They are three versions of each movie, each one available with legends in Portuguese or in English. The version that you will see in your browser depends on your choices of Internet Connection Speed in the QuickTime Settings Control Panel and Prefered Language in the QuickTime Plug-in settings. Choose between the 28.8/33.6 Modem, 56K Modem/ISDN, and 112K Dual ISDN options to see, respectively, low, medium, and high quality movies.

Press to illustrate the low compressibility of liquids	Model of a diving bell (2 movies)	Capstan
Machine with ivory drum	Machine with cogwheels and worm screw	Pile-driver
Crane model	Crane model (3 movies)	Crane model
Model of cart, called "La Gabrielle", for transporting masonry	Revolving machine of Botelho de Lacerda (2 movies)	Richard Trevithick steam engine (3 movies)
Nollet's pyrometer	Flint trigger to show that air is indispensable to combustion	Paper painting to be observed obliquely
Paper painting to be observed obliquely	Spherical magnet mounted on a stand	Magnetic declination needle
Electric machine with glass disc	Model of the Bréguet electrical telegraph	Crane
Microscope (5 movies)	Human eye model	Prism (2 movies)
Arago's polariscope	Device to show that the air resistence increases with the surface (2 movies)

This page created on a Macintosh using PhotoPage by John A. Vink.