A group of six amateur scientists with an interest in natural history gathered at a private residence at High and Second Streets in Philadelphia on January 25, 1812, and founded the Academy of Natural Sciences of Philadelphia for, according to its charter, “the encouragement and cultivation of the Sciences” and “the advancement of useful learning.” These enthusiastic, mostly young men, ...
From the aeronauts of the early republic to the jets, missiles, and rockets of the Cold War era, the growth and development of the aeronautical and aerospace industry in the Philadelphia region has exemplified a gradual shift from amateur pursuits to a more formalized industry and infrastructure. Across several centuries, the city and surrounding suburbs ...
Well before the Declaration of Independence, in 1743 Benjamin Franklin (1706-90) and his friend the Quaker botanist John Bartram (1699-1777) established the American Philosophical Society in Philadelphia as a declaration of scientific independence from Great Britain’s scientific domination. The APS developed from a group of local intellectuals keen on expanding human knowledge to serve ...
During the eighteenth and nineteenth centuries, dissection and study of human corpses became the primary method for medical students to gain intimate visual and tactile knowledge of the body and prepare to perform surgery on the living. As the chief medical city in the United States during this period, Philadelphia also became the leading center of anatomical ...
Philadelphians embraced the study of celestial phenomena and bodies, such as stars, planets, and comets, from an early date. As early as 1769, the American Philosophical Society’s involvement in tracking that year’s transit of Venus gained transatlantic scientific attention. Astronomy remained a popular scientific pursuit throughout the region’s history; the Franklin Institute and ...
Beginning in the eighteenth century with the botanical enthusiasts who explored the world around them as part of a larger interest in natural history, botany became an integral part of the Philadelphia region’s national and international reputation. It brought scholars and enthusiasts from across the globe to study and explore Philadelphia’s collections and gardens, influenced ...
Since the eighteenth century, chemical or chemical processing industries have been an important part of the economy of Philadelphia and the Delaware Valley region and have reflected larger trends in the industry. The earliest chemical companies manufactured products such as sulfuric acid and white lead pigments for local consumption, while other manufacturers, such as tanners, ...
Philadelphians used chemistry to enhance manufacturing, household practice, and artisan trades, mixing scholarly with practical aims from the outset. Furthermore, chemistry’s relationship to other scientific disciplines, including botany, geology, and medicine, made Philadelphians particularly keen to promote and diffuse chemical knowledge. Encouraged by widespread interest in chemistry between ...
Clockmaking in colonial and early republican Philadelphia and its environs was considered an intellectual profession requiring great artisanal skill and scientific knowledge. Among rural communities surrounding the city, the mathematical precision and mechanical intricacy of the profession put it at a superior rank to the crafts of blacksmithing and carpentry. Clockmakers like David Rittenhouse ...
In the 2000s and 2010s, nearly 30 co-working spaces opened in the Philadelphia area. These spaces were designed to foster a collaborative atmosphere, where clients could share innovations and ...
One of the oldest professional medical societies in the United States, the College of Physicians of Philadelphia was founded in 1787 “to advance the science of medicine and to thereby lessen human misery.” At the time, Philadelphia, home to the first general hospital and medical college, was the center of American medicine. The College of Physicians of Philadelphia created professional ...
As dentistry slowly emerged as a profession in the eighteenth and nineteenth centuries, innovative dentists in Philadelphia helped to shape dental care, procedures, and tools. Beginning in the mid-nineteenth century, dental colleges, journals, and societies contributed to the expansion of dental training and practice, which gradually but increasingly became accessible to women and people of ...
The Philadelphia area has played a major part in paleontology, the study of past life through fossils, yielding discoveries that have helped to illuminate millions of years of existence. In the early 1800s, Philadelphia became the birthplace of vertebrate paleontology, the study of ancient backboned animals, and the Academy of Natural Sciences became a hub for paleontological work. The unearthing ...
