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SL Calibration
Ho (km/sec/mpc):
69.2`
tn_present:
1.74`
SL Distance Scales
Enter redshift z:
3
Light Travel Time (Gyr)
11.3232
Coordinate Distance X (Glyr)
20.1268
Luminosity Distance D_L (Mpc)
24666.7
Age (Gyr)
1.91901
Radius at emission (Mpc)
3002.44
Age at Present (Gyr)
13.8049
Early Universe Temp
Log10(Time [s]):
Or manually enter time (s):
15
Time (s)
15
Temperature (K)
9.4078×
9
10
Temperature (MeV)
8.107×
-1
10
Radius (meters)
8.6242×
16
10
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Usage Guide — Stationary Light Cosmology Calculator​​This calculator is intended for comparison with ΛCDM predictions or direct observations, especially in the context of type Ia supernovae and Big Bang Nucleosynthesis.​It generates cosmic distance scales: light travel time, coordinate distance, luminosity distance, proper age, and radius, as well as the proper age of the present, from the input of redshift (z), Hubble parameter (Ho) and a novel natural time scale (tn). The second module computes background temperature in the early universe from time in seconds, calibrated to the observed present-day background temperature of 2.73 K.​All outputs are derived from the Stationary Light framework, which defines redshift and cosmic evolution geometrically—without reference to the Friedmann equations, energy density, dark energy, or spacetime curvature. The natural time parameter has a linear scaled relationship to cosmic proper time, and adjusting it serves here as a proxy to Q, the change in H over time. From this, all cosmological observables follow without invoking expansion-rate equations or density balancing.​The core of the Stationary Light model is the natural redshift equation, which encodes the objective change in cosmic clock rate as a function of natural time:​ zn = ln(tn)/√(2tn - tn²)​The calibration of the present moment allows any earlier epoch to be located in natural time. The observed redshift (z) will yield the natural redshift of the emitter by:​ z = zn_observer-zn_emitter​and from there, distances, ages, and background temperatures can be calculated. There is no assumed content of the universe—only geometry.​This tool is intended to invite exploration and scrutiny. For any inquiries, please contact the author at stationarylightcosmology@gmail.com.​​
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