Week 3, Checkpoint, Sequential and Selection Process Control Structure Essay Example for Free

Week 3, Checkpoint, Sequential and Selection Process Control Structure Essay Week 3, Checkpoint, Sequential and Selection Process Control Structure Payroll tax Calculation System Requirements -Salary Range 1 is 0.00 -1,499.99 -Salary Range 2 is 1,500.00-2,999.99 -Salary Range 3 is 3,000.00-4,999.99 -Salary Range 4 is 5,000.00-7,999.99 -Salary Range 5 is 8,000.00-14,999.99 -If the Salary Range is greater than 0.00, then the tax base is 0.00 plus 15% of the amount over 0.00 (amount-0.00*15%+0.00) -If the Salary Range is greater than 1,500.00, then the tax base is $225.00 plus 16% of the amount in excess of 1,500.00 (amount -1,500.00*16%+225.00) -If the Salary Range is greater than 3,000.00, then the tax base is 5. 00 plus 18% of the amount in excess of 3,000.00 (amount-3,000.00*18%+465.00) -If the Salary Range is greater than 5,000.00, then the tax base is $825.00 plus 20% of the amount in excess of 5,000.00 (amount-5,000.00*20%+825.00) -If the Salary Range is greater than 8,000.00, then the tax base is $1425.00 plus 25% of the amount in excess of 8,000.00 (amount-8,000.00*25%+1425.00) Input-Process-Output Chart Input Process Output (keyboard) Get the amount of salary earned GrossSalary (integer) Salary (integer) Calculate the total tax and adjusted net salary GrossSalary (integer) BaseTax (float) AddlTax (float) TotalTax (float) NetSalary (float) GrossSalary (integer) BaseTax (float) AddlTax (float) TotalTax (float) NetSalary (float) Display the Gross Salary, Base Tax, Additional Tax and Adjusted Net Salary (output to screen) FLOWCHARTs Main Module Calculate Net Salary Module DisplayGrossSalaryBaseTaxAdditionalTaxNetSalary Module PSEUDOCODE Main Module Declare GrossSalary as Integer Declare BaseTax as Float Declare BaseSalary as Float Declare AddlTax as Float Declare TotalTax as Float Declare NetSalary as Float Print â€Å"Enter the amount of the Gross Salary earned† Input GrossSalary Call CalculateNetSalary Module Call DisplayGrossSalaryBaseTaxAdditionalTaxNetSalary Module End Main Module CalculateNetSalary Module NetSalary = GrossSalary – BaseTax – (GrossSalary – BaseSalary * AddlTax) If GrossSalary 0.00 1,500.00 Then BaseTax = 0.00 BaseSalary = 0.00 AddlTax = (Gross Salary – BaseSalary) * 0.15 End if If GrossSalary 1,500.00 3,000.00 Then BaseTax = 225.00 BaseSalary = 1,500.00 AddlTax = (Gross Salary – BaseSalary) * 0.16 End if If GrossSalary 3,000.00 5,000.00 Then BaseTax = 465.00 BaseSalary = 3,000.00 AddlTax = (Gross Salary – BaseSalary) * 0.18 End if If GrossSalary 5,000.00 8,000.00 Then BaseTax = 825.00 BaseSalary = 5,000.00 AddlTax = (Gross Salary – BaseSalary) * 0.20 End if If GrossSalary 8,000.00 15,000.00 Then BaseTax = 1,425.00 BaseSalary = 8,000.00 AddlTax = (Gross Salary – BaseSalary) * 0.25 End if If GrossSalary 15,000.00 Then BaseTax = 1,425.00 BaseSalary = 8,000.00 AddlTax = (Gross Salary – BaseSalary) * 0..25 End if GrossSalary – BaseTax – (GrossSalary – BaseSalary * AddlTax) End CaclulateNetSalary Module DisplayGrossSalaryBaseTaxAddlTaxNetSalary Module Print â€Å"Employee Gross Pay, Tax and Net Pay Breakdown† Print â€Å"Gross Salary† GrossSalary Print â€Å"Base Tax† BaseTax Print â€Å"Additional Tax† AddlTax Print â€Å"Net Salary† * NetSalary End DisplayGrossSalaryBaseTaxAddlTaxNetSalary Module Test Values Input Expected Output Comments Salary = 0.00 Tax = 0.00 Lowest salary in salary range 1 Salary = -1,000.00 Error Message Out of range condition Salary = 1,000.00 Tax = 150.00 Midrange salary in salary range 1 Salary= 1,499.99 Tax = 225.00 Highest salary in salary range 1 Salary = 1,500.00 Tax = 225.00 Lowest salary in salary range 2 Salary = 2,250.00 Tax = 345.00 Midrange salary in salary range 2 Salary = 2,999.99 Tax = 465.00 Highest salary in salary range 2 Salary = 3,000.00 Tax = 465.00 Lowest salary in salary range 3 Salary = 4,000.00 Tax = 645.00 Midrange salary in salary range 3 Salary = 4,999.99 Tax = 825.00 Highest salary in salary range 3 Salary = 5,000.00 Tax = 825.00 Lowest salary in salary range 4 Salary = 6,500.00 Tax = 1,095.00 Midrange salary in salary range 4 Salary = 7,999.99 Tax = 1,425.00 Highest salary in salary range 4 Salary = 8,000.00 Tax = 1,425.00 Lowest salary in salary range 5 Salary = 11,500.00 Tax = 2,300.00 Midrange salary in salary range 5 Salary = 14,999.99 Tax = 3,175.00 Highest salary in salary range 5 Salary = 15,000.00 Tax = 3,175.00 Salary that exceeds the highest salary in salary range 5 by 0.01 Salary = 100,000.00 Tax = 24,425.00 Salary that exceeds the highest salary in salary range 5

Solving Problem Creatively Over The Net :: essays research papers

