Murray Gell-Mann was born in 1929 and is still living. He graduated valedictorian from Columbia Grammar School and attended Yale University at age 15. Gell-Mann won the 1969 Nobel Prize in Physics. In 1964, he discovered the quark, which makes up protons and neutrons in the nucleus. Quarks have never been isolated due to their small size of 10-15 mm. Gell-Mann is also interested in activities like bird watching and collecting antiques.

1. History of the Atom:
Murray Gell-mann
By: Gabby Pothier and Morgan Fabrizio

2. Murray Gell-mann: Birth, Early Life
education and Notable awards.
-Murray Gell-mann was born on September 15th,
1929, and is still alive to this present day.
-He graduated valedictorian from the Columbia
Grammar and Preparatory School, and then entered
Yale at the age of 15 at Jonathan Edwards College.
-Murray Gell-mann won the Nobel Prize in Physics in
1969. He also won many other notorious awards, for
an example the Ernest O. Lawrence Award in 1966,
the Albert Einstein medal in 2005, and many other
awards.

3. Some major scientific findings...
-Murray Gell-mann knew little about the atom, but
discovered the quark in 1964.
-The “quark” makes up protons and neutrons in the
nucleus.
-The quark can also never be isolated
-There are up and down quarks
-They are 10-15 mm in size
-Nobody has ever seen a quark

4. Interesting facts?
-Gell-mann is also interested in bird-watching, collecting
antiques, ranching, and many different activities.
-Gell-mann also endorsed Barack Obama for the United
States presidency in October of 2008.
-The word “quark” is a nonsense used word from the novel
“Finnegans Wake,” which contains the passage with the
word, “Three Quarks for Muster Mark!”

5. What influenced his findings at the
time...
-Discovery of the atom influenced Murray Gell-
mann into discovering the “quark.”

6. Before Gell-mann’s discovery of the
quark...

7. After adding the discovery of the
quark...

8. Comparing the before and after
models...
-Both models have protons, neutrons and
electrons, as well as the nucleus with the
addition of the “quark.”
-Both the atom and the proton in both models
are splitting of from the nucleus
-Both of the nucleus’ in both models are made
up of protons and neutrons.

9. Contrasting the before and after
models...
-The Protons and Neutrons split from the
nucleus from the before model to the after
model
-The quark is added to the protons
-The electrons are on the other side of the
nucleus, away from the protons and “quarks.”

10. A video clip of the “quark…”
http://www.teachersdomain.org/asset/phy03_vi
d_quark/
2:01, 2:41

11. Sources used for this presentation...
http://en.wikipedia.org/wiki/Murray_Gell-Mann
https://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAc
QjRw&url=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FMurray_Gell-
Mann&ei=XHoBVdOwIei0sAT6wYAg&bvm=bv.87920726,d.cWc&psig=AFQjCNEel8XVNM4-
tqEspO355IQIxBUm5w&ust=1426246556643367
https://the-history-of-the-atom.wikispaces.com/Murray+Gell-Mann
http://www.teachersdomain.org/asset/phy03_vid_quark/
http://www.particleadventure.org/quarknaming.html