Recorded earthquakes in the Philadelphia region have been relatively few and small in magnitude. Nevertheless, southeastern Pennsylvania has had the most seismic activity of all regions in Pennsylvania, perhaps emanating from stress on the North American tectonic plate that remained after the breakup of the continents about 200 million years ...
Developed in Philadelphia during World War II, the Electronic Numerical Integrator and Computer (ENIAC) made history as the world’s first general-purpose, nonmechanical computer. Unveiled at the University of Pennsylvania’s Moore School of Electrical Engineering in 1946, the ENIAC consisted of 40 nine-foot-high cabinets containing 18,000 vacuum tubes, 10,000 capacitors, 6,000 switches, and ...
Philadelphia and its nearby localities became important sites for entomological study by the nineteenth century due to the presence of the Academy of Natural Sciences (established in 1812) and the American Entomological Society (1859). Entomological writing and illustration also flourished in this center for book production. Over time, entomologists’ interest in insects shifted from the ...
In 1883 Francis Galton (1822–1911), an English statistician and sociologist, invented a term for his decades-long genealogical investigations into “fit” and “unfit” families: eugenics, the scientific study of being well-born. While Galton tended to focus on the fit, in the United States, enthusiasts for eugenics more often focused on those deemed biologically unfit. Elwyn, Pennsylvania, ...
For more than two centuries, Philadelphia’s Fairmount Waterworks have provided two vitally important, but different, services to the city. The first began when Philadelphia’s municipal water system—the first of its kind anywhere in the modern world—was moved to Fairmount and enlarged. Thanks to its charming design and placement beside the bucolic Schuylkill River, its second and more ...
Introduced in the nineteenth century, fire escapes supplemented interior stairways to allow people on the upper floors of buildings to escape in case of fire. Fire escapes can be portable or fixed on or in buildings, and they have taken many forms. Philadelphia enacted the first municipal law mandating fire escapes on all sorts of ...
On February 5, 1824, a group of Philadelphians led by Samuel Vaughn Merrick (1801–70) and William Hypolitus Keating (1799–1840) met at the courthouse on Sixth and Chestnut Streets to found the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts. Seeking to emulate a passion for useful science, in the spirit of Benjamin Franklin (1706–90), institute members ...
From barns and airfields throughout the Delaware Valley, during the twentieth century innovative individuals and local companies made greater Philadelphia the nation’s cradle of rotary-wing aviation. They successfully launched autogiros, gyroplanes, and helicopters, and the Boeing Company paired with Bell Helicopters in Buffalo, New York, to produce the world’s first production tilt-rotor ...
Over the course of three hundred years, urbanization and habitat loss in the Philadelphia region threatened amphibians and reptiles that once fostered rich scientific discussions. Nevertheless, pioneering herpetologists from the area influenced medical, paleontological, and ecological studies of these creatures in North ...
The outbreak of a mysterious pneumonia-like disease in the Philadelphia region in the summer of 1976 puzzled doctors and public health officials. Many of the sick had attended an American Legion convention at the Bellevue-Stratford Hotel, giving the new illness the name “Legionnaires’ disease.” Months later, doctors discovered that bacteria in the hotel’s air conditioning ...
While Meriwether Lewis and William Clark became well-known for crossing the Rocky Mountains and canoeing across the Columbia River in the West, the inspiration for their Corps of Discovery Expedition (1803-1806), better known as the Lewis and Clark Expedition, emerged from Philadelphia's libraries and scientific ...
For over one hundred and twenty years, railway locomotives were built in Greater Philadelphia. From the pioneering manufacturers of steam locomotives in the Spring Garden section of the city in the 1830s to the sprawling plant of the Baldwin Locomotive Works in Delaware County in the twentieth century, the products, the companies, and the buildings ...
In colonial Philadelphia, physicians and other medical practitioners contended with a difficult disease environment. The best medical efforts of the day were often inadequate or even harmful in the face of chronic illness and epidemic ...
