Modern reproduction of the first electric battery invented by Alessandro Volta in 1800. Base and top are wooden. Between the base and top rests a stack or pile of 46 copper-zinc cells. Electrodes used to tranfer the…

Small cylindrical plastic white bottle with safety cap used for holding pills. Medicine bottle is empty.

Square plastic pill bottle with safety cap. Medicine bottle is empty.

Distillation is a method of separating chemical substances based on differences in their volatilities in a boiling liquid mixture. A distilled beverage is a liquid meant for consumption containing ethyl alcohol…

Round silver aluminum necklace consisting of numerous triangular shaped pieces arranged in an overlapping pattern; hook and eye clasp are attached via thread to the main body of the necklace.

Small plastic cylindrical medicine bottle. Safety cap is missing. Medicine bottle is empty.

Teddy Ruxpin is an animatronic children's toy in the form of a talking 'Illiop', a creature that looks like a bear. The bear's mouth and eyes move while "reading" stories played on an audiotape cassette deck built into…

William Henry Perkin depicted in his laboratory. Perkin, center, examines test dyeing of silk taffeta with mauve aniline dye. Left, his father, the backer of the plant, stands behind Perkin and admires the fabric. In…

Soldiers are of various different designs; each seems to be hand painted.

Developed in 1972, the HP-35 was Hewlett Packard's first pocket calculator and the first pocket calculator ever to have transcendental functions. Twenty HP engineers spent two years and approximately $1 million…

Cardboard box with color printing on lid, showing young men and women engaged in chemical testing of environmental factors (air, water). Inside is a blue plastic tray with wells for test equipment, including a…

Used to create silicon ingots for use in the semiconductor industry, this crystal puller consists of two main parts, the furnace and the puller: the furnace is cylindrical and located at the bottom of the instrument, it…

American Optical Corporation Sixty student model monocular microscope features American Optical Spencer objective lenses.

American Optical Corporation was a successor to the Spencer Lens Company, founded by Charles…

Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…

Wooden grey-blue case that opens on a hinge. Inside, the left side of the case contains a sealed glass bottle of mounting cement, a sealed glass bottle of thinner, small cardboard boxes labeled "Microcraft Microscopy…

Leeches have been used in medicine since ancient times. During the Victorian era, French physician Francois-Joseph-Victor Broussais sparked a boom in the leech trade with his popular theory that diet, bloodletting, and…

Facing a glowing furnace at left, a bearded alchemist in green with a red cap looks at a flask of green liquid. A young assistant in a red singlet stands to his right. Laboratory apparatus is seen in foreground and…

Standing portrait of George Trapp, a blue-collar worker, looking left; dressed in work clothes including a cap, white shirt, vest, and smock; holding the neck of a green glass carboy in left hand; to left, crates used…

This type C medium-sized research microscope was manufactured by Ernst Leitz of Wetzlar, Germany. Featuring a black enamel horseshoe-shaped base and arm, this microscope also includes a reflecting mirror, eye piece,…

Chemistry sets reached their heyday in the 1950s, but production of them began in the United States during World War I. Playing with a toy chemistry set inspired many a boy to become a chemist, and not until the late…

A bearded man reading a book is standing in a great vaulted interior. A large window illuminates the room with warm daylight, reflecting against the glassware sparsely placed on upper shelves. At right, a long-necked…

A: Bulb containing mercury attached to a glass tube of narrow diameter. Thermometer has Celsius scale with 0-100 degree range.

B: Protective cardboard tube for the thermometer (not digitized).

Partial immersion…

Black metal (iron) U-shaped base with cylindrical brass (plated) parts; two metal slide clips mounted to slide plate; rotatable eye piece lowered or raised by the adjustment of top right knob; circular mirror underneath…

Set of celluloid billiard balls with brown cue ball; balls are divided in bottom section of square wooden box by cardboard dividers.

In the center of a large room, a surgeon in a red cap and apron kneels to apply a leech to the foot of his bearded patient. Scenes of bloodletting and leechcraft are common in such images of doctors' surgeries. The…