Physical chemists Black and White Stock Photos & Images

Fritz Haber. Portrait of the German chemist, Fritz Haber (1868-1934), c. 1919 Stock Photo

RM2M91TK0–Fritz Haber. Portrait of the German chemist, Fritz Haber (1868-1934), c. 1919

Dmitry Mendeleyev (1834-1907), was a Russian chemist who formulated the Periodic Table of the elements which grouped the elements according to their atomic structure and chemical properties. His work enabled chemists to identify 'families' of elements with similar chemical and physical properties and has influenced ideas in organic chemistry ever since. In 1955, a new element, atomic number 101, was named mendelevium (Md) in his honour. Stock Photo

RM2K1RGK6–Dmitry Mendeleyev (1834-1907), was a Russian chemist who formulated the Periodic Table of the elements which grouped the elements according to their atomic structure and chemical properties. His work enabled chemists to identify 'families' of elements with similar chemical and physical properties and has influenced ideas in organic chemistry ever since. In 1955, a new element, atomic number 101, was named mendelevium (Md) in his honour.

Vintage portrait photo c1910s of French chemist Paul Sabatier (1854 - 1941) - co-winner of the Nobel Prize in Chemistry in 1912. Stock Photo

RMC0TPK9–Vintage portrait photo c1910s of French chemist Paul Sabatier (1854 - 1941) - co-winner of the Nobel Prize in Chemistry in 1912.

Alchemists using a bain-marie. From illustration published in Manget 's 'Bibliotheca Chemica Curiosa', 1702. Stock Photo

RMERGDW7–Alchemists using a bain-marie. From illustration published in Manget 's 'Bibliotheca Chemica Curiosa', 1702.

Semjonow, Nikolai Nikolaevich, 15.4.1896 - 25.9.1986, Soviet chemist, print based on photograph, ADDITIONAL-RIGHTS-CLEARANCE-INFO-NOT-AVAILABLE Stock Photo

RM2X319RA–Semjonow, Nikolai Nikolaevich, 15.4.1896 - 25.9.1986, Soviet chemist, print based on photograph, ADDITIONAL-RIGHTS-CLEARANCE-INFO-NOT-AVAILABLE

Eminent chemists of our time . alies or suchenzymes as pepsin and trypsin, which are found in thestomach and pancreas respectively. The changes thatthe protein undergoes in the stomach and the smallintestine can be duplicated in the laboratory, and it isthen shown that this hydrolysis proceeds in stages, givingus metaproteins, primary proteoses, secondary proteoses,peptones, polypeptids and amino acids—all more orless well-defined substances, whose chemical complexityis greatest at the protein end, and simplest at the amino-acid end. The crude physical methods of classifying proteinshave point Stock Photo

RM2AJ70DG–Eminent chemists of our time . alies or suchenzymes as pepsin and trypsin, which are found in thestomach and pancreas respectively. The changes thatthe protein undergoes in the stomach and the smallintestine can be duplicated in the laboratory, and it isthen shown that this hydrolysis proceeds in stages, givingus metaproteins, primary proteoses, secondary proteoses,peptones, polypeptids and amino acids—all more orless well-defined substances, whose chemical complexityis greatest at the protein end, and simplest at the amino-acid end. The crude physical methods of classifying proteinshave point

Semjonow, Nikolai Nikolaevich, 15.4.1896 - 25.9.1986, Soviet chemist, ADDITIONAL-RIGHTS-CLEARANCE-INFO-NOT-AVAILABLE Stock Photo

RM2X319H0–Semjonow, Nikolai Nikolaevich, 15.4.1896 - 25.9.1986, Soviet chemist, ADDITIONAL-RIGHTS-CLEARANCE-INFO-NOT-AVAILABLE

Los Angeles, California: c. 1926 Chemist Daniel Hoge pouring some of his newly discovered fuel into his car. The gasoline substitute is made from vegetable compounds for a cent and a half per gallon and is a third more powerful than high test gas. Stock Photo

RM2RDGY12–Los Angeles, California: c. 1926 Chemist Daniel Hoge pouring some of his newly discovered fuel into his car. The gasoline substitute is made from vegetable compounds for a cent and a half per gallon and is a third more powerful than high test gas.

. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 67 Large globules are generally observed after a protracted period of nursing, and if the mother is advanced in age, an increase of the size of the globules has also been observed, and is then accom- panied by the appearance of colostrum corpuscles at the period of menstruation, as also in cases of sickness accompanied Stock Photo

RMPFY97F–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 67 Large globules are generally observed after a protracted period of nursing, and if the mother is advanced in age, an increase of the size of the globules has also been observed, and is then accom- panied by the appearance of colostrum corpuscles at the period of menstruation, as also in cases of sickness accompanied

small boy with microscope at school lesson. student do science experiment with microscope in lab. microscope at lab. Back to school. Pupil looking through microscope . small boy at science camp. Stock Photo

RF2B74CWW–small boy with microscope at school lesson. student do science experiment with microscope in lab. microscope at lab. Back to school. Pupil looking through microscope . small boy at science camp.

French chemist Henri Moissan (1852 - 1907) - winner of the Nobel Prize in Chemistry in 1906 - attempting to make artificial diamonds. Stock Photo

RMC129BR–French chemist Henri Moissan (1852 - 1907) - winner of the Nobel Prize in Chemistry in 1906 - attempting to make artificial diamonds.

RMRDA2CY–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 67 Large globules are generally observed after a protracted period of nursing, and if the mother is advanced in age, an increase of the size of the globules has also been observed, and is then accom- panied by the appearance of colostrum corpuscles at the period of menstruation, as also in cases of sickness accompanied

RMPFY97R–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 33 Milk Containing Medicines. Lewald's experiments have proved that medicinal substances are rapidly conveyed by the milk; so, for instance, lead, arsenic, oxide of zinc, sub-nitrate of bismuth, tincture of iodine and iron, antimony, and mercury salts. ' It has not been determined that milk suffers, under the influ- en

This is what we are testing today. biology education of little boy. School bilogy laboratory. bilogy lab. Back to school. Little boy in the laboratory Stock Photo

RF2HA0HMB–This is what we are testing today. biology education of little boy. School bilogy laboratory. bilogy lab. Back to school. Little boy in the laboratory

RMRDA2DB–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 33 Milk Containing Medicines. Lewald's experiments have proved that medicinal substances are rapidly conveyed by the milk; so, for instance, lead, arsenic, oxide of zinc, sub-nitrate of bismuth, tincture of iodine and iron, antimony, and mercury salts. ' It has not been determined that milk suffers, under the influ- en

RMPFY97C–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. V8 The dimensions of the instrument are chosen to insure sufficient ease of motion and to prevent unnecessary length of stem.. Centesimal Galactometer, or Lactometer. Quevenne's Lactodensimeter. It is weighted to such an extent, that it sinks in a salt solution of 1.042 specific gravity, at 15° C, to a point which is m

laboratory research and development. Chemistry beaker experiment. bearded man teacher with little boy. father and son child at school. Laboratory test Stock Photo

RF2M4CJ2X–laboratory research and development. Chemistry beaker experiment. bearded man teacher with little boy. father and son child at school. Laboratory test

RMRDA2CR–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. V8 The dimensions of the instrument are chosen to insure sufficient ease of motion and to prevent unnecessary length of stem.. Centesimal Galactometer, or Lactometer. Quevenne's Lactodensimeter. It is weighted to such an extent, that it sinks in a salt solution of 1.042 specific gravity, at 15° C, to a point which is m

RMPFY98F–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 14 Bitter: Bitter milk developes its taste only some time after it was milked, and is accompanied by souring. The chemical changes which take place in such milk are not known, but the development of gas seems to indicate a fermentation, the whole being, perhaps, merely an incipient state of putrid decomposition. Milk i

microscope. bearded man teacher with little boy. laboratory research and development. Chemistry beaker experiment. father and son child at school Stock Photo

