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Secondary sourcePaintingbetween 1877 and 1878

Branca Steam Engine Illustration

Unknown · between 1877 and 1878

A nineteenth-century engraving of Giovanni Branca's steam engine, a later design inspired by ideas traced back to Hero of Alexandria.

This illustration shows a later steam device often discussed in relation to Hero's earlier invention.

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Engraving of a Branca steam engine: a small carved wooden or stone-like figure of a man with a cigarette-like pipe in his mouth, seated on logs, with a steam-driven rotary wheel and cylinder mechanism on a stand beside him. Steam wisps rise from the scene. Two pots sit beneath the machine.
Branca steam engine illustration, Popular Science Monthly, c. 1877-78.

About this source

What it is

This engraving, published in Popular Science Monthly around 1877-78, shows a steam engine designed by Giovanni Branca. It depicts a carved figure with steam jetting from its mouth, driving a wheel and cylinder mechanism nearby.

Why it matters

Branca's device came long after Hero's lifetime, but it is often discussed alongside Hero's engine as part of the long history of steam-powered inventions. Comparing the two shows how ideas about using steam for power developed and changed across many centuries.

Look closer

  • What similarities and differences do you notice between this machine and Hero's engine?
  • Why might later illustrators connect Branca's design back to Hero's ancient ideas?
  • What does this comparison tell you about how technology builds on earlier ideas?

This painting is part of the curated material that grounds the AI version of Hero of Alexandria on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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