The also remembered by the outcome it had on

The 1920s was a decade of change and growth. Many people at this time owned cars, radios, and telephones for the first time. The cars brought the need for good roads to travel on and the telephone kept families and friends in touch (Silverstein, 2004). Also many researches were started in the 1920s. This helped the creation of new technology in later years. Besides the growth in science and technology, the twenties is also remembered by the outcome it had on the culture through art, films, and literature (Sandhyarani, 2016). This culture was now being exported to the rest of the world . Overall the advances and new inventions helped the United States establish respect from the rest of the world (Silverstein, 2004).Early 1920s.  The Eskimo Pie ice cream was first produced by Christian Nelson in 1920. Sebastian Hinton invented the first jungle gym in the year 1920. In 1920, the first hair dryer was invented (Sandhyarani, 2016).America’s first Radio Station was KDKA who were issued with the first ever license on Oct. 27, 1920 (“Inventions”…, 2017). New hearing aids were developed with the help of vacums starting in 1920 with Earl Charles Hanson’s Vactuphone. Around 1920 the Reno and seeberger designs of the escalator were combined and the result was the modern escalator (McGrath, 1999). Headrests were invented by Benjamin Katz in 1921.  The lie detector was invented by John A. Larson in 1921 (Sandhyarani, 2016).  Ole Evinrude and Bessie formed the ELOT Outboard Motor Company in 1921. This new outboard engine was very successful. The first  freeway was opened in grunewald forest in Berlin, Germany in 1921 (McGrath, 1999). In 1922, Stephen J. Poplawski invented the blender, when he became the first to put a spinning blade at the bottom of a container ( Dyson, 2000). The convenient dressing with adhesive tape, also known as the Band-Aid was invented by Earle Dickson in 1921. The first drive thru restaurant was Kirby’s Pig Stand in 1921. The lie detector, like the modern polygraph system, reads reactions that helped to settle whether or not a person was lying, was invented by John A. Larson in 1921. Ben P. Ellerbeck created the first reasonable retractable hardtop convertible in 1922. Dr. Harvey Fletcher composed the first audiometer for evaluating hearing loss in 1922 (“Inventions”…, 2017). The 1923 Otophone was produced by the Marconi company, it was made of an amplifier placed in a large case. The popsicle accidentally came into being in 1923 when California lemonade manufacturer Frank Epperson Accidentally left a glass of his product with a spoon in it on a freezing New Jersey windowsill overnight. He named it the popsicle.  In 1923 Harold Stephen black invented a feedback feed-forward system that suppress but did not eliminate distortion (McGrath, 1999). After seeing two vehicles crash into each other Garrett Morgan created the traffic signal in 1923. The first self winding wrist watch was developed by John Harwood in 1923. Americans James Cummings and J. Earl McLeod both envisioned and built the first bulldozer in 1923. The earliest instant camera, with self-developing film, was invented in 1923 by Samuel Shlafrock (“Inventions”…, 2017). In 1923, Vladimir Zworykin develops the iconoscope, an electric television camera (Aaseng, 1992). In 1923 in the US, charles Jenkins made a public demonstration of a television system (Newhouse, 1988).Mid 1920s. In 1924 the Federal Road Act offered federal money to state legislatures. which would organize highway departments and match federal funds (“”…, 2017). Hans Berger made the first human eeg in 1924. In 1924 Edwin Howard Armstrong invented the way to modulate the frequency of the wavelength, rather than the amplitude. Birdseye perfected his process during the 1920s and began producing family size units of quick Frozen Foods in 1924 (McGrath, 1999). Chester Rice and Edward Kellogg both invented the loudspeaker system in 1924. Designed by Morris Titterington in 1924, the earth inductor compass provided pilots with a more reliable reference device. The Moviola, invented in 1924 by Iwan Serrurier, provided the means for a movie editor to view film while editing. In 1924, American engineer Lloyd Espenschied created the radio altimeter, it measured the altitude above the terrain beneath an aircraft (“Inventions”…, 2017). It wasn’t until 1924 that the first locking pliers with a locking handle that Petersen called the Vise-Grip was patented.  