Question: What did Eiffel do to deal with the effects of wind?
About the article "Eiffel Tower", section "Wind considerations".

Candidate passages:
"Alec Eiffel" is a tribute to the famous French engineer Alexandre Gustave Eiffel, designer of the Eiffel Tower in Paris.
The song's video features the band playing in a wind-tunnel, a reference to the "pioneer of aerodynamics," with physics formulas in the background. 
At the time the tower was built many people were shocked by its daring shape.
Eiffel was accused of trying to create something artistic without regard to engineering.
However, Eiffel and his engineers, as experienced bridge builders, understood the importance of wind forces and knew that if they were going to build the tallest structure in the world they had to be certain it would withstand them.
In an interview with the newspaper "Le Temps (Paris)" of 14 February 1887, Eiffel said:Eiffel used empirical and graphical methods accounting for the effects of wind rather than a specific mathematical formula.
Careful examination of the tower shows a basically exponential shape (actually two different exponentials, the lower section overdesigned to ensure resistance to wind forces.
Several mathematical explanations have been proposed over the years for the success of the design; the most recent is described as a nonlinear integral equation based on counterbalancing the wind pressure on any point on the tower with the tension between the construction elements at that point.
As proof of the tower's effectiveness in wind resistance, it sways only 6–7 cm (2–3 in) in the wind.
After his retirement from the Compagnie des Etablissements Eiffel, Eiffel went on to do important work in meteorology and aerodynamics.
Eiffels's interest in these areas was a consequence of the problems he had encountered with the effects of wind forces on the structures he had built.
His first aerodynamic experiments, an investigation of the air resistance of surfaces, was carried out by dropping the surface to be investigated together with a measuring apparatus down a vertical cable stretched between the second level of the Eiffel Tower and the ground.
Using this Eiffel definitely established that the air resistance of a body was very closely related to the square of the airspeed.
He then built a laboratory on the Champ de Mars at the foot of the tower in 1905, building his first wind tunnel there in 1909.
The wind tunnel was used to investigate the characteristics of the airfoil sections used by the early pioneers of aviation such as the Wright Brothers, Gabriel Voisin and Louis Blériot.
Eiffel established that the lift produced by an airfoil was the result of a reduction of air pressure above the wing rather than an increase of pressure acting on the under surface.
Following complaints about noise from people living nearby, he moved his experiments to a new establishment at Auteuil in 1912.
Here it was possible to build a larger wind tunnel, and Eiffel began to make tests using scale models of aircraft designs.
In 1913 Eiffel was awarded the Samuel P. Langley Medal for Aerodromics by the Smithsonian Institute.
In his speech at the presentation of the medal, Alexander Graham Bell said:Eiffel had meteorological measuring equipment placed on the tower in 1889, and also built a weather station at his house in Sèvres.
Between 1892 and 1891 he compiled a complete set of meteorological readings, and later extended his record-taking to include measurements from 25 different locations across France.
Eiffel died on 27 December 1923, while listening to Beethoven's 5th symphony "andante", in his mansion on Rue Rabelais in Paris, France.
He was buried in the family tomb in Levallois-Perret Cemetery. 
  Gustave Eiffel (1832–1923), engineer and designer of the Eiffel Tower and the Statue of Liberty  Erika Eiffel, an American woman who famously "married" the Eiffel Tower  
The Eiffel object-oriented language supports pointers in the form of references, which are typed and do not allow any form of pointer arithmetic.
The ECMA standard for Eiffel includes an "attached type" mechanism that claims to guarantee void safety.