Scientific Instruments

Nasmyth, a Scottish engineer known for his invention of the steam hammer, combined an avid interest in astronomy and photography. Carpenter was an astronomer at the Greenwich Observatory. Together they constructed plaster models of the lunar surface.

In this illustration, Chérubin d’Orléans adopted the lunar map of Hevelius. The putti are observing the Moon with telescopes equipped with the “pantograph,” a perspectival tool devised by d’Orléans.

Many textbooks begin their list of early microscopists with Leeuwenhoek, who published most of his discoveries in the Philosophical Transactions of the Royal Society of London. This volume is an anthology of many of those articles. Leeuwenhoek’s microscope had only a single, powerful lens.

While visiting Florence, Niceron was shown a unique perspective drawing tool devised by the painter Cigoli, one of Galileo’s friends. He viewed examples of anamorphic drawing techniques and Alberti’s perspective boxes. All of these make an appearance in this treatise.

This is a replica of a microscope that is very much like one of the microscopes Galileo might have created. Indeed, it was once believed to have been made by Galileo, but is now attributed to Campani.

Adams’ work remained in publication for decades helping generations of microscopists and hobbyists explore the unseen world.  

Once an altar is lighted, the temple doors open automatically. Hero fashioned all sorts of marvelous automata using steam, air pressure, hydraulics and falling weights. Devices included an automatic wine dispenser, siphons, garden fountains, engines, pumps, steam-powered toys, and magic tricks...

Featuring Galileo's Handwritting. Galileo dedicated the manual for his engineering compass to young Cosimo II de Medici, whom he had tutored in mathematics the previous summer.

Schickard, a friend of Kepler’s, designed this planisphere or “astroscopium” to calculate the positions of the stars for any day and hour of the year. Schickard also devised a calculating machine to produce astronomical tables according to Kepler’s laws.

These 3 broadsides, issued approximately 2 weeks apart, contain the first detailed illustrations of Mars.

In this mathematics textbook, Schott explained the rod-based calculating machine designed by his fellow Jesuit, Athanasius Kircher. The philosopher Leibniz also created a calculating machine, described in 1666, which he offered to the emperor of China.

Galileo kept the design of his engineering compass carefully guarded, yet a dispute over intellectual property rights ensued. In 1607, Baldassar Capra published under his own name a Latin translation of Galileo's Compasso, including instructions for making the instrument.

Although Galileo rushed to print his telescopic observations, he did not invent the telescope. Jacob Metius was one of several Dutchmen with a claim to the invention of the telescope. This book by Jacob’s brother mentions Jacob’s telescopic observations of the satellites of Jupiter.

After a century of calculating instrument innovation, Partridge created the slide-rule. Edmund Gunter designed a logarithmic scale in 1620. William Oughtred placed two logarithmic scales side-by-side to perform multiplication and division in 1630.

After Capra, the design of Galileo’s compass became widely known. Later editions included illustrations of Galileo’s instrument.

The Academy of the Lynx (Accademia dei Lincei) dissolved after the death of its founder, Prince Federigo Cesi. In its place, Grand Duke Ferdinand II established the Academy of Experiment in Florence, which carried further the research program of Galileo.

Kepler’s major correspondence is gathered here in two rare volumes bound together. Bernegger, one of Kepler’s closest friends, also published Latin translations of Galileo’s Compass, Letter to the Grand Duchess Christina, and Dialogue on the Two Chief Systems of the World.

These notes comprise one of the most important papers in the history of computing. Lovelace explained how Babbage’s “analytical engine,” if constructed, would amount to a programmable computer rather than merely a calculator.

The Academy transformed the thermoscope into the thermometer by adding a graduated scale (which had been done by Galileo and his friends) and by sealing the tube to make it independent of air pressure.

Galileo’s physics, applied to medicine: Santorio Santorio (also known as Sanctorio or Sanctorius) practiced medicine in Padua, in the Venetian Republic.

Danti was a cosmographer in the court of Cosimo I de Medici. Visitors to Florence today may view his stunning maps of the world in the Hall of Maps of the Palazzo Vecchio, as well as armillary spheres and a quadrant he mounted on the facade of the church of Santa Maria Novella.

With a telescope, Mayr observed the four satellites of Jupiter, accurately determining their periods of revolution. He named them Europa, Io, Ganymede and Callisto, names which are still used today. In this work Mayr also considered Tycho’s objection to Copernicus based upon star sizes.

To clarify the ability of the barometer to measure the pressure of the atmosphere, Pascal left a barometer at a low elevation in the town of Clermont, in Auvergne, while taking another with him as he climbed the Puy-de-Dôme.

Schott was among the first to report the “Miracle of Magdeburg,” the sensational story of Otto von Guericke’s public demonstration of the reality of the vacuum. Von Guericke bolted two large hemispheres together, then evacuated the air inside them with his air pump.

In a comical ballad called “The Star-Splitter,” Robert Frost described a man outdoors splitting firewood after the first frost of autumn: “You know Orion always comes up sideways.

This book explains how to use the terrestrial and celestial globes, an armillary sphere (which shows the movements of the sky), and an orrery (which models the motions of the planets). Martin operated an instrument shop in London.

The frontispiece of Riccioli’s treatise depicts not two, but three major systems of the world. The Ptolemaic system rests discarded (lower right corner) because of the phases of Venus and Mercury (upper left corner). All-seeing Argus looks on, holding a telescope.

Even today, while we adopt the Copernican system, we still teach observational astronomy and navigation by the stars using the traditional geocentric instruments: nocturnal dials, celestial globes, and armillary spheres.

Direct observational proof of the motion of the Earth remained difficult to find, even as late as the generation of Isaac Newton.

The Foucault pendulum swings in a constant plane or direction, and thus reveals the rotation of the Earth turning underneath.