This part is not complete yet. The stories with no link will be added later.

• ps pdf How Newton `revealed' to Leibniz his main discovery in mathematics
• How Bernoulli and Leibniz tested what Newton really knew (the brachistochrone problem).
• Light I Reflection. The earliest discovery about the nature of light
• Light II How to rescue drowning people, and how Pierre Fermat `explained' refraction
• Little Jo and her pig
• Airplane and the wind
• Gravity Train Project (Solution and historical remarks posted 10/21) See also A radio broadcast on this train.
• The Fastest Gravity Train (TGV brachistochronique, as it is called on the other end)
• Brief history of clock making and of the problem of longitude.
• How to make better clock I ( pendulum)
• How to make better clock (tautochrone pendulum)
• How clocks work (according to Andronov, Vitt and Khaikin)
• Claude Ptolemy and his `Almagest'
• Kepler and his laws
• Universal gravity
• Who discovered the Universal Law of Gravity, and what does it mean `to discover'.
• How to make steam engines
• Why the first transatlantic cable failed
• How to chase the U-boats 10/21)
• Can differential equations save your life?
• String with beads
• Why airplanes fly and ships sail (A lecture from my Complex Variables course, fall 2009).
• Jet colliding with a plane (from the same CV course)
• High-explosive anti-tank warheads (from the same CV course)
• Cisotti formula
• Fulton's Skyhook
• Cellar theory (Why it is possible to preserve ice in summer?)