Solving Problem Creatively Over the Net Since I got my internet privileges last 3 month, I had learn and encounter many weird and wonderful things. I have met the ugly side of internet and learnt something called "if you overspend your time limit, the phone bill gonna be very ugly."Perhaps the most interesting moment I encounter in the internet is when I discover homepage making. I made a homepage from learning HTML language from a web site. I want my homepage to be bold and simple but most of all animation- free. As a surfer myself, I know how it feels when entering a homepage that is full with high resolution graphic and animation. The animation had to be reload and reload again. Within 2 hours I managed to made myself a homepage.I also know to make an impressive homepage,one must have a high counter number so that people will revisit the homepage again. I can't use any "sensual" word to attract people cause it's against Geocities's rule. So I did a very nasty thing. I cheated, I put an extra counter number in my homepage beside my origi nal counter number so each time when it reload it will look like this---->0101.While the only people who visited my homepage was myself, but instead the counter number show 101. MIRC The Solution When my PC suffered a data crash, I lost all my data. I lost all my e-mail address and most importantly my browser.The computer technician managed to repair my PC but he gave me an old version of Netscape.I have trouble using it in Win'95.So I downloaded the later version of Netscape.The downloading seize when it reaches 52%. I had to reload if I were to use Netscape.Instead I used MIRC to download the program because MIRC come with this neat feature that allow me to resume downloading where I left out. As a result, I get to continue my downloading at 17564 byte from a friend. I'm The Biggest Leech The rule of warez is-to download you must upload. The warez people even wrote a scipt to ban people who didn't upload when they download. To upload any program of mine to anyone will take forever, all the file I have is at least 6

An analysis of the Maya Angelou poem “To a man” Essay

‘To a man’ is written by Maya Angelou, whose first novel was an autobiography of her varied life, (activist, singer, waitress, dancer etc.) called ‘I know why the caged bird sings’. She has written two collections of prose, ‘Wouldn’t take nothing for my journey now’ and ‘Even the stars look lonesome’. Angelou has written several famous poems, including ‘Still I rise’ and ‘On the pulse of the morning’ for the inaugeration of President Clinton. Maya Angelou now has a lifetime appointment as Professor of American Studies at Wake Forest University of North Carolina. The poem is about the man that Maya Angelou loves, and she uses a variety of metaphors and images to describe him to the reader. Maya Angelou has a very decisive style of writing and uses lots of modal verbs such as ‘is’ to convey her message to the reader. She writes poems to entertain people, and to be read aloud. I think this one is one of those poems because she uses full stops and capital letters to show when pauses should be given and which words need particular emphasis. This poem is serious, and thought provoking, and she uses unusual imagery to compare her man to. I like the style she uses to give meaning to her words, and how she uses punctuation and enjambement together which gives an interesting effect. The mood is quite happy, as she describes her man, who makes her feel warm and laughs through his own troubles. The poem does not follow conventional structure, or use syllabic sentencing on each line. The lines do not rhyme, and it is like Angelou has just written down her thoughts, without purposefully making them into a piece of poetry. The poem is twenty two lines long, and puts important ideas about the man on their own , or on a separate line to show the reader how important this aspect of the man is. ‘To a man’ is written from Maya Angelou’s own experience, and was about her first husband. It describes his personality, and likens him to a big cat. Angelou uses metaphors such as ‘My man is Black Golden Amber’ to begin the poem. The first line ‘My man is’ sets the scene and tells the reader that the poem is about the man Angelou loves. The word ‘My’, indicates possessiveness, unlike the title which is ‘to a man’, this could be any man. It is unsure why she writes to any man, not her own, but possibly it is to tell the m how great her man is and that she doesn’t need anyone else. The word ‘Black’ could be in reference to the skin colour of the man, or his personality, which could be evil, or depressed. I think it means ‘evil’ because of the later imagery used in the poem. ‘Golden’ implies that he is special, and precious as gold, as does the next word ‘Amber’ which is