Philadelphians have pursued significant scholarly and popular interests in meteorology, the scientific study of the atmosphere, since the eighteenth century. Pioneering individuals, including Benjamin Franklin (1706–90) and Reuben Haines (1786–1831), tracked meteorological data, and scientific societies made the practice increasingly systematic by the late nineteenth century. Short-term ...
Philadelphia’s fascination with Egyptian mummies began modestly, but by the end of the nineteenth century the city held some of the largest collections of mummies in the United States. Although some mummies had only a transient stay in Philadelphia or were lost to the ravages of time, many remained in museums to teach later generations ...
Mirroring a nation-wide wave of commercial interest in nuclear power plants in the 1950s and 1960s, the Philadelphia Electric Company (PECO) and other energy companies in Greater Philadelphia jumped at the opportunity to develop relatively inexpensive electricity for the region. Nuclear power plants began servicing the region’s electrical grid in 1967. However, as was the ...
The history of nursing in the Philadelphia area is one of long and storied traditions. Men and women have often nursed their sick families and friends at home, which for millennia represented the best, safest, and most comforting site for treatment and care. Bringing a stranger into that home to provide nursing care was a ...
While Philadelphians maintained scientific interest in birds between the eighteenth and twenty-first centuries, the region became an important scholarly center for ornithology by the early nineteenth century. Primarily known for taxonomy (the science of classifying organisms), ornithological study transformed in the 1860s after the scientific community discovered a conclusive evolutionary link ...
Home to the first paper mill in the British American colonies, Philadelphia was the nation’s primary papermaking center through the early nineteenth century. The region lost its national preeminence in papermaking in the late nineteenth century, but it continued to host important makers of paper and paper products. Skilled papermakers, including William Rittenhouse (1644–1708), a ...
Inspired by eighteenth-century Enlightenment ideals celebrating humankind’s capacity to learn and use new information, the artist Charles Willson Peale (1741-1827) conceived his Philadelphia Museum. In it, Peale intended the works of man and nature to coexist for the edification of all. The Philadelphia Museum, Peale said, served “to instruct the mind and sow the seeds of Virtue” in the ...
Philadelphia played a key role in the birth of the American pharmaceutical industry in the early nineteenth century, and the region remained a major pharmaceutical center into the early twenty-first century. Home since the colonial period to many of America’s leading scientific, educational, and medical institutions, Philadelphia was well-positioned to support the emergence of a ...
Although later regarded as a pseudoscience grounded on racism and racial discrimination, phrenology initially represented an emerging science of investigating individuals’ intellectual capacity and mental faculty based upon the physical features of their skulls and brains. Originated in Europe at the end of the eighteenth century, phrenology came to Philadelphia as a new science in ...
Reaching hundreds of miles to the Philadelphia area from western Pennsylvania, pipelines carrying oil and gas were critical to Philadelphia’s emergence as an industrial power and linked the fates of suppliers and consumers for more than 160 years. The development of the pipelines, marked by both challenge and innovation, supplied energy for residential and business consumption as well as ...
For thousands of years before European settlement, Native Americans inhabited North America and left behind evidence of their lives in the form of artifacts, which archaeologists have studied and interpreted. The archaeological record for Philadelphia and the surrounding area reveals the complex relationship between prehistoric peoples and the region’s changing environment. Archaeologists also ...
Beginning in the mid-nineteenth century, Philadelphia became a leading center of printmaking in the United States. While publishing companies had operated in the city since the eighteenth century, the technological innovations of the firm of Peter S. Duval (1804/5-86) transformed Philadelphia’s lithographic trade into a booming industry. Duval’s commitment to improving printmaking methods ...
From the moment Native Americans, Europeans, and Africans came together in the Delaware Valley, they confronted a host of health threats. Philadelphia’s earliest public health efforts reflected the lack of scientific understanding of infectious diseases, and usually began only after an outbreak commenced. After the terrible 1793 yellow fever epidemic, Philadelphia’s leaders founded a ...
