Santa Cruz Institute for Particle Physics Tesla Coil Show entertains COSMOS

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Santa Cruz Institute for Particle Physics Tesla
Coil Showentertains COSMOS
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Your Guests today

• Santa Cruz Institute for Particle Physics SCIPP
• Prof. Hartmut Sadrozinski

• Prof. Terry Schalk

• Dr. Lan Zhang, UCSC Post Doc.

• Charlie Crummer, Laboratory Manager

• Christian Flacco, UCSC Grad. student

• Mr. S. Briber, Independence HS, San Jose

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• Tesla Program
• Introduction Jacob's Ladder
• Safety First
• Corona
• Zorros Sword
• Lights without Cords
• How the Tesla Coil Works
• Knight in Armor
• Bolt to the face
• Sparks from the feet
• Chicken Coop ?
• Who was Nikola Tesla?
• Mystery Knight in Armor
• Fighting Lightning

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Teaching, Research, Outreach
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The size of the object and its distance tells me
what kind of instrument I need to see it.
Larger Farther away
Smaller Harder to see
A Physicist View of the Universe
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Professors and Students (and Teachers!) conduct
research in the SCIPP Laboratories.
http//scipp.ucsc.edu
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Summer 2001 Teachers help launch a big Science
Balloon
Mr. Kliewer Prof. Schalk Dr. Dann Mr. Manildi
Mr. Briber
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Balloon Flight, Chase and Recovery
After 250 Miles across Texas at 130,000 ft, 50g
crash, still works
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SAFETY FIRST!

• Distance at least 20 ft.
• Computers, Gameboys, CD players, telephones to
  the back of the room unplugged, switched off!
• Hearing aids off, pacemakers out of room!

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Zorro
Drawing lightning with a sword
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Electricity Moves Through the Air (you knew
that, because you use a radio and TV)
What about those lights without cords?
What is happening with Zorro?
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Summary of Tesla coil operation
Voltage starts at 120 ends up at 1 million!
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Learn about Transformers
Power comes out at 14000 Volts
Where have you seen this before?
Power goes in at 120 Volts
Commercial Transformer, hooked up the backwards
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Physics Principle Transformer
We hear a lot about conserving Power (turn off
lamps, air conditioners, close refrigerator
doors...) Electrical Power is just converted
wind, water, thermal power It is brought to your
neighborhood on high voltage lines
Power goes in at 14000 Volts
Power comes out At 120 Volts
and a transformer brings it down to 120V
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Transformer 101 Energy (Power ) (at best! -
heat, sound, motion!) conserved ? IV
constant Primary (n1) and secondary (n2) share
the Magnetic Flux ? (use iron core!) ? V1
? n1d?/dt ? V2 ? n2d?/dt ? n2/n1 V1
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High voltage sparks I Jacobs ladder
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High voltage sparks II Tesla coil
T
primary transformer
S
C
P2
S2
secondary transformer
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Resonance
Thats how a swing works Match Resonance
Frequency and In-Phase
In the Tesla swing, the kick is supplied by
the Primary Coil, so it has to be tuned to the
secondary circuit to be in resonance
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T
primary transformer
S
C
P2
S2
secondary transformer
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• Transformation of Power

• Power is used everywhere
• Visit the Stanford Linear Accelerator Center
  (SLAC) Electricity -gt New particles
• Quarks

• Power is tranformed in Space
• Black holes explode
• Material -gt Light, x-rays, jets
• SCIPP works on GLAST Mission
• discover the most powerful
  power plants in the universe

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Meet the Fighting Knight
Fighting Lightning Bolt to the Head
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Electricity in Air
Lightning Jacobs Ladder Corona
Tesla Sparks are all related.
Principle Air is made of molecules. When they
are ionized, they become charged and can conduct
a current like an electrical wire. If there is a
large current, it heats up the air and makes
light. Thus, the sparks, flames etc are direct
evidence for the model of atoms!
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How lightning works
Ground is safe!
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The Faraday Cage
Planes are close to the clouds and away from safe
ground. Why arent they in grave danger from
lightning?
Answer They form a Faraday Cage -- that is,
they are surrounded by metal. Electricity flows
around the outside of the metal, and anything
inside is safe!
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The Chicken Coop
The Worlds Ugliest Faraday Cage -- and its full
of holes! But can it keep the lightning out?
Does the chicken trust the equations?
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Chicken Wire Mostly Holes
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Thomas DC Edison and his Batteries
vs.
Nikola AC Tesla and his Generators

• Tesla Revival
• 271 web sites are dedicated to Nikola Tesla
• Join the Tesla Coil Web Ring
• http//nav.webring.yahoo.com/hub?ringteslaringl
  ist

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• Nikola Tesla as a Daredevil waiting for a hair
  cut?

• Double Exposure makes it safe!

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Mystery Knight
Who is afraid of Lightning?
Not the Mystery Knight!
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• Is the Mystery Knight OK? Lets check!
• The armored suit is safe!
• It's a Faraday Cage no electric field allowed
  inside.

Invisible current
1 Million Volts
Electrical current flows on the OUTSIDE of a
metal!
Visible sparks
Visible sparks
Ground
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• Fysiks is Phun!
• Questions?

Ask after the show, e-mail, visit
You find our coordinates on the
web http//scipp.ucsc.edu
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Pls. Fill out the Feedback Form Date7/03/2002
SchoolCOSMOS 1)1) Teacher or Student (circle
one) 2) Did you know anything about these
demonstrations before you saw them? (If so how
much?) 3) What did you learn from the
demonstration? 4) What did you think worked well
for you and what didnt make any sense? 5)
What suggestions do you have that might make this
demonstration better? (that is easier to
understand) 6) Did you have fun at this
presentation? Whom will you tell about what you
saw today? 7) Did this demonstration change your
opinion about Science? 8) Any other
comments? http//scipp.ucsc.edu
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Say Good bye to Daniel Greenhouse, the brain
behind the sparks He was an undergraduate at UC
Santa Cruz.
http//scipp.ucsc.edu