PIRA Classification Scheme

PIRA stands for the Physics Instructional Resource Association, partially supported by the American Association of Physics Teachers. Support the AAPT!

Mechanics

1A-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

Fluid Mechanics

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

Sound, Oscillations, and Waves

3A-Oscillations 3B-Wave Motion 3C-Acoustics 3D-Instruments 3E-Sound Reproduction

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

Electricity and Magnetism

5A-Electrostatics 5B-Electric Fields and Potential 5C-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

Optics

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

Modern Physics

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

Astronomy

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

Equipment

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