Skip to main content

Secondary sourcePainting12 August 2016

Aeolipile Engine Animation

MichaelFrey · 12 August 2016

A modern animated diagram showing how the aeolipile, a steam device attributed to Hero of Alexandria, works.

This animation illustrates the aeolipile, a steam-powered device attributed to Hero of Alexandria.

Ask Hero of Alexandria about this sourceView the original(opens in new tab)
Animated cartoon diagram of an aeolipile steam engine: an orange sphere on a central pipe rests above a fire-heated boiler on a stand, with two bent nozzle arms and white swirling steam trails around the sphere.
Animated diagram of Hero's aeolipile, by MichaelFrey, 2016.

About this source

What it is

This is an animated cartoon diagram created in 2016 by a Wikimedia Commons contributor named MichaelFrey. It depicts the aeolipile, a device credited to Hero of Alexandria, showing steam causing a sphere to spin.

Why it matters

Hero's aeolipile is often cited as one of the earliest known examples of a steam-powered device. This modern animation is a teaching tool that helps visualize the physical process described in ancient accounts, showing how heat and steam were understood to create motion long before the industrial age.

Look closer

  • What does the animation show happening to make the sphere spin?
  • Why might an animation be a useful way to explain an ancient device like this?
  • What questions does this raise about how closely modern illustrations match the ancient original?

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.

More Hero of Alexandria sources

Meet the AI Hero of Alexandria →
Manuscript page with Greek text in brown ink at top and bottom, and colored line drawings in the middle showing Hero's hydraulic bird-singing apparatus: several birds perched on pipes and arches, a tall cylindrical water vessel, a horizontal tank, and a bell-shaped weight on a chain.Book

Secondary source

Pneumatica

Hero of Alexandria · 1st century AD (this copy later)

Page from a Greek manuscript showing a colored line drawing of a temple-like structure with columns, arches, and a dome-like roof, with hidden tanks and mechanisms below. Greek handwritten text fills the lower part of the page.Book

Secondary source

Automata (Bacchus diagram)

Hero of Alexandria · 1st century AD (this copy later)

Painted miniature from a Greek manuscript: a bearded man with long grey hair in a golden-brown cloak extends his right hand toward the left, beside a dark archway. Red Greek lettering reads 'ΗΡΩΝ ΦΙΛΟΣΟΦΟ' beside him.Painting

Secondary source

Hero of Alexandria in the Codex of Saint Gregory Nazianzenos

Unknown author · 9th century AD

Illuminated manuscript page with colored design drawing of a large siege engine or cannon in red, blue, green and tan, with a vertical arrow-like beam at top, surrounded by Greek text in brown ink on parchment.Document

Secondary source

Belopoiika (design drawing of a siege engine)

Hero of Alexandria · 1st century AD (this copy later)

Title page of a 1589 Italian book, engraved in black and white with an ornate architectural border of columns, scrolls and a central medallion. Printed text reads Di Herone Alessandrino De gli automati, ouero Machine se moventi, libri due, tradotti dal greco da Bernardino Baldi, with a small shield reading In Venetia, appresso Girolamo Porro, 1589.Book

Secondary source

De gli automati, ouero Machine se mouenti

Hero : Alexandrinus · 1589

Ready when you are

Start chatting with Hero of Alexandria now.

20 messages free · No credit card · Available in 50+ languages.

Trial Humy for freeGet a quote for institutions