From radio’s inception to contemporary times, Philadelphia-area innovators, performers, and manufacturers contributed to shaping the industry. Like its technological forerunner, the telegraph, radio made possible the direct, real-time transmission of information. The immediacy and intimacy of radio waves arriving directly into listeners’ homes made radio revolutionary. The medium quickly ...
From radio’s earliest days, college and high school students in the Greater Philadelphia area have tested its boundaries. Student radio has been democratizing and distinct. Unrestrained by advertising sponsors, though sometimes constrained by school administrators’ concerns over content and control over budgets, students have freely experimented with format, content, and technology, and each ...
Birthplace of the American record industry, the Philadelphia region has been home to a thriving industry of recording studios and record companies for more than a century. Philadelphia's unique diversification of industry, entrepreneurship, and musical creativity of its racially diverse communities has produced a unique Philadelphia "sound" with national and international ...
Philadelphia ranked as one of the nation’s foremost saw manufacturing centers for much of the nineteenth and twentieth centuries. Large-scale saw making began locally in the early nineteenth century, and by midcentury a number of major saw manufacturers operated in the city, including the world’s largest, Henry Disston’s Keystone Saw Works. Disston created a unique ...
While eighteenth-century Philadelphians looked almost exclusively to the east and the Delaware River to connect them to the wider world, by the turn of the nineteenth century they looked increasingly to the Schuylkill River and the west. After several failed attempts to fund improvements that would make the rapid-filled Schuylkill River navigable in the 1780s ...
The "Scientific Management" movement was born in early twentieth-century Philadelphia factories but spread rapidly, transforming not only management techniques but also popular conceptions of industrialized society itself. According to its founders, the system simply sought the "one best way" to perform any task. But its time-study engineers, along with the assembly line, came to symbolize ...
Since the eighteenth century, Philadelphia-area scientific societies have promoted scholarship and innovation, increased access to scientific knowledge and played an important role in the professionalization of various disciplines. Longstanding institutions, including the American Philosophical Society (1743), the Academy of Natural Sciences (1812), and the Franklin Institute (1824), have ...
Telegraphy transformed communication in the nineteenth century, allowing information to travel nearly instantly across the nation and the world. Developing alongside railroad transportation, the telegraph bridged the distance between Philadelphia and cities across the ...
The telephone revolutionized communications by allowing messages to be transmitted instantly to nearly anywhere in the world. Following the public debut of the device at the Centennial Exhibition of 1876, Philadelphia became home to many of telephony’s milestones and a center of telephone innovation, promoted by pioneers and supporters including inventor Alexander Graham Bell (1847-1922) ...
The Philadelphia region had a key role in the ascent of television in American popular culture. From the manufacturing of television sets to the production of innovative programming, researchers, technicians, and creative talents in the region produced many of the “firsts” that propelled television to success as a new mass medium in the twentieth ...
Since the earliest days of railroads, collisions and derailments have been a constant danger for both passengers and railroad workers. Large-scale disasters have been relatively rare in the Philadelphia region, despite its important role in railroad operation and development. However, news coverage, public outrage, and government intervention resulting from rail accidents around the country ...
Philadelphia in the late nineteenth century stood shamefully high among large American cities in rates of death from typhoid fever (also known as enteric fever). Caused by a type of Salmonella bacterium, the disease had become common in Philadelphia and other cities with crowded populations, inadequate disposal of human waste, and lack of water treatment. ...
The University City Science Center, the nation’s first and oldest urban research park, represents a pivotal chapter in the story of American urban renewal, its associated racial tensions, and the important role played by institutions of higher education. Established in 1960 in West Philadelphia adjacent to and intertwining the campuses of the University of Pennsylvania ...
The Penn Museum—officially the University of Pennsylvania Museum of Archaeology and Anthropology—originated in 1887 through the combined efforts of university scholars, administrators, and Philadelphia philanthropists. Created as part of a broader movement to expand, modernize, and professionalize the university, throughout its history the museum also performed a public role of bringing ...
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