RF2M79KCW–microscope. bearded man teacher with little boy. laboratory research and development. Chemistry beaker experiment. father and son child at school

RMRDA2E1–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 14 Bitter: Bitter milk developes its taste only some time after it was milked, and is accompanied by souring. The chemical changes which take place in such milk are not known, but the development of gas seems to indicate a fermentation, the whole being, perhaps, merely an incipient state of putrid decomposition. Milk i

RMPFY98D–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 16. JPms ; Pus corpuscles in milk appear as pale globular bodies of varying size. They possess a slightly granulated surface, which disappears on addition of acetic acid, while the corpuscles get con- siderably enlarged.. Please note that these images are extracted from scanned page images that may have been digitally

Back to school. father and son at school. school kid scientist studying science. Little kid learning chemistry in school laboratory. teacher man with little boy. Theres no need to wait. Stock Photo

RF2BWEH9M–Back to school. father and son at school. school kid scientist studying science. Little kid learning chemistry in school laboratory. teacher man with little boy. Theres no need to wait.

ecology and research concept. use magnifying glass. science classroom. small girl with man tutor study chemistry. Microscopy. Laboratory equipment Stock Photo

RF2G2Y0XF–ecology and research concept. use magnifying glass. science classroom. small girl with man tutor study chemistry. Microscopy. Laboratory equipment

RMRDA2D7–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 56 An apparatus for this and the determination of the specific grav- ity, neatly packed in a case and ready for use in hospitals, has been devised by Dr. F. Conrad, and its application been described by him in a pamphlet entitled "Die Untersuchungen der Frauen- milch fuer die Beduerfnisse der aerztlichen Praxis,&q

RMPFY985–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. JPms ; Pus corpuscles in milk appear as pale globular bodies of varying size. They possess a slightly granulated surface, which disappears on addition of acetic acid, while the corpuscles get con- siderably enlarged.. Pus corpuscles and epithelial cells. EpWielial cells are found in milk but rarely, and then, per- haps

RMRDA2DM–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. JPms ; Pus corpuscles in milk appear as pale globular bodies of varying size. They possess a slightly granulated surface, which disappears on addition of acetic acid, while the corpuscles get con- siderably enlarged.. Pus corpuscles and epithelial cells. EpWielial cells are found in milk but rarely, and then, per- haps

RMPFY97N–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 56 An apparatus for this and the determination of the specific grav- ity, neatly packed in a case and ready for use in hospitals, has been devised by Dr. F. Conrad, and its application been described by him in a pamphlet entitled "Die Untersuchungen der Frauen- milch fuer die Beduerfnisse der aerztlichen Praxis,&q

RMRDA2DX–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 16. JPms ; Pus corpuscles in milk appear as pale globular bodies of varying size. They possess a slightly granulated surface, which disappears on addition of acetic acid, while the corpuscles get con- siderably enlarged.. Please note that these images are extracted from scanned page images that may have been digitally

RMPFY98T–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 9 Physical Analysis of Milk. COLOR. Normal: Milk in its normal state is opaque white to yellow. During winter it is more white, while in summer the color is more or less yellow, produced by the richness of the food in chloro- phyll. Plants containing certain coloring substances, may impart certain hues to the color of

RMRDA2EF–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 9 Physical Analysis of Milk. COLOR. Normal: Milk in its normal state is opaque white to yellow. During winter it is more white, while in summer the color is more or less yellow, produced by the richness of the food in chloro- phyll. Plants containing certain coloring substances, may impart certain hues to the color of

RMPFY981–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 26 The apparatus constructed for this purpose by the author is ar- ranged as follows:. ^ is a flask of from 5 to 6 centimeters in width and 6 to 7 cen- timeters in height. On this stands the funnel B, the neck of the funnel being carefully adjusted into the neck of the flask by grinding. The funnel is from 6 to 8 centi

