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BS.
Energy is not conserved in GR.
Standard "nuh uh..." tripe.
The decay of c. has over 300 years of proven tests and is irrefutable beyond the margin of error.
This is utter nonsense, are you seriously suggesting a speed of light measurement performed 300-350 years ago using telescopic observations and a timing piece based on a primitive pendulum clock can even be compared to the use of lasers and atomic clocks in modern times?
| Year | Scientist(s) | Method / Equipment | Timing Device Used | Measured Speed of Light (km/s) | Reported Error / Uncertainty | Notes |
|---|---|---|---|---|---|---|
| 1676 | Ole Rømer | Astronomical observation of eclipses of Jupiter’s moon Io | Mechanical astronomical clocks (early pendulum clocks) | ~214,000–220,000 | Very large (~−27% error vs modern value) | First evidence light travels at finite speed. |
| 1726 | James Bradley | Stellar aberration measurements using telescope | Precision pendulum clocks and astronomical timing | ~301,000 | ~0.4% error | Used Earth’s orbital motion instead of time-of-flight experiment. |
| 1849 | Armand Fizeau | Toothed-wheel apparatus with distant mirror (~8 km) | Mechanical chronometer / rotating wheel frequency as timer | ~315,000 | ~+5% error | First terrestrial measurement of light speed. |
| 1862 | Léon Foucault | Rotating mirror optical apparatus | Mechanical rotation rate timing (calibrated chronometers) | 298,000 | ±500 km/s | Demonstrated light slower in water than air. |
| 1879 | Albert A. Michelson | Improved rotating mirror system | Precision mechanical chronometers measuring rotation speed | 299,910 | ±50 km/s | Beginning of modern precision optical experiments. |
| 1907 | Rosa & Dorsey | Electrical measurement from electromagnetic constants | Electrical oscillation timing with precision galvanometers and chronometers | 299,788 | ±30 km/s | Indirect determination from EM constants. |
| 1926 | Albert A. Michelson | Long baseline rotating mirror experiment (Mount Wilson) | Highly accurate electromechanical timing systems | 299,796 | ±4 km/s | One of the most precise pre-WWII optical measurements. |
| 1947 | Louis Essen & A. C. Gordon-Smith | Microwave cavity resonator experiment | Quartz crystal oscillators (early electronic precision clocks) | 299,792 | ±3 km/s | Radar technology improved timing accuracy greatly. |
| 1958 | K. D. Froome | Microwave interferometer / radio frequency measurement | Stabilized quartz frequency standards | 299,792.5 | ±0.1 km/s | Transition toward frequency-based measurements. |
| 1972 | Evenson et al. | Laser interferometry measuring wavelength and frequency | Atomic clocks (cesium standard) | 299,792.4574 | ±0.001 km/s | Extremely precise laser frequency measurement. |
| 1983 | International Committee on Weights and Measures | Definition via SI metre (distance defined from light travel time) | Atomic clocks defining the second | 299,792.458 (exact) | No error (definition) | Speed of light fixed constant in SI system. |
So when I explained to you the energy conservation law does not apply globally to an expanding universe because the metric tensor components of the FLWR metric are time dependent and time invariance is broken according to Noether’s theorem, I might as well as communicated in some alien code given your complete lack of comprehension.
Since you are very much into the 'LAWS of Physics', there is one particular law called the conservation of angular momentum which is applicable to spiral galaxies.
Nope. They are correct. Just wait around for another 4 billion years or so.
www.britannica.com