also a precious stone. The word ‘Amber’ gives the idea of warm colours, reds and oranges, which link in to the rest of the poem. The next line is simply, ‘Changing’ which means her man is constantly changing from Black to Golden to Amber, his personalities change. ‘Warm mouths of Brandy Fine’ I think this means that kissing him is like drinking brandy, and makes her warm which ties in with the warm amber colours used earlier. ‘Cautious sunlight on a patterned rug’ means that maybe her man is cautious sunlight, which links to the imagery of golden. Possibly Angelou thinks of herself as the rug, and he cautiously lights her up, and makes her warm again. The next line indicates that the man smiles through his troubles, ‘coughing laughter’ and that he has a particular smell, of ‘French tobacco’. ‘Graceful turns on woollen stilts’ shows that her man can not only walk on stilts made of wool, i.e.) do the impossible but also, turn on them gracefully, and make the impossibilities of life seem easy to her. The following line is simply ‘ Secretive?’, Angelou is asking herself a question about the man, is he secretive?, and then answers in the next line, ‘A cat’s eye’. I think that this indicates that he has depths and mystery like the cat’s eyes which swirl with hidden colours. He is not secretive, just has many layers that cannot be unravelled all at once. Cat’s eyes are golden and change colour with the light, which links in to the idea of the man’s temperament, also ever changing. ‘Southern’ is in it’s own sentence at the beginning of the next line which could show that her man is from the South , possibly American, like Angelou herself. The next sentence says he is ‘plump and tender, with navy-bean sullenness’, navy is traditionally a very masculine colour which could mean he is a very macho man. The next line re emphasises how tender the man is, it says simply , ‘The gentleness’. The fact that Angelou doesn’t use a lot of words to describe the gentleness suggests to me how gentle he is, she cannot use words to describe it, it is just there, which is in direct contrast from the sullen man who likes navy blue. This again gives the impression of an ever changing personality. The next line mentions a cat again, ‘A big cat stalks through stubborn bush’. This imagery has an air of menace about it, the cat using it’s gentleness to stalk, capture and kill it’s prey, a cat is graceful, and light but also can be deadly. This adds an air of danger to the man, is he as sweet as he first appears?. Angelou now asks if she mentioned amber, which links back to the start of the poem, and gives the reader the red, gold imagery again, and an idea of the warmth Angelou feels with her man. She likens amber to a ‘heatless fire, consuming itself’, which (as in other Maya Angelou) poetry gives the image of a cycle, forever consuming itself. Possibly the heatless fire is what she sees in her man’s eyes. The next line says ‘Again.Anew. Into ever neverlessness’ which shows the cycle again, and also could portray the image of a cat’s eye and the way the colours in that change. ‘My man is Amber’, this is a repetition of the first phrase, Angelou uses a definite metaphor to compare her man to Amer. She then repeats her third line, ‘Changing’, which again shows the way his colours change like Amber. The next line is ‘Always into itself’ , whi ch could be acting as a metaphor for their love, which also changes but remains the same. This is further shown in the last lines, ‘New.Now.New’ and ‘Still itself’. The poem ends with the word ‘Still† on a line o it’s own, with a full stop, this shows that their love is still, and the way he feels for her, unlike the colours doesn’t swirl and changed and is still. I think that Maya Angelou wrote the poem to describe the way her husband made her feel, and to keep a part of that feeling with her, for posterity. She writes to any man to let them know what she has, and to convey her deep love for this particular man. Another reason for her to write the poem is to try to make sense of the way her man acts, and the way his moods change. I think that Maya Angelou wrote this to show the complex emotions she feels about her man, possession, tenderness, love, and warmth all at once. The poem’s effect on me was that it showed me the way a woman felt about her man, and it helped me understand the deeper emotions of a relationship. I liked the way she used Amber to show how her man changed, because it wasn’t in a negative way, the Amber gave an impression of how precious he was, yet she changed her perspective with him. ‘To a man’ made me think about the images and metaphors used, and I enjoyed analysing it because now, I enjoy it more, knowing how Angelou felt when she wrote it.

