Water, air and fire at work in Hero's machines

TL;DR

This paper explores Hero of Alexandria's early steam, water, and fire-powered devices, highlighting their significance in the history of fluid dynamics and engineering innovation.

Contribution

It provides a detailed analysis of Hero's machines from 'Pneumatica', emphasizing their role in advancing ancient fluid dynamics knowledge.

Findings

Hero's devices demonstrate sophisticated understanding of fluid mechanics.

The machines exemplify early applications of steam and pneumatic principles.

These devices influenced subsequent developments in engineering and science.

Abstract

Known as the Michanikos, Hero of Alexandria is considered the inventor of the world's first steam engine and of many other sophisticated devices. Here we discuss three of them as described in his book "Pneumatica". These machines, working with water, air and fire, are clear examples of the deep knowledge of fluid dynamics reached by the Hellenistic scientists.