Carl August von Steinheil
Encyclopedia
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
physicist
Physicist
A physicist is a scientist who studies or practices physics. Physicists study a wide range of physical phenomena in many branches of physics spanning all length scales: from sub-atomic particles of which all ordinary matter is made to the behavior of the material Universe as a whole...
, inventor, engineer
Engineer
An engineer is a professional practitioner of engineering, concerned with applying scientific knowledge, mathematics and ingenuity to develop solutions for technical problems. Engineers design materials, structures, machines and systems while considering the limitations imposed by practicality,...
and astronomer
Astronomer
An astronomer is a scientist who studies celestial bodies such as planets, stars and galaxies.Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using...
.
Biography
Steinheil was born in RibeauvilléRibeauvillé
Ribeauvillé is a commune in the Haut-Rhin department in Alsace in north-eastern France.Its inhabitants are called Ribeauvillois.The picturesque town is located around north of Colmar and south of Strasbourg.-History:...
, Alsace
Alsace
Alsace is the fifth-smallest of the 27 regions of France in land area , and the smallest in metropolitan France. It is also the seventh-most densely populated region in France and third most densely populated region in metropolitan France, with ca. 220 inhabitants per km²...
. He studied law
Law
Law is a system of rules and guidelines which are enforced through social institutions to govern behavior, wherever possible. It shapes politics, economics and society in numerous ways and serves as a social mediator of relations between people. Contract law regulates everything from buying a bus...
in Erlangen
Erlangen
Erlangen is a Middle Franconian city in Bavaria, Germany. It is located at the confluence of the river Regnitz and its large tributary, the Untere Schwabach.Erlangen has more than 100,000 inhabitants....
since 1821, then astronomy
Astronomy
Astronomy is a natural science that deals with the study of celestial objects and phenomena that originate outside the atmosphere of Earth...
in Göttingen
Göttingen
Göttingen is a university town in Lower Saxony, Germany. It is the capital of the district of Göttingen. The Leine river runs through the town. In 2006 the population was 129,686.-General information:...
and Königsberg
Königsberg
Königsberg was the capital of East Prussia from the Late Middle Ages until 1945 as well as the northernmost and easternmost German city with 286,666 inhabitants . Due to the multicultural society in and around the city, there are several local names for it...
. He continued his studies in astronomy and physics when he started living on his father's manor in Perlachseck near Munich
Munich
Munich The city's motto is "" . Before 2006, it was "Weltstadt mit Herz" . Its native name, , is derived from the Old High German Munichen, meaning "by the monks' place". The city's name derives from the monks of the Benedictine order who founded the city; hence the monk depicted on the city's coat...
. He was professor for mathematics
Mathematics
Mathematics is the study of quantity, space, structure, and change. Mathematicians seek out patterns and formulate new conjectures. Mathematicians resolve the truth or falsity of conjectures by mathematical proofs, which are arguments sufficient to convince other mathematicians of their validity...
and physics at the University of Munich from 1832 to 1849.
In 1839, Steinheil used silver chloride
Silver chloride
Silver chloride is a chemical compound with the chemical formula AgCl. This white crystalline solid is well known for its low solubility in water . Upon illumination or heating, silver chloride converts to silver , which is signalled by greyish or purplish coloration to some samples...
and a cardboard camera to make pictures in negative
Negative (photography)
In photography, a negative may refer to three different things, although they are all related.-A negative:Film for 35 mm cameras comes in long narrow strips of chemical-coated plastic or cellulose acetate. As each image is captured by the camera onto the film strip, the film strip advances so that...
from the Museum of Art and the Munich Frauenkirche
Munich Frauenkirche
The Frauenkirche is a church in the Bavarian city of Munich that serves as the cathedral of the Archdiocese of Munich and Freising and seat of its Archbishop. It is a landmark and is considered a symbol of the Bavarian capital city.The church towers are widely visible because of local height...
, then taking another picture of the negative to get a positive
Positive (photography)
A positive is a film or paper record of a scene that represents the color and luminance of objects in that scene with the same colors and luminances . Color transparencies are an example of positive photography: the range of colors presented in the medium is limited by the tonal range of the...
, the actual black and white reproduction of a view on the object. The round pictures were about four cm wide, the way to get these pictures was called “Steinheil method.” He made the first daguerreotype
Daguerreotype
The daguerreotype was the first commercially successful photographic process. The image is a direct positive made in the camera on a silvered copper plate....
in Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
.
