Who invented powerpoint presentation? Microsoft PowerPoint, virtual presentation software developed by Robert Gaskins and Dennis Austin for the American computer software company Forethought, Inc. The program, initially named Presenter, was released for the Apple Macintosh in 1987.
When was ice cream cones first invented? The most commonly accepted origin story states that the ice cream cone was invented at the 1904 World’s Fair (AKA the Louisiana Purchase Exposition. The story states Syrian immigrant Ernest Hamwi was making zalabia (a wafer dessert) next to an ice cream stand.
What was the ice cream cone invented for originally? In 1901, Antonio Valvona, an Italian citizen living in Manchester, England, filed a patent for an “Apparatus for Baking Biscuit Cups for Ice Cream.” The device was designed for baking “dough or paste…
What is the history of laser eye surgery? While laser eye surgery IS an ultra-modern procedure, its history actually starts many years ago with an early procedure called radial keratotomy. In the 1950s, Columbian Opthamologist Jose Barraquer developed the microkeratome and keratomileusis technique.
Who invented powerpoint presentation? – Related Questions
What food did denver invent?
A favorite candy to many, the Jolly Rancher was invented in 1949 by Golden resident Bill Harmsen. Many have claimed to have invented the cheeseburger, but we KNOW that it was invented by Louis Ballast of the Humpty Dumpty Drive-In in Denver.
When was birth control for women invented?
1960 The first oral contraceptive, Enovid, a mix of the hormones progesterone and estrogen, is approved by the U.S. Food and Drug Administration (FDA). It quickly became known simply as “the Pill.”
When first plane was invented?
Most people think about Orville and Wilbur Wright. And, December 17, 1903 is the day to remember. That was the day that Orville won the toss of the coin. He made the first successful powered flight in history!
When was the condenser microphone invented?
The condenser microphone, invented at Western Electric in 1916 by E. C. Wente, is also called a capacitor microphone or electrostatic microphone—capacitors were historically called condensers. Here, the diaphragm acts as one plate of a capacitor, and the vibrations produce changes in the distance between the plates.
Who invented the reading system for the blind?
LOUIS BRAILLE (1809–1852) was born in Coupvray, a town in north central France, on January 4, 1809. At the age of three, he accidentally blinded himself in one eye with a stitching awl taken from his father’s leather workshop.
When was time travel invented?
Time travel is a widely recognized concept in philosophy and fiction, particularly science fiction. The idea of a time machine was popularized by H. G. Wells’ 1895 novel The Time Machine.
What year were pickles invented?
Pickles have been around for thousands of years, dating as far back as 2030 BC when cucumbers from their native India were pickled in the Tigris Valley. The word “pickle” comes from the Dutch pekel or northern German pókel, meaning “salt” or “brine,” two very important components in the pickling process.
Why was the tooth fairy invented?
So, why does the tooth fairy leave money under the pillow? The idea of exchanging a tooth for coins originated in Scandinavia. Vikings paid children for a lost tooth. Teeth were worn on necklaces as good luck charms in battle.
Where was rock candy invented?
By then, India had already developed the first two kinds of candy. The original was simply a lump of sugar crystals, what we call rock candy. Almost certainly India is also the home of candying or glaceing, where seeds, nuts, dried fruits or even vegetables are boiled or dipped in sugar syrup.
When was the x ray invented?
W.C. Röntgen reported the discovery of X-rays in December 1895 after seven weeks of assiduous work during which he had studied the properties of this new type of radiation able to go through screens of notable thickness. He named them X-rays to underline the fact that their nature was unknown.
Who invented mercantilism?
Arguably the most influential proponent of mercantilism, French Controller General of Finance Jean-Baptiste Colbert (1619-1683) studied foreign-trade economic theories and was uniquely positioned to execute these ideas.
When was semi automatic pistols invented?
Semi-automatic firearms were introduced more than a century ago. The first semi-automatic rifle was introduced in 1885, the first semi-automatic pistol in 1892, and the first semi-automatic shotgun in 1902.
Where was pop tarts invented?
The original Pop-Tart flavors — strawberry, cinnamon sugar, blueberry, and apple currant first hit store shelves in Cleveland before being sold nationwide beginning in November of 1964.
What year were paper towels invented?
The idea for the paper towel originally came from brothers z in 1879. They had created a thinner version of the towel we know and love today. It was first created to be used for medical reasons, as a light toilet tissue.
Who invented carpet tack strips?
Tack strip was invented by Roy Roberts in 1939. This product revolutionized the power stretch method still used today for installing tufted carpet.
Who invented popcorn ceilings?
Who invented popcorn ceilings? – Quora. It’s proper name is Artex , devised by Artex uk around the mid thirties . In the late seventies it was very popular to have textured ceilings of stippled or swirled Finnish rather than a flat plastered one .
Why was scuba diving invented?
Jacques-Yves Cousteau. Jacques Cousteau and Emile Gagnan together invented the modern demand regulator used in underwater diving. … Cousteau was searching for an underwater breathing apparatus that would allow divers to enjoy unencumbered swimming.
Who invented zero first time?
The first recorded zero appeared in Mesopotamia around 3 B.C. The Mayans invented it independently circa 4 A.D. It was later devised in India in the mid-fifth century, spread to Cambodia near the end of the seventh century, and into China and the Islamic countries at the end of the eighth.
Who invented the tornado siren?
In the mid-1650s, New York firemen started carrying around small bells with them when they went to put out fires. They would ring those bells as they approached a fire to alert nearby residents of the danger. Then, in the year 1799, Scottish physicist John Robinson invented the first siren.
Why roundabouts were invented?
The first Roundabout was built in Letchworth Garden City in Great Britian in 1907 and it was originally intended as a traffic islands for pedestrians. Roundabouts made their way state side in the early 20th century and they were widespread through out Europe in the early 21st century.
When was bmi invented?
BMI was invented in the 1830s by a Belgian statistician, sociologist, astronomer and mathematician by the name of Lambert Adolphe Jacques Quetelet. It was known then as the Quetelet Index and was informed by Quetelet’s interest in finding “l’homme moyen,” or the average man.