Biography of Nikola Tesla, Serbian-American Inventor

Nikola Tesla (July 10, 1856–January 7, 1943) was a Serbian-American inventor, electrical engineer, and futurist. As the holder of nearly 300 patents, Tesla is best known for his role in developing the modern three-phase alternating current (AC) electric power supply system and for his invention of the Tesla coil, an early advancement in the field of radio transmission. During the 1880s, Tesla and Thomas Edison, inventor and champion of direct electrical current (DC), would become embattled in the â€Å"War of the Currents† over whether Tesla’s AC or Edison’s DC would become the standard current used in long-distance transmission of electrical power. Fast Facts: Nikola Tesla Known For: Development of alternating current (AC) electrical powerBorn: July 10, 1856 in Smiljan, Austrian Empire (modern-day Croatia)Parents: Milutin Tesla and Ä uka TeslaDied: January 7, 1943 in New York City, New YorkEducation: Austrian Polytechnic Institute in Graz, Austria (1875)Patents: US381968A—Electro-magnetic motor, US512,340A—coil for electro-magnetsAwards and Honors: Edison Medal (1917), Inventor’s Hall of Fame (1975)Notable Quote: â€Å"If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.† Early Life and Education Nikola Tesla was born on July 10, 1856, in the village of Smiljan in the Austrian Empire (now Croatia) to his Serbian father Milutin Tesla, an Eastern Orthodox priest, and his mother Ä uka Tesla, who invented small household appliances and had the ability to memorize lengthy Serbian epic poems. Tesla credited his mother for his own interest in inventing and photographic memory. He had four siblings, a brother Dane, and sisters Angelina, Milka, and Marica.   In 1870, Tesla started high school at the Higher Real Gymnasium in Karlovac, Austria. He recalled that his physics teacher’s demonstrations of electricity made him want â€Å"to know more of this wonderful force.† Able to integral calculus in his head, Tesla completed high school in just three years, graduating in 1873. Determined to pursue a career in engineering, Tesla enrolled at the Austrian Polytechnic Institute in Graz, Austria, in 1875. It was here that Tesla studied a Gramme dynamo, an electrical generator that produces direct current. Observing that the dynamo functioned like an electric motor when the direction of its current was reversed, Tesla began thinking of ways this alternating current could be used in industrial applications. Though he never graduated—as was not uncommon then—Tesla posted excellent grades and was even given a letter from the dean of the technical faculty addressed to his father stating, â€Å"Your son is a star of first rank.† Feeling that chastity would help him focus on his career, Tesla never married or had any known romantic relationships. In her 2001 book, â€Å"Tesla: Man Out of Time,† biographer Margaret Cheney writes that Tesla felt himself to be unworthy of women, considering them to be superior to him in every way. Later in life, however, he publicly expressed strong dislike what he called the â€Å"new woman,† women he felt were abandoning their femininity in an attempt to dominate men. The Path to Alternating Current In 1881, Tesla moved to Budapest, Hungary, where he gained practical experience as the chief electrician at the Central Telephone Exchange. In 1882, Tesla was hired by the Continental Edison Company in Paris where he worked in the emerging industry of installing the direct current-powered indoor incandescent lighting system patented by Thomas Edison in 1879. Impressed by Tesla’s mastery of engineering and physics, the company’s management soon had him designing improved versions of generating dynamos and motors and fixing problems at other Edison facilities throughout France and Germany. When the manager of the Continental Edison facility in Paris was transferred back to the United States in 1884, he asked that Tesla be brought to the U.S. as well. In June 1884, Tesla emigrated to the United States and went to work at the Edison Machine Works in New York City, where Edison’s DC-based electrical lighting system was fast becoming the standard. Just six months later, Tesla quit Edison after a heated dispute over unpaid wages and bonuses. In his diary, Notebook from the Edison Machine Works: 1884-1885, Tesla marked the end of the amicable relationship between the two great inventors. Across two pages, Tesla wrote in large letters, â€Å"Good By to the Edison Machine Works.