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"Why don't the

protons in a nucleus

fly apart?"

Don't likes repel?"

 

http://www.cassiopeiaproject.com/

School Blocks YouTube? Use the file below.

| Fission_and_Fusion.mov |

 

 

 

 

 

 

 

"How can you possibly
learn about the parts of a nucleus when it's so small that you can't
even see it with
a microscope?"

 

Forces Inside Nucleus

 

1) Strong Nuclear Force

(A.K.A. 'strong force')

 

• Holds Nucleus Together - very strong, short range

 

• operates at distance < 10-13 m

 

 

Two H nuclei fuse into a single helium atom.
What is this nuclear reaction called?

http://www.wpclipart.com/

 

 

 

 

Fusion - Uniting of small nuclei
 to form a larger nuclei

 

 

 


Our sun is large fusion 'bomb'.

http://www.wpclipart.com/

 

 

A is for Atom

School Blocks YouTube? Use the file below.

BingEnergyFission.mp4

This movie is part of the collection: Prelinger Archives

Producer: Sutherland (John) Productions Sponsor: General Electric Company

Keywords: Atomic-nuclear: EnergyPhysicsAnimation

Creative Commons license: Public Domain

 

 

 

 

A) Binding Energy - amount of energy needed to separate nucleons (protons and neutrons) in nucleus.

 

 

Protons and neutrons in nucleus in large nuclei have slightly less mass than n and p in small nuclei

 

 

Mass of Assembled
Nucleus

<

Combined Mass of an
 Equivalent # of Nucleons.

 

 


Lost Mass
called Mass Defect

 

 

Mass Defect
 =
Binding Energy

(mass lost is
converted to energy)

 

 

Ex) If the mass defect is .1 universal mass units then the binding energy = ....

 

(p. 1 Reference)

 

1 Universal Mass Unit

converts to

 

9.31 x 102 Mev

(p. 1 ref)

 

 

9.31 x 101 Mev

 

 

 

 

Subatomic
Particles

 

 

 

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