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Both calculators run independently — change the inputs on either side to compare results.
Relativity
Relativistic Doppler Shift Calculator
Computes the observed frequency of light or radio waves when the source and observer move relative to each other at relativistic speeds. Essential for astronomy, radar physics, and understanding redshift in cosmology.
Fill in the required fields to see your result.
Relativity
Relativistic Escape Velocity Calculator
Calculates the escape velocity from a massive body using a relativistic correction for the Schwarzschild geometry. Useful for neutron stars, white dwarfs, and objects near black hole thresholds.
Fill in the required fields to see your result.
Key differences
| Relativistic Doppler Shift Calculator | Relativistic Escape Velocity Calculator | |
|---|---|---|
| Category | Relativity | Relativity |
| Inputs required | 3 | 2 |
| Result | Observed Frequency (Hz) | Escape Velocity (fraction of c) |
| What it does | Computes the observed frequency of light or radio waves when the source and observer move relative to each other at relativistic speeds. Essential for astronomy, radar physics, and understanding redshift in cosmology. | Calculates the escape velocity from a massive body using a relativistic correction for the Schwarzschild geometry. Useful for neutron stars, white dwarfs, and objects near black hole thresholds. |