SCIPP Electrifies you
SCIPP
UC Santa Cruz
Santa Cruz Institute for
Particle Physics Lightning Show
sparks
YOUR School !!
SCIPP Electrifies you
SCIPP
UC Santa Cruz
IntroductIons…
UCSC Physics & Institute for Particle Physics
Prof. Terry Schalk
Prof. Hartmut Sadrozinski
Andrew
Cecille
Annika
LAURA
SCIPP
UC Santa Cruz
What’s thIs all about ?
FUN while learning!!
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(Something for everyone)
Helpers…
– Zorro
– Knight in armor
What physicists do…
– And our Outreach activities
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Facts about Lightning
Making Sparks
Survival in Lightning etc
SCIPP Electrifies you
SCIPP
UC Santa Cruz
SAFETY FIRST!
Normally you can't
see, hear or smell
electricity, but
the Tesla Coil
generates 1
million volts,
causing
• Bright sparks
• Loud crackling
noise
• The air smell
strange (Ozone)
DANGER!
1 Million Volts
SAFETY RULES
Stay at least 20 ft. away
Computers, Gameboys, CD players,
telephones to the back of the room –
unplugged, switched off!
Hearing aids off, pacemakers out of
room!
BRACE YOURSELF!
SCIPP
UC Santa Cruz
Zorro!!!
Drawing lightning
with a sword
People do survive
near lightning
Copyright Columbia Pictures
Sparks fly
to sword
Some electric
current also goes
through the air
and lights up
fluorescent bulbs
Where else does
that happen?
Electric current goes
back through wire
SCIPP
UC Santa Cruz
Teaching, Research, Outreach
SCIPP OUTREACH:
Tesla
Tesla Coil at your School: “Zap your Teacher”
Quarknet
Invite H.S. teachers into our labs for Summer research program
Invite H.S. student interns into our labs for a science experience
BalloonFest
Organize a High School Science meet on Ballooning
Outreach:
Students & Teacher in the SCIPP Lab
June 23-July 3‘08 Hands-on experience with hardware
and data analysis
Balloonfest in Paso Robles May 30th,
2008
20 high school student teams compete:
Launch balloons, gather & analyze data.
COSMOS
2008
•
•
Summer residential program at UC
Santa Cruz, Davis, Irvine and San
Diego for students who are
interested in and excel at math and
science
– Live on a college campus for 4
weeks
– Take classes taught by
professors and researchers that
go beyond typical high school
curriculum (marine biology,
nanotechnology, astrophysics,
video game design, logic, etc.)
– Take residential and academic
field trips Application period
closes Saturday March 15th at
5pm
Visit www.ucop.edu/cosmos for
more information
Lets talk about this coil again
especially => Electricity in Air
Lightning,
Jacob’s Ladder,
Corona &
Tesla Sparks
are all related.
Principle:
Air is made of molecules.
They light up when electricity goes through them!!
Very much like the candle flames light up the air molecules!
What’s Going On?
The Story of an Atom in the
Air
Lets look at
the Tesla coil in
action again !
ELECTRON FROM TESLA COIL
PHOTON
An electron shooting out of the
Tesla coil hits lots of atoms and
knocks one of their electrons to a
higher energy state. When the
electron falls back down, it emits
energy in the form of a photon,
which travels to our eyes and we
can see as light.
A Physicist’s View of the Universe and
the instruments she uses to see it:
Galaxy
Larger & Farther away
DNA
Smaller &
Harder to see
Cell
Atom
Nucleus
Electron
Logarithmic Scale: every inch = factor 10microscope
Accelerator
SCIPP Electrifies you
SCIPP
UC Santa Cruz
Nucleus of an Atom
SLAC
Visit us!
Particle Physics: Quarks, Gluons
Your Cosmic History
(an astronomer’s perspective)
Protein molecules:
Basic building blocks ofEarth
life and Sun:
Home of the C,N,O atoms from which
Galaxy:
these protein molecules were assimilated
Large family
of stars
Sun’s ancestral stars:
Their nuclear fusion reactions
produced these C,N,O atoms You are here!
What the Milky Way looks like from the ground
Teaching, Research, Outreach
AstroPhysics
Large objects in the sky
Black holes
Supernovae
SCIPP Electrifies you
SCIPP
UC Santa Cruz
The Faraday Cage
Posted on Tue, May. 17, 2005
Students uninjured after power line falls on car
By Sandra Gonzales, Mercury News
Four San Jose State University students escaped
injury Monday night after being trapped in their car
after a power line fell on it near the university.
At about 8 p.m., the four were traveling in the car
on South Sixth Street near East William Street
when a tree fell, blocking the street and knocking
down power lines, fire officials said.
The lines struck a chain-link fence, a parked Honda
Accord and a Chevrolet van, and one landed on
the moving car. As the scene unfolded, a San Jose
fire engine that happened to be nearby responded,
warning the occupants of the Toyota Corolla to
stay inside until PG&E could shut off the power to
the line. The car's occupants were safe while they
were inside the car, but could have been
electrocuted if they attempted to get out before
the power was cut.
Once the power was shut off, the students safely
left their car unharmed. The downed power lines,
however, sparked a small fire on a nearby tree that
was quickly extinguished.
Meet
the Fighting Knight
Tis’ but a
scratch…
Fighting Lightning
Bolt to the Head!!
SCIPP
UC Santa Cruz
Thomas “DC” Edison
and his Batteries
vs
DING-DING!!
Nikola “AC” Tesla
and his Generators
Nikola Tesla as a Daredevil in a double-exposure photograph
Learn more at http://nav.webring.yahoo.com/hub?ring=teslaring&list
Summary of Tesla coil operation:
1 million
volt
Voltage
starts
at 120
ends
up at
1 million!
Resonance circuit
14,000
Transformer
volt
120
volt
Outlet
T
primary
transformer
S
C
P2
secondary
transformer
UCSC EE 70
S2
The Faraday Cage
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–
–
– – – – – –
– – – –
+
–
Are you safe in an airplane or
a car during a lightning
storm?
Is it safe for the knight to be
hit by the lightning bolt?
+
+
Yes! Electric current flows
invisibly through the outside
of the metal shell (Faraday
Cage), not touching the
people inside.
+ +
+
SCIPP Electrifies you
SCIPP
UC Santa Cruz
+
How lightning works
+
+
+
+
(Atomic fragments)
The ionized air can conduct the
electrical
currentthe earth
Cover
And always have
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+
+ +
–
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– – –
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– –––
– – –– ––
–
+ – –
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–
+ –
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–
+ –
+
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+
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– + –
+
+ –
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+ –
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–
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COSMIC RAYS!!
In the turbulent clouds, charges
get separated
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–
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–
–
++
+ + +
+ + + + + +
Mystery Knight
Who is afraid of Lightning?
Not the Mystery Knight!
Even if he is NOT grounded
Is the Mystery Knight OK?
The armored suit is safe!
Let’s check!
It's a Faraday Cage – no
electric field allowed inside.
1 Million Volts
Visible
sparks
Visible
sparks
Ground
Invisible
current
Electrical
current
flows on the
OUTSIDE of
a metal!
SCIPP Electrifies you
SCIPP
UC Santa Cruz
Say “Good bye” to
Daniel Greenhouse,
the brain behind the sparks
He was an undergraduate
at UC Santa Cruz.
http://scipp.ucsc.edu
Fysiks is Phun!
Thanks to William Thompson
for inviting us!
Questions?
Ask after the show, e-mail, visit…
You can find our coordinates on the web
http://scipp.ucsc.edu
Ze END