chaos
eworld
facts
get bent
physics

The Physics
Hypertextbook

Opus in profectus

… unit-conversion
significant-digits
orders-magnitude …

Significant Digits

discussion
summary
practice
problems

Problems

practice

Write something.
Write something.
Write something else.
Write something completely different.

conceptual

problem

discussion
summary
practice
problems

Significant Digits

… unit-conversion
significant-digits
orders-magnitude …

The Physics Hypertextbook
©1998–2025 Glenn Elert
Author, Illustrator, Webmaster

No condition is permanent.

Mechanics
1. Kinematics
2. Dynamics I: Force
3. Energy
4. Dynamics II: Momentum
5. Rotational Motion
6. Planetary Motion
7. Periodic Motion
8. Fluids
Thermal Physics
1. Heat & Temperature
2. Calorimetry
3. Heat Transfer
4. Thermodynamics
Waves & Optics
1. Wave Phenomena
2. Sound
3. Physical Optics
4. Geometric Optics
Electricity & Magnetism
1. Electrostatics
2. Electrostatic Applications
3. Electric Current
4. DC Circuits
5. Magnetostatics
6. Magnetodynamics
7. AC Circuits
8. Electromagnetic Waves
Modern Physics
1. Relativity
2. Quanta
3. Wave Mechanics
4. Nuclear Physics
5. Particle Physics
Foundations
1. Units
2. Measurement
  1. Significant Digits
  2. Order of Magnitude
3. Graphs
4. Vectors
5. Reference
Back matter
1. Preface
  1. About this book
2. Contact the author
  1. glennelert.us
  2. Behance
  3. Bluesky
  4. Google Scholar
  5. Instagram
  6. Threads
  7. YouTube
3. Affiliated websites
  1. hypertextbook.com
  2. midwoodscience.org
4. Stuff for sale
  1. Spreadshirt
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