' - their half-lives are billions of years - otherwise they wouldn't be here. The 'neutron beam' is also misleading - why is it shown as narrower than a neutron? Why is it green? There aren't neutron beams in a reactor. Why are separate neutrons shown as green while those in the nucleus are yellow? In the balance picture, there are many fewer particles after split. The energy released when a nucleus fissions is not 'heat energy'; it is KE and gamma radiation. You can't talk about heat on the atomic or nuclear scale. It is utterly misleading to show nuclei as 'hot' (1:20). A 'hot' nucleus has lots of KE. In your graphic of the reactor, you have not shown how heat is extracted from the core - where is the coolant?

Another great video on Nuclear Fission! I added this resource to the @tesScience Twitter stream. Thanks for sharing.