noun
definition
A room, building or institution equipped for scientific research, experimentation or analysis.
definition
A place where chemicals, drugs or microbes are prepared or manufactured.
Examples of laboratory in a Sentence
After introductions, Dean was led to a laboratory in the rear of the building.
I'll take the laboratory.
The conclusions derived from the microscopical laboratory were confirmed by actual experiment.
The blood will be tested by a laboratory technician.
In 1890 he was appointed director of the Siemens laboratory at King's College, London, with the title of professor of electrical engineering.
He next went to Paris, where he studied chemistry under Gerhardt, and on his return to London he was appointed director of the chemical laboratory at Guy's Hospital.
In regard to methods and apparatus, mention should be made of his improvements in the technique of organic analysis, his plan for determining the natural alkaloids and for ascertaining the molecular weights of organic bases b y means of their chloroplatinates, his process for determining the quantity of urea in a solution - the first step towards the introduction of precise chemical methods into practical medicine - and his invention of the simple form of condenser known in every laboratory.
There is a good chemical laboratory as well as adequate zoological, ethnographical and mineralogical collections, the most remarkable being Blumenbach's famous collection of skulls in the anatomical institute.
From plants many substances are obtained which at the present time we are unable to make in the chemical laboratory, and of the constitution or composition of which we are in many cases ignorant.
This laboratory, unique of its kind at the time, in conjunction with Liebig's unrivalled gifts as a teacher, soon rendered Giessen the most famous chemical school in the world; men flocked from every country to enjoy its advantages, and many of the most accomplished chemists of the 19th century had to thank it for their early training.
Methods have also been discovered for the electrolytic manufacture of calcium, which have had the effect of converting a laboratory curiosity into a product of commercial importance.
Barium and strontium have also been produced by electrometallurgical methods, but the processes have only a laboratory interest at present.
Prior to 1830, little was known of the process other than that organic compounds generally yielded tarry and solid matters, but the discoveries of Liebig and Dumas (of acetone from acetates), of Mitscherlich (of benzene from benzoates) and of Persoz (of methane from acetates and lime) brought the operation into common laboratory practice.
This council was nominated by the governments of Norway, Sweden, Denmark, Finland, Russia, Germany, Great Britain, Holland and Belgium, with headquarters in Copenhagen and a central laboratory at Christiania, and its aim was to furnish data for the improvement of the fisheries of the North Sea and surrounding waters.
The Siemens and Halske ozonizer, in form somewhat resembling the old laboratory instrument, is largely used in Germany; working with an alternating current transformed up to 650o volts, it has been found to give 280 grains or more of ozone per e.
In chronic disease and in health the use of alcohol as an aid to digestion is without the support of clinical or laboratory experience, the beneficial action being at least neutralized by undesirable effects produced elsewhere.
He became chemist and apothecary to the dukes of Lauenburg, and then to the elector of Saxony, Johann Georg II., who put him in charge of the royal laboratory at Dresden.
The National Physical Laboratory, for making scientific investigations of industrial importance, and for mechanical testing, was opened in Bushey House in 1902.
The sanitary department consists of a board of health, a bacteriological laboratory and an engineer's office, all managed with expert European assistance.
Whilst making the school a strong one on the classical side, he instituted scholarships in natural science, built a laboratory, and gave importance to that side of the school work.
In the laboratory the specific gravity is determined in a pyknometer by actual weighing, and on board ship by the use of an areometer or hydrometer.
Fox, of the Central Laboratory of the International Council at Christiania, has investigated the relation of the atmospheric gases to sea-water by very exact experimental methods and arrived at the following expressions for the absorption of oxygen and nitrogen by sea-water of different degrees of concentration.
Vauquelin's chemical laboratory, afterwards becoming his assistant at the natural history museum in the Jardin des Plantes.
It contains a number of commodious official residences, churches, hospitals, a laboratory, covered market, &c. The port is protected by a breakwater and provided with a pier on which is the customs-house.
The first filter which was more or less completely impermeable to bacteria was the Pasteur-Chamberland, which was devised in Pasteur's laboratory, and is made of dense biscuit porcelain.
Filtration in the chemical laboratory is commonly effected by the aid of a special kind of unsized paper, which in the more expensive varieties is practically pure cellulose, impurities like feric oxide, alumina, lime, magnesia and silica having been removed by treatment with hydrochloric and hydrofluoric acids.
