Inventions

A:

Modern dry cleaning was invented by two men in the mid-19th century: a Frenchman, Jean Baptiste Jolly, and an American, Thomas Jennings. Though their discoveries occurred independently of each other, they both used various chemical solvents to improve upon the cleaning practices of the day.

See Full Answer
Filed Under:
  • Who invented the microscope?

    Q: Who invented the microscope?

    A: Zacharias Janssen is the Dutch spectacle maker who is widely credited as the inventor of the first compound microscope. Although many of the archives surrounding Janssen's invention have been lost, historians believe that Zacharias and his father Hans invented the first microscope at some point in the 1590s.
    See Full Answer
    Filed Under:
  • Who invented dance?

    Q: Who invented dance?

    A: Because dance was used in ancient times, it is not credited to the contribution of a specific person. Dance was first used in ancient cultures in ritualistic practices. For example, in Egypt, Greece and India, dancing before a god was an important part of temple worship.
    See Full Answer
    Filed Under:
  • What did the Egyptians invent?

    Q: What did the Egyptians invent?

    A: The Ancient Egyptians are the well-known constructors of the Pyramids and the Great Sphinx. They invented hieroglyphs, one of the earliest writing systems, and a number system for whole numbers and fractions, including rudimentary algebraic formulations. Egyptians created breath mints, toothpaste, the calendar and bowling. Perhaps their greatest invention, however, was papyrus scrolls, which allowed information to be collected, transported and stored for immediate use or for future generations.
    See Full Answer
    Filed Under:
  • Why was money created?

    Q: Why was money created?

    A: Money was originally created to serve as a substitute store of value to bypass problems with the barter system. If you had an apple tree but needed eggs, you needed to find someone with a chicken coop who wanted apples. Currency allows you to perform barter by proxy. You sell your apples for currency, and then you can buy anything you like from traders who accept that currency.
    See Full Answer
    Filed Under:
  • Who discovered rabies?

    Q: Who discovered rabies?

    A: Rabies was discovered as a human disease by Girolamo Fracastoro, a 16th century Italian physician. The disease has been recognized as an animal disease for thousands of years. The rabies vaccine was developed in 1885 by Louis Pasteur.
    See Full Answer
    Filed Under:
  • Who invented the Hubble Space Telescope?

    Q: Who invented the Hubble Space Telescope?

    A: The Hubble Space Telescope was invented by Lyman Spitzer, who first proposed the concept in 1946. Spitzer, a native of Toledo, Ohio, continued analyzing photos from the Hubble Space Telescope until his passing in 1997.
    See Full Answer
    Filed Under:
  • On what date was the light bulb invented?

    Q: On what date was the light bulb invented?

    A: According to the US Department of Energy, Thomas Edison and his team had produced a functional incandescent light bulb by October 1879. Before this, British inventors had been experimenting with arc lamps. The first "constant electrical light" was invented in 1835, after which inventors continued to make small improvements until Edison's commercial breakthrough.
    See Full Answer
    Filed Under:
  • Who invented the Band-Aid?

    Q: Who invented the Band-Aid?

    A: The band-aid was invented by Earle Dickson, who was an employee of Johnson & Johnson, and his wife Josephine. His wife was constantly cutting or burning herself and needed to find relief.
    See Full Answer
    Filed Under:
  • When were paper plates invented?

    Q: When were paper plates invented?

    A: Paper plates were invented by Martin Keyes in the early 20th century. The inventor began to market his paper plate molding machine in 1903 after founding the Keyes Fibre Company. His first paper plate molding machine was capable of manufacturing 50,000 paper plates per day.
    See Full Answer
    Filed Under:
  • When was the rocking horse invented?

    Q: When was the rocking horse invented?

    A: While the actual date of its invention is unknown, the rocking horse is known to have been present at around 4000 B.C. in ancient Greece and Persia. Rocking horses with half-moon bases are thought to have originated from cradles. The oldest known rocking horse still in existence as of 2014 is from around 1610 and is thought to have belonged to King Charles I.
    See Full Answer
    Filed Under:
  • Who invented fabric softener?

    Q: Who invented fabric softener?

    A: Fabric softeners were invented in the mid 1900s by the textile industry to reduce static and improve the comfort of clothes. Scientist Conrad J. Gaiser later invented the more convenient dryer sheet in the 1960s.
    See Full Answer
    Filed Under:
  • Who invented the rifle?

    Q: Who invented the rifle?

    A: Marin le Bourgeois developed the first flintlock gun, which is the predecessor to the rifle. Captain Patrick Ferguson of Pitfours, Scotland is known for inventing the first breech-loading rifle, which was used by the British Army in the American Revolutionary War in 1777.
    See Full Answer
    Filed Under:
  • How have microscopes changed over time?

    Q: How have microscopes changed over time?

    A: Since the 1st century when Romans experimented with magnifying small objects by looking at them through glass, the microscope has changed considerably with modern versions of the device capable of presenting three-dimensional images of objects at the sub-atomic level. The most notable advances in microscope technology occurred in the 19th century.
    See Full Answer
    Filed Under:
  • Who invented chalk?

    Q: Who invented chalk?

    A: Natural chalk is made up of prehistoric saltwater organisms high in calcium that formed rock-like sediment. There is no inventor. Chalk-based materials have been used in writing for centuries, with no known inventor.
    See Full Answer
    Filed Under:
  • Who invented the vinyl record?

    Q: Who invented the vinyl record?

    A: While records in other materials date back to the late 1800s, in 1931 RCA Victor became the first company to release a vinyl record. The technology was developed further by Columbia Records and led to the release of the 12-inch, long-play album in 1948.
    See Full Answer
    Filed Under:
  • When was the first school built?

    Q: When was the first school built?

    A: The first public school built in the United States was the Boston Latin School, completed in 1645, according to the Freedom Trail Foundation. The school was founded in 1635, and students attended classes in the home of the headmaster until the building was finished.
    See Full Answer
    Filed Under:
  • When was the first train invented?

    Q: When was the first train invented?

    A: The train was first invented and patented in 1784, by James Watt. The first working model to be made and successfully run was created in 1804 by Richard Trevithick.
    See Full Answer
    Filed Under:
  • Who invented the pacifier?

    Q: Who invented the pacifier?

    A: People have been using objects to soothe babies for centuries, but Christian W. Meinecke is credited with inventing the pacifier. In 1901 he filed a patent for "a new and original Design for a Baby Comforter."
    See Full Answer
    Filed Under:
  • What did Galileo Galilei invent?

    Q: What did Galileo Galilei invent?

    A: Galileo Galilei improved upon the technology of the spyglass, creating a more powerful version that resulted in the first telescope. He also created the first pendulum clock and provided important research that concluded that the planets revolve around the Sun.
    See Full Answer
    Filed Under:
  • Who invented the fluorescent lamp?

    Q: Who invented the fluorescent lamp?

    A: According to the U.S. Department of Energy, engineer and inventor Peter Cooper Hewitt created the first usable fluorescent lamp in the early 1900s. While earlier inventors and researchers experimented with fluorescence, Hewitt's design led to the first commercially successful form of fluorescent lighting.
    See Full Answer
    Filed Under:
  • Who invented the pencil and when?

    Q: Who invented the pencil and when?

    A: Pencils were invented in 1795 by a French scientist named Nicolas-Jacques Conte. He used a mixture of graphite, clay and water baked in a kiln to create the "lead" of the pencil. He then housed this mixture in a wooden frame for writing.
    See Full Answer
    Filed Under: