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BikeLab Studio — Trujillo, La Libertad, Perú

SCIENTIFIC NOIR

The physics that destroys your bicycle. And the one that saves it.
Ten episodes. One workshop in Trujillo. The same laws of the universe.

Author: Carlos Ravello · 2026 · 10 episodios

PHYSICS APPLIED TO THE BICYCLE — 10 EPISODES

Scientific Noir is a series of 10 episodes applying real physics — thermodynamics, materials mechanics, tribology, signal analysis — to the daily work of a bicycle workshop in Trujillo, La Libertad, Peru.

Each episode starts from a precise physical concept, with its formula in navigable MathML, and connects it to specific phenomena that mechanics and cyclists face: bearing wear, chain fatigue, corrosion from the coastal climate, efficiency loss in transmission.

This is not superficial science communication. It is the physics happening inside your bicycle while you ride through La Libertad, written by the person who repairs it every day.

EP.01
ENTROPY
dS/dt = Φ_S + σ

Every creaking bearing confirms the second law. Entropy never negotiates.

EP.02
STRESS
σ = F/A

Load distributed over area decides whether metal resists or yields.

EP.03
FATIGUE
σ_a = σ'_f·(2N_f)^b

Repetition accumulates invisible damage. The Wöhler curve does not lie.

EP.04
CORROSION
ΔG = ΔH − T·ΔS

ΔG < 0: iron oxidation is spontaneous. Coastal climate amplifies every reaction.

EP.05
FRICTION
F_f = μN(1−φ) + η(dv/dy)A

The Stribeck curve determines how much power your transmission loses each kilometer.

EP.06
DEGRADATION
dM/dt = −λM

Exponential degradation does not wait for you to notice it. Trujillo's environment lambda is severe.

EP.07
NOISE
SNR = P_s/(P_n + 4kTR)

Every noise is a signal waiting to be read. Diagnosis is information extraction.

EP.08
NEGENTROPY
dS/dt = d_eS/dt + d_iS/dt

Maintenance introduces negentropy. The workshop is the only source of negative Φ_S.

EP.09
COHERENCE
γ²_xy(f) = |G_xy|²/[G_xx·G_yy]

When all parts work in phase, the system recovers its original coherence.

EP.10
CYCLE
T = 1/f | D = Σ(n_i/N_f,i)

Nothing truly ends. The cycle returns. The Miner counter advances with every pedal stroke.