† By March 1885, Tesla, with the financial backing of businessmen Robert Lane and Benjamin Vail, started his own lighting utility company, Tesla Electric Light Manufacturing. Instead of Edison’s incandescent lamp bulbs, Tesla’s company installed a DC-powered arc lighting system he had designed while working at Edison Machine Works. While Tesla’s arc light system was praised for its advanced features, his investors, Lane and Vail, had little interest in his ideas for perfecting and harnessing alternating current. In 1886, they abandoned Tesla’s company to start their own company. The move left Tesla penniless, forcing him to survive by taking electrical repair jobs and digging ditches for $2.00 per day. Of this period of hardship, Tesla would later recall, â€Å"My high education in various branches of science, mechanics, and literature seemed to me like a mockery.† During his time of near destitution, Tesla’s resolve to prove the superiority of alternating current over Edison’s direct current grew even stronger. Alternating Current and the Induction Motor In April 1887, Tesla, along with his investors, Western Union telegraph superintendent Alfred S. Brown and attorney Charles F. Peck, founded the Tesla Electric Company in New York City for the purpose of developing new types of electric motors and generators. Tesla soon developed a new type of electromagnetic induction motor that ran on alternating current. Patented in May 1888, Tesla’s motor proved to be simple, dependable, and not subject to the constant need for repairs that plagued direct current-driven motors at the time. Patent drawing of Nikola Tesla’s alternating current electric motor. Tesla AC Motor / Wikimedia Commons / Public Domain In July 1888, Tesla sold his patent for AC-powered motors to Westinghouse Electric Corporation, owned by electrical industry pioneer George Westinghouse. In the deal, which proved financially lucrative for Tesla, Westinghouse Electric got the rights to market Tesla’s AC motor and agreed to hire Tesla as a consultant. With Westinghouse now backing AC and Edison backing DC, the stage was set for what would become known as â€Å"The War of the Currents.† The War of the Currents: Tesla vs. Edison Recognizing the economic and technical superiority of alternating current to his direct current for long-distance power distribution, Edison undertook an unprecedently aggressive public relations campaign to discredit AC as posing a deadly threat to the public—a force should never allow in their homes. Edison and his associates toured the U.S. presenting grizzly public demonstrations of animals being electrocuted with AC electricity. When New York State sought a faster, â€Å"more humane† alternative to hanging for executing condemned prisoners, Edison, though once a vocal opponent of capital punishment, recommended using AC-powered electrocution. In 1890, murderer William Kemmler became the first person to be executed in a Westinghouse AC generator-powered electric chair that had been secretly designed by one of Edison’s salesmen. Despite his best efforts, Edison failed to discredit alternating current. In 1892, Westinghouse and Edison’s new company General Electric, competed head-to-head for the contract to supply electricity to the 1893 World’s Fair in Chicago. When Westinghouse ultimately won the contract, the fair served as a dazzling public display of Tesla’s AC system. On the tails of their success at the World’s Fair, Tesla and Westinghouse won a historic contract to build the generators for a new hydroelectric power plant at Niagara Falls. In 1896, the power plant began delivering AC electricity to Buffalo, New York, 26 miles away. In his speech at the opening ceremony of the power plant, Tesla said of the accomplishment, â€Å"It signifies the subjugation of natural forces to the service of man, the discontinuance of barbarous methods, the relieving of millions from want and suffering.