Page 228 - A Life - my Live - my path

Appendix

Fusion
Again, due to the extremely high pressures and
temperatures, the atoms fuse to form larger atoms.
(hydrogen -- >helium -- > lithium………… uranium).
These are the types of reactions that still take place in the
sun and some stars today.
As light elements disappear over time, stars evolve and -
eventually - disappear too.

Fission
Fission is the opposite phenomenon.
The heaviest elements, such as uranium-235, are broken up
by bombardment with certain elementary particles, such as
neutrons.

As can be seen in this illustration, fission of uranium-235
will yield:

• 2 fission products.
• 3 neutrons.
• Gamma rays (Ɣ).

216