Thermodynamics of spacetime from minimal area

Motivated by exploring the interface between thermodynamics of spacetime and quantum gravity effects, we develop a heuristic derivation Hawking temperature Bekenstein entropy from existence minimal resolvable area. Moreover, find leading order corrections to them that are in qualitative agreement with results obtained other methods, both rigorous. In this way, recover, as particular case, heuristically length. We also show size area is constrained above well-understood semiclassical black hole physics, specifically content radiation. The introduce applied finding Unruh associated causal diamonds establish new relation diamond's horizon.