A first-class arsenal, which can renew the materiel and equipment of a large army, embraces a gun factory, carriage factory, laboratory and small-arms ammunition factory, small-arms factory, harness, saddlery and tent factories, and a powder factory; in addition it must possess great store-houses.
Under B - Gun factory, carriage factory, laboratory, small-arms factory, harness and tent factory, powder factory, &c. In a secondclass arsenal there would be workshops instead of these factories.
This circumstance appeared so anomalous that some astronomers doubted whether the surviving lines were really due to calcium; but Sir William and Lady Huggins (née Margaret Lindsay Murray, who, after their marriage in 1875, actively assisted her husband) successfully demonstrated in the laboratory that calcium vapour, if at a sufficiently low pressure, gives under the influence of the electric discharge precisely these lines and no others.
His first research, carried out in Liebig's laboratory at Giessen, was on coal-tar, and his investigation of the organic bases in coal-gas naphtha established the nature of aniline.
Next, at the instance of Charles IV., he went to Spain, where he taught chemistry first at the artillery school of Segovia, and then at Salamanca, finally becoming in 1789 director of the royal laboratory at Madrid.
His attempts at isolating this metal were not completely successful; in fact, metallic calcium remained a laboratory curiosity until the beginning of the 10th century.
Hofmann, in whose own research laboratory he was in the course of a year or two promoted to be an assistant.
Devoting his evenings to private investigations in a rough laboratory fitted up at his home, Perkin was fired by some remarks of Hofmann's to undertake the artificial production of quinine.
In addition to the menagerie, there is an infirmary and operating room, an anatomical and pathological laboratory, and the Society holds scientific meetings and publishes stately volumes containing the results of zoological research.
Fleming, Handbook for the Electrical Laboratory and Testing Room, vol.
The pure carbonate is constantly used in the laboratory as a basic substance generally, for the disintegration of silicates, and as a precipitant.
Authoritative standards and instruments for the measurement of electricity, based on the fundamental units of the metric system, have been placed in the Electrical Laboratory of the Board of Trade.
In England a National Physical Laboratory (N.P.L.) has been established, based on the German institute, and has its principal laboratory at Bushey House, near Hampton, Middlesex.
The chief buildings, besides the churches, are the Dutch theological seminary, Victoria College, Bloemhof girls' school, agricultural college and school of mines, laboratory and school of science and the S.A.
The conditions of this phenomenon have been imitated in the laboratory by Wood, and the corresponding effect obtained.
Among hospitals those of special general interest are the Steevens, the oldest in the city, founded under the will of Dr Richard Steevens in 1720; the Mater Misericordiae (1861),which includes a laboratory and museum, and is managed by the Sisters of Mercy, but relieves sufferers independently of their creed; the Rotunda lying-in hospital (1756); the Royal hospital for incurables, Donnybrook, which was founded in 1744 by the Dublin Musical Society; and the Royal Victoria Eye and Ear hospital, Adelaide Road, which amalgamated (1904) two similar institutions.
A laboratory is maintained for bacteriological and pathological researches and for the preparation of preventive vaccines.
Seeds are tested in the laboratory for purity and germination on behalf of farmers and seed merchants, and scientific investigations relating to seeds are conducted and reported upon.
For the testing of spirits in bulk no more convenient instrument has been devised, but where very small quantities are available more suitable laboratory methods must be adopted.
The laboratory form in common use consists of a bellows worked by either hand or foot, and a special type of gas burner formed of two concentric tubes, one conveying the blast, the other the gas; the supply of air and gas being regulated by stopcocks.
In the ordinary laboratory the Bunsen flame has become universal, and a number of substances, such as the salts of the alkalis and alkaline earths, show characteristic spectra when suitably placed in it.
It seems remarkable, however, that we should not have succeeded yet in reproducing in the laboratory the trunk and main branch of the hydrogen spectrum, if the spectra in question really belong to hydrogen.
Fechner saw psychology deriving advantage from the methods, as well as the results, of his experiments, and in 1879 the first psychological laboratory was erected by Wundt at Leipzig.
Connected with the university are also physiological, pathological and chemical institutes, five clinical departments and a laboratory.