In 1925, Harold Alden Wheeler invented the automatic volume control which remains today, a standard feature of AM radio (Timeline, 2017). In 1925 electronic recording was developed, and the first microphones were introduced. Multi-coin prepayment telephone boxes first appeared in 1925 (McGrath, 1999). Television was invented in 1925, by John Logie Baird, the first experimental Television broadcast in the US. was in 1928 (“Inventions”…, 2017). In 1925, Hans Wilsdorf purchased a Swiss patent for a waterproof winding button, and a year later the first successful waterproof watch, the Rolex Oyster, was born ( Dyson, 2000). In 1926, the electric garage door opener was composed by C.G. Johnson (“Inventions”…, 2017). Poly Adhesives were introduced in 1926. Aniline dyes, developed in 1926, extended the range of color printing allowing application to Plastics, Fabric, and other substances. The aerosol spray can, used for many years to apply deodorant to paint to insecticides, dates back to 1926 (McGrath, 1999). Robert Goddard was able to ignite a lightweight rocket motor so that it flew off the ground for 24 seconds on christmas day 1925. March 16, 1926 Robert Goddard launches first successful rocket at farm near auburn, massachusetts (Aaseng, 1992). American engineer and physicist Robert Goddard designed the first liquid fueled rocket in 1926 that arised as an important breakthrough toward spaceflight (“Inventions”…, 2017).Late 1920s. The first successful small motorized ski sled was developed in 1927. In 1927, a mechanic from stillwater, Minnesota invented a toaster that could heat both sides of bread. In 1927 American physicist Albert Wallace Hull invented the tetrode to eliminate high frequency oscillations and improve the frequency range. Reppe discovered vinyl ethers in 1927. In the late 1920’s Ernst Ruska designed a magnetic coil that acted as an electron lens, with that information they were able to construct the first electron microscope (McGrath, 1999). In 1927 Ryan Airlines and a lanky barnstormer, charles Lindbergh, teamed up to build a plane designed for a single flight called Vega. The Vega was a high-wing monoplane built partly of plywood with an enclosed cabin and extraordinarily clean lines First flown in 1927 (Newhouse, 1988). The first automatic commercial bread slicing machine was created by American inventor and engineer Otto Frederick Rohwedder in 1927. The first jukebox was introduced to the world in 1927 by the Automated Musical Instrument Company. The electrical television system with the dissector tube was invented by Philo Fransworth in 1927. The electrical garbage disposal that shredded food into small pieces to be disposed by the plumbing system, was developed in 1927 by John W. Hammes. American Frank Ofeldt came up with the steam pressure washer to clean buildings, automobiles, and concrete surfaces in 1927 (“Inventions”…, 2017). The recliner invented by Edward Knabusch and Edwin Shoemaker was first experienced by people in 1928 (Sandhyarani, 2016).  In 1928 the germans constructed the most luxurious airship, the Graf Zeppelin. The graf Zeppelin became the first aircraft to fly over 1,000,000miles and carried 13,000 passengers. In 1928 Buckminster Bueller designed his dymaxion car, an omnidirectional vehicle that gave minimum resistance to the wind. This vehicle could see 12 passengers, run out 120 MI per gallon make 180 degree turns, and average 28 miles per gallon. Technicolor improved the process in 1928 making it possible to combine all the primary colors to produce the lifelike tones. In 1928 the petrode, which improved performance at low voltage, was developed and became the most commonly used valve (McGrath, 1999). Alexander Fleming discovered penicillin in 1928 and it changed the world of medicines because it started the age of antibiotics (????? source 9). In 1928 Jacob Schick invented the electric razor that did not require the  use of water or shaving cream  (“Inventions”…, 2017).  The clip-on tie was reportedly invented on December 13, 1928. Double bubble Bubblegum, a type of chewing gum especially designed for blowing bubbles, was invented by Walter E. Diemer in 1928 (Timeline, 2017). In 1928 Farnsworth demonstrated the world’s first all-electronic television system (Newhouse, 1988). In 1928 Mickey Mouse first appeared in the cartoon Steamboat Willie. In 1929, Popeye first appeared in the comic strip Thimble Theater (Silverstein, 2004). Sunglasses were designed by Sam Foster in 1929. American inventor and entrepreneur Clarence Birdseye cooked-up the idea for quick-frozen foods in 1929 (“Inventions”…, 2017). 1929, Vladimir Zworykin develops the kinescope, an electric television picture receiver (Aaseng, 1992). Magnetic recording was originally introduced in the form of audiotape in 1929 by fritz Pfleumer. The synchromesh gearbox was introduced by general motors in 1929. The most famous of all the electrostatic devices is the van de Graff generator. Invented in 1929 by Robert J. van de Graff. In 1929 the ELOT company merged with the Evinrude company and the Lockwood Motor Company. In 1929 the iron lung, which is a mechanical respiratory device that helps people breath, was invented by Philip drinker. It was not until 1929 that the current sized bills went into circulation. The French glassmaking firm St. Gobain developed toughened glass for car windshields in 1929 (McGrath, 1999). The 1920s really was a time of inventions and technological advancement. The number of inventions created in the twenties was a testimony to the effort of scientists and inventors in that era. Besides creating new products, inventors also put in consistent efforts to better the existing technology (Sandhyarani, 2016). Because of all these new advancements, discoveries, and inventions the 1920s is often referred to as the Roaring Twenties (????? source 9).