Setterfield destroyed his credibility with his nonsensical c-decay hypothesis that the speed of light is not a constant and instead that
C is constantly slowing.
Which it is not.
It has been repeatedly measured by numerous people across the decades as
3×108 m/s
No decay or slowing of any kind has been measured by anyone.
It was
299,792,458 m/s in 1900 and it remains so.
If it has decayed from "millions of times faster" then that decay would be measurable even now.
Ergo, no one cares what Setterfield had to say.
Also, you can see what the speed of light is for yourself at home:
Using a microwave oven to measure the speed of light:
- Setup: Remove the microwave's turntable to keep it stationary. Place a bar of chocolate or a layer of mini-marshmallows on a plate inside.
- Process: Heat for a short time (e.g., 10–15 seconds) until specific spots begin to melt, then stop.
- Measurement: Measure the distance between the centers of the melted spots. This distance represents half the wavelength. Multiply by 2 to get the full wavelength.
- Calculation: Find the microwave's frequency on its label (typically 2,450 MHz or 2.45×109 Hz). Calculate speed using c=wavelength×frequency.
- Result: This typically yields a result close to 294,000,000 m/s (compared to the actual ~299,792,458 m/s).