Summary: Is the velocity of light a fixed constant of nature, invariant over time? This page presents the available measurements of c and several statistical studies which suggest that c has decreased in the past 300 years. What other "constants" of physics might prove to be non-fixed? How would a non-constant c affect physical laws? Possible consequences for cosmology and the age of the universe. Responses and comments are solicited.
Your email comments and questions for Barry Setterfield are welcome,
- A Brief History of c
- The Atomic Constants, Light, and Time, Barry Setterfield and Trevor Norman (1987 Invited Research Report)
- Implications of Changing Constants: collected notes and questions.
- Reviewing a Plasma Universe with Zero Point energy, by Barry Setterfield (Plasma Cosmology) (linked, PDF)
- Exploring the Vacuum, (J. of Theoretics) Barry Setterfield
- Is the Universe Static or Expanding? by Barry Setterfield (8/23/02)
- Upheaval in Physics: History of the Light-Speed Debate, Helen Setterfield
- Recent Light speed Publicity, by Barry Setterfield (Nature, Paul Davies)
- A Layman's Guide to the CDK Debate, by Malcolm Bowden
- A Simplified Explanation of the Setterfield Hypothesis, by Helen Fryman with Barry Setterfield
- Reports of the Death of Speed of Light Decay are Premature, by Malcolm Bowden (April 1998, CENTJ article)
- The Vacuum, Light Speed and the Redshift, by Barry Setterfield | PDF version (6/21/01)