RMRDA2DF–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 26 The apparatus constructed for this purpose by the author is ar- ranged as follows:. ^ is a flask of from 5 to 6 centimeters in width and 6 to 7 cen- timeters in height. On this stands the funnel B, the neck of the funnel being carefully adjusted into the neck of the flask by grinding. The funnel is from 6 to 8 centi

RMPFY98M–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 10 Milk containing blood will, on boiling, change its color from red to brown, since hsemoglobine is decomposed on the application of heat. Rennet and madder will color milk uniformly, and the color thus produced does not undergo change on boiling. Yellow: The yellow color may be produced by certain vegetable pigments.

RMRDA2EB–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. 10 Milk containing blood will, on boiling, change its color from red to brown, since hsemoglobine is decomposed on the application of heat. Rennet and madder will color milk uniformly, and the color thus produced does not undergo change on boiling. Yellow: The yellow color may be produced by certain vegetable pigments.

RMPFY977–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. SI 7. An alcohometer (Tralles) for testing the alcohol. 8. A tested lactobutyrometer with stopper. 9. Pipettes for alcohol of 90 to 92° Tralles, and ether, discharg- ing 10 c.c. or 5 c.c. when blown out. 10. Pipettes for milk adjusted to give 10 c.c. or 5 c.c. between two marks or divisions. The whole lactobutyrometric

. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. Fig. 7. A. Orderly, end-to-end arrangement of micellae in cellulose. B. Disordered, *'brush-heap" arrangement of micellae in cellophan (after Meyer). end-to-end order, while in cellophan (viscose rayon) the arrangement of the micellae is a haphazard one (Fig. 7, B); in the latter case we have what the chemists have characterized as a *'brush-heap." How far the two 21 Univ. Calif. Publ. Zool., 19: 403 (1920). T* types of structure fit in with the physical properties of the substance is yet to be determined. There i Stock Photo

RMREA45Y–. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. Fig. 7. A. Orderly, end-to-end arrangement of micellae in cellulose. B. Disordered, *'brush-heap" arrangement of micellae in cellophan (after Meyer). end-to-end order, while in cellophan (viscose rayon) the arrangement of the micellae is a haphazard one (Fig. 7, B); in the latter case we have what the chemists have characterized as a *'brush-heap." How far the two 21 Univ. Calif. Publ. Zool., 19: 403 (1920). T* types of structure fit in with the physical properties of the substance is yet to be determined. There i

RMRDA2CH–. Chemical and physical analysis of milk, condensed milk, and infants' milk-foods, with special regard to hygiene and sanitary milk inspection : a laboratory guide, developed from practical experience, intented for chemists, physicians, sanitarians, students, etc. Milk; Infants. SI 7. An alcohometer (Tralles) for testing the alcohol. 8. A tested lactobutyrometer with stopper. 9. Pipettes for alcohol of 90 to 92° Tralles, and ether, discharg- ing 10 c.c. or 5 c.c. when blown out. 10. Pipettes for milk adjusted to give 10 c.c. or 5 c.c. between two marks or divisions. The whole lactobutyrometric

RMREA45T–. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. Fig. 7. A. Orderly, end-to-end arrangement of micellae in cellulose. B. Disordered, *'brush-heap" arrangement of micellae in cellophan (after Meyer). end-to-end order, while in cellophan (viscose rayon) the arrangement of the micellae is a haphazard one (Fig. 7, B); in the latter case we have what the chemists have characterized as a *'brush-heap." How far the two 21 Univ. Calif. Publ. Zool., 19: 403 (1920). T* types of structure fit in with the physical properties of the substance is yet to be determined. There i

Physical chemists Black & White Stock Photos

Physical chemists Black & White Stock Photos

Download Confirmation

Password Confirmation

Search Results for Physical chemists Black & White Stock Photos and Images (39)

Filter by agency collections

Search builder

Get great features with your free account

Get inspired for your next project!