In 1846 Steinheil was called to Naples
Naples
Naples is a city in Southern Italy, situated on the country's west coast by the Gulf of Naples. Lying between two notable volcanic regions, Mount Vesuvius and the Phlegraean Fields, it is the capital of the region of Campania and of the province of Naples...
to install a new system for weight and measure units. Three years later, he was in the Board of Telegraphy
Telegraphy
Telegraphy is the long-distance transmission of messages via some form of signalling technology. Telegraphy requires messages to be converted to a code which is known to both sender and receiver...
in the Austria
Austria
Austria , officially the Republic of Austria , is a landlocked country of roughly 8.4 million people in Central Europe. It is bordered by the Czech Republic and Germany to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the...
n Trade
Trade
Trade is the transfer of ownership of goods and services from one person or entity to another. Trade is sometimes loosely called commerce or financial transaction or barter. A network that allows trade is called a market. The original form of trade was barter, the direct exchange of goods and...
Ministry, designing a telegraph network for the entire empire, and helped to form the “Deutsch-Österreichischer Telegraphenverein” (German-Austrian Telegraph Society). In 1851 he started the Swiss telegraph network, when he returned to Munich as “Konservator” (curator
Curator
A curator is a manager or overseer. Traditionally, a curator or keeper of a cultural heritage institution is a content specialist responsible for an institution's collections and involved with the interpretation of heritage material...
) of the mathematical-physical collections and ministerial secretary in the Trade Ministry of Bavaria
Bavaria
Bavaria, formally the Free State of Bavaria is a state of Germany, located in the southeast of Germany. With an area of , it is the largest state by area, forming almost 20% of the total land area of Germany...
.
In 1854 he founded the optical-astronomical company C.A. Steinheil und Söhne to build telescope
Telescope
A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation . The first known practical telescopes were invented in the Netherlands at the beginning of the 1600s , using glass lenses...
s, spectroscopes and photometer
Photometer
In its widest sense, a photometer is an instrument for measuring light intensity or optical properties of solutions or surfaces. Photometers are used to measure:*Illuminance*Irradiance*Light absorption*Scattering of light*Reflection of light*Fluorescence...
s (his invention, used to measure brightness). There the great telescopes of the observatories of Upsala
Upsala
Upsala may refer to:*Upsala Glacier, a glacier in Argentina*Uppsala, a city in Sweden, English exonym spelling**Gamla Uppsala, Old Upsala a village near the modern city, important centre in Norse mythology...
, Mannheim
Mannheim
Mannheim is a city in southwestern Germany. With about 315,000 inhabitants, Mannheim is the second-largest city in the Bundesland of Baden-Württemberg, following the capital city of Stuttgart....
, Leipzig
Leipzig
Leipzig Leipzig has always been a trade city, situated during the time of the Holy Roman Empire at the intersection of the Via Regia and Via Imperii, two important trade routes. At one time, Leipzig was one of the major European centres of learning and culture in fields such as music and publishing...
, Utrecht
Utrecht
Utrecht is a city in the Netherlands.The name may also refer to:* Utrecht , of which Utrecht is the capital* Utrecht , including the city of Utrecht* Bishopric of Utrecht* Roman Catholic Archdiocese of Utrecht...
, among others, were made. Refractors and reflector
Reflector
-Science:* Reflector, a device that causes reflection * Reflector , used to control lighting contrast* Reflecting telescope* Reflector , the part of an antenna that reflects radio waves...
s with silver-covered mirrors were among the products. The silvering was done in a process developed by his friend Justus Liebig. From 1862, his sons continued his company.
Steinheil died in Munich in Bavaria
Bavaria
Bavaria, formally the Free State of Bavaria is a state of Germany, located in the southeast of Germany. With an area of , it is the largest state by area, forming almost 20% of the total land area of Germany...
in 1870 where his grave still can be found on the Alter Südfriedhof
Alter Südfriedhof
The Alter Südfriedhof is a cemetery in Munich, Germany. It was founded by Duke Albrecht V as a plague cemetery in 1563 about half a kilometer south of the Sendlinger Gate between Thalkirchner and Pestalozzistraße.-History:...
.
Inventions
- Ground electricity
- print telegraph (not made public)
- electric clockClockA clock is an instrument used to indicate, keep, and co-ordinate time. The word clock is derived ultimately from the Celtic words clagan and clocca meaning "bell". A silent instrument missing such a mechanism has traditionally been known as a timepiece...
- Steinheil script (code to print dots on paper via telegraph, not used due to the adoption of the Morse CodeMorse codeMorse code is a method of transmitting textual information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment...
) - Steinheil doublet, an achromatic doublet with the flintglass element first
- Silver coating of curved glass surfaces (together with Léon FoucaultLéon FoucaultJean Bernard Léon Foucault was a French physicist best known for the invention of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation...
) paving the way for the rise of reflecting telescopeReflecting telescopeA reflecting telescope is an optical telescope which uses a single or combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century as an alternative to the refracting telescope which, at that time, was a design that suffered from...
s.
External links
- http://chem.ch.huji.ac.il/~eugeniik/history/steinheil.html