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                      PHESTIVAL of PHYSICS   

On Sunday, March 28, 1999 at 4:00 PM the PHYSICS CLUB at 
Lock Haven University will be holding a physics demonstration show 
in Ulmer Planetarium.  The show will include demonstrations on 
electricity, magnetism and optics.  There will be colorful lights, 
sparks and arcs.  It promises to be an enlightning and electrifying
event.  It promises to be fun. The show is free and open to the public.

For more info contact John Reid (717-893-2078, jreid@eagle.lhup.edu)
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Here is the current plan for demos. 


Jim Wheeler(some w/ Andy Crawford)
1. big bubbles
2. diodes and voltage dependence
3. acoustical frequency analyzer
4. scope and microphone

John Reid
1. 3D slide show
2. bigger bubbles

Mike Bressi & Susanne Aber
1. van de Gaff
    sparks
    flourscent light
    hair
    popcorn
    tiny bubbles?
    charge baloons
    Lyden Jar 
    jumping pie plates

Kevin Campbell
1.  guitar pickup
2.  Lenzes law - jumping rings
3.  magnetic field and wax paper

Andy Crawford
1.  generator (kids turn crank)
2.  mic and light
    Kathy's idea: set this up so the number of lights
    that light up correspond to the amount of noise made.
    This will get the kids involved - they would love to
    yell!!
3.  LED and speaker

Bret Weaver
1.  laser modulation

Steve Moore
1.  Polarization

Kathy Joseph
1. strope light and water
2. light match with mirrors

Andy Cleveland
1. sunset simulation
2. simulated sunset

Ron Herr

Andy Caruso


Others
- diffraction gratings?
- laser light and stream of water

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NOTES ON DEMO SHOW

Highlights for laughs and "oooo ahhhh"s.
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Jim's bubbles
Spraying water on laser beam
Andy's voice actuated light bulb ("intelligence test6)
Placing many balloons on kid

JR's crituque
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Overall
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-Having a run-through was critical for layout and other logistics

-Having one person do intros was *big* improvement
  helped flow
  kept us and audience focussed

-We got many kids involved - good
 NEXTIME - pick kids throughout auditorium (we did too many in front)

-Have someone in back with big signs to hold up to the presenters
  - like "louder", "repeat demo"

-Presenters kept to their seats unless presenting - really important.

-Some people need to Speak louder - figure this out in rehearsal

-Explanations were, for the most part, simple and correct.  We
 went over some in rehearsal and this helped.

-We took Jim's bubbles outside afterward and kids had much fun.

-We had a line of kids for John and Andy's soap film and kids had much
  fun.

-Some demos need repeating 
  e.g., Lyden Jar  

-Some demos hard to see
 lift up or use platform/stage.  Perhaps we should get a stage?

-Need to be enthusiastic - practice beforehand

-What about adding musics?

Specific demos
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- 3D slide show 
  worked well
  too long
  needs explanation
  have audience take off glasses to see the blurry image
  explain that we have 2 eyes, etc

-laser
  have laser bounce off *many* mirrors
  explain some things about light
  use water spray to show beam
  maybe have kid or adult trace beam??

-Sunset
  raise demo up so all can see
  gradually add more milk

-Van de Graaff & electrostatic charge
 repeat Lyden jar 2 or 3 times
 we put many balloons on one kid which was funny and worked well
 Susanne spoke while here and two others added balloons
 NEXTIME: One person that is *not* putting balloons on speaks.

-Sound actuated light
 Andy brought kids up front and had them speak.  Light goes on when
 people speak.  Andy had to adjust threshold level for each kid, but
 one could interpret his adjustments as turning the light on and off.
 That is, he should not make adjustments while kid is speaking.