The c-Wall: Visualisation · Signals from the Periphery

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Speed

0.900 c

Lorentz γ

2.294

KE (× mc²)

×1.29

Ship clock

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Next 0.001 c

×21,902

The c-Wall · Lorentz
KE = (γ−1)mc² · γ = 1/√(1−β²)
at c the bill is infinite, for any mass
Parker probe 0.0006 c · our fastest craft
LHC proton γ ≈ 7,250 · still not c
confirmed daily in every accelerator

Component

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The bill, live

KE = (γ−1)mc²

γ = 2.294 · KE = 1.29 mc²

10⁻³ mc²110³10⁶

View

Speed presets

Established · Special relativity

Pour in energy

Kinetic energy1.29 mc²

log scale, 10⁻³ to 10⁶ rest-masses of energy: the speed it buys approaches c and never touches it

For a mass of

Display

Equal-energy steps (Curve)

Log energy axis (Curve)

Hold a steady 1 g

Streaming stars (Chase)

Readout · live

Speed β

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Lorentz γ

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Kinetic energy

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In joules

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Rapidity φ

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Next 0.001 c

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Ship clock (1 g)

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World energy / yr

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Why speeds refuse to add

Fire a 0.9 c probe from a 0.9 c ship and a bystander measures not 1.8 c but 0.994 c: velocities combine as (u + v)/(1 + uv/c²), which can never cross c. What does add cleanly is rapidity, φ = artanh β. You can always add more φ, but β = tanh φ stays below 1 for any finite value. The same wall, seen from a second angle.

What is exact vs stylised

Exact: KE = (γ−1)mc², γ, rapidity, the 1 g relativistic-rocket run β = tanh(aτ/c), the Parker / LHC anchors, and every printed number. Stylised: the wall's on-screen distance (a power of 1−β so it visibly crowds and never arrives), the sped-up ship clock, the linear axis cap at 8 mc², and the warp bubble sweep, which is the one Theoretical element.

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at 0.9 c the kinetic energy passes a whole rest-mass