HERO'S ENGINE (EOLIPILE) (LSE) A functional glass model of the earliest form of steam turbine. Comprising a borosilicate glass bulb 70mm dia. approx., with side arms bent at right angles and formed into jets at their tips. The bulb is carried upon a metal stand, which leaves it free to rotate about its horizontal axis. If about 25 to 30ml of water are introduced into the bulb and boiled the issuing steam causes rapid rotation. Supplied without burner. Qty :