Reference · Glossary

Key Concepts

Every term, symbol, and idea introduced by the theory — defined precisely and linked to the part that introduces it.


I
S, S′
Inertial Reference Frame Foundational Introduced in Part I

A reference frame in which Newton's first law holds — a body at rest remains at rest, and a body…

K
Δt′
Kinematic Dilation Intermediate Introduced in Part II

The modification of time intervals between events as measured across inertial reference frames, derived under the revised kinematic framework without…

L
γ
Lorentz Factor Intermediate Introduced in Part II

The factor by which time, length, and relativistic mass are scaled in Special Relativity as a function of velocity. Written…

S
Simultaneity Advanced Introduced in Part I

The question of whether two spatially separated events occur at the same time. In Special Relativity, simultaneity is relative —…


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