# PIRA Classification Scheme

"PIRA" stands for the Physics Instructional Resource Association, partially supported by the American Association of Physics Teachers. Join the [http://www.aapt.org AAPT!]

The goal of the PIRA Demonstration Classification Scheme was created to provide a logical organization and universally inclusive unique number to every lecture demonstration nation wide. The structure of the classification system is as follows:

•  Example: 1D60.10.a Howitzer and Tunnel (another name, Ballistic Cart and Bridge) attachment:piralogo.jpg 1 Area (mechanics) attachment:bucky_left_2c.gif D Topic (motion in two dimensions) 60 Concept (projectile motion) .10 Demonstration (Howitzer and Tunnel) For more info Click [http://physicslearning.colorado.edu/PiraHome/dcs/PIRADCS.html DCS] .a Duplication UW-Madison addition for multiple units, (a, b, c, ...)

(links will become active as demonstrations are catalogued)

### 1. Mechanics

 1A-[:Measurement:Measurement] 1C-Motion in One Dimension 1D. Motion in Two Dimensions 1E-Relative Motion 1F-Newton's First Law 1G-Newton's Second Law 1H-Newton's Third Law 1J-Statistics of Rigid Bodies 1K-Applications of Newton's Laws 1L-Gravity 1M-Work and Energy 1N-Linear Momentum 1Q-Rotational Dynamics 1R-Properties of Matter

### 2. Fluid Mechanics

 2A-Surface Tension 2B-Statics of Fluids 2C-Dynamics of Fluids

### 3. Waves & Sound

 3A-[:Oscillations:Oscillations] 3B-[:WaveMotion:Wave Motion] 3C-[:Acoustics:Acoustics] 3D-[:Instruments:Instruments] 3E-[:SoundReproduction:Sound Reproduction]

### 4.Thermodynamics

 4A-Thermal Properties of Matter 4B-Heat and the First Law 4C-Change of State 4D-Kinetic Theory 4E-Gas Law 4F-Entropy and the Second Law

### 5. Electricity and Magnetism

 5A-[:Electrostatics:Electrostatics] 5B-[:ElectricFieldsAndPotential:Electric Fields and Potential] 5C-[:Capacitance:Capacitance] 5D-Resistance 5E-Electromotive Force and Current 5F-DC Circuits 5G-Magnetic Materials 5H-Magnetic Fields and Forces 5J-Inductance 5K-Electromagnetic Induction 5L-AC Circuits 5M-Semiconductors and Tubes 5N-Electromagnetic Radiation

### 6. Optics

 6A-Geometrical Optics 6B-Photometry 6C-Diffraction 6D-Interference 6E-Interference 6F-Color 6H-Polarization 6J-The Eye 6Q-Modern Optics

### 7. Modern Physics

 7A-Quantum Effects 7B-Atomic Physics 7D-Nuclear Physics 7E-Elementary Particles 7F-Relativity

### 8. Astronomy

 8A-Planetary Astronomy 8B-Stellar Astronomy 8C-Cosmology

### 9. Equipment

 9A-Support Systems 9B-Electronic 9C-Mechanical

[:Demonstrations:Demonstrations]

[:Instructional:Home]