† The success of the Niagara Falls power plant firmly established Tesla’s AC as the standard for the electric power industry, effectively ending the War of the Currents. The Tesla Coil In 1891, Tesla patented the Tesla coil, an electrical transformer circuit capable of producing high-voltage, low-current AC electricity. Though best-known today for its use in spectacular, lightening-spitting demonstrations of electricity, the Tesla coil was fundamental to the development of wireless communications. Still used in modern radio technology, the Tesla coil inductor was an essential part of many early radio transmission antennas. Nikola Tesla demonstrates his Tesla coil â€Å"Magnifying Transmitter†. Corbis Historical / Getty Images Tesla would go on to use his Tesla coil in experiments with radio remote control, fluorescent lighting, x-rays, electromagnetism, and universal wireless power transmission.   On July 30, 1891, the same year he patented his coil, the 35-year-old Tesla was sworn in as a naturalized United States citizen. Radio Remote Control At the 1898 Electrical Exposition in Boston’s Madison Square Gardens, Tesla demonstrated an invention he called a â€Å"telautomaton,† a three-foot-long, radio-controlled boat propelled by a small battery-powered motor and rudder. Members of the amazed crowd accused Tesla of using telepathy, a trained monkey, or pure magic to steer the boat. Finding little consumer interest in radio-controlled devices, Tesla tried unsuccessfully to sell his â€Å"Teleautomatics† idea to the US Navy as a type of radio-controlled torpedo. However, during and after World War I (1914-1918), the militaries of many countries, including the United States incorporated it. Wireless Power Transmission From 1901 through 1906, Tesla spent most of his time and savings working on arguably his most ambitious, if a far-fetched, project—an electrical transmission system he believed could provide free energy and communications throughout the world without the need for wires.   In 1901, with the backing of investors headed by financial giant J. P. Morgan, Tesla began building a power plant and massive power transmission tower at his Wardenclyffe laboratory on Long Island, New York. Seizing on the then commonly-held belief that the Earth’s atmosphere conducted electricity, Tesla envisioned a globe-spanning network of power transmitting and receiving antennas suspended by balloons 30,000 feet (9,100 m) in the air.   Nikola Teslas Wardenclyffe wireless electricity transmitting tower. Dickenson V. Alley  / Wikimedia Commons / Public Domain However, as Tesla’s project drug on, its sheer enormity caused his investors to doubt its plausibility and withdraw their support. With his rival, Guglielmo Marconi—enjoying the substantial financial support of steel magnate Andrew Carnegie and Thomas Edison—was making great advances in his own radio transmission developments, Tesla was forced to abandon his wireless power project in 1906. Later Life and Death In 1922, Tesla, deeply in debt from his failed wireless power project, was forced to leave the Waldorf Astoria hotel in New York City where he had been living since 1900, and move into the more-affordable St. Regis Hotel. While living at the St. Regis, Tesla took to feeding pigeons on the windowsill of his room, often bringing weak or injured birds into his room to nurse them back to health. Of his love for one particular injured pigeon, Tesla would write, â€Å"I have been feeding pigeons, thousands of them for years. But there was one, a beautiful bird, pure white with light grey tips on its wings; that one was different. It was a female. I had only to wish and call her and she would come flying to me. I loved that pigeon as a man loves a woman, and she loved me. As long as I had her, there was a purpose to my life.† By late 1923, the St. Regis evicted Tesla because of unpaid bills and complaints about the smell from keeping pigeons in his room. For the next decade, he would live in a series of hotels, leaving behind unpaid bills at each. Finally, in 1934, his former employer, Westinghouse Electric Company, began paying Tesla $125 per month as a â€Å"consulting fee,† as well as paying his rent at the Hotel New Yorker. In 1937, at age 81, Tesla was knocked to the ground by a taxicab while crossing a street a few blocks from the New Yorker. Though he suffered a severely wrenched back and broken ribs, Tesla characteristically refused extended medical attention. While he survived the incident, the full extent of his injuries, from which he never fully recovered, was never known. On January 7, 1943, Tesla died alone in his room at the New Yorker Hotel at the age of 86. The medical examiner listed the cause of death as coronary thrombosis, a heart attack. On January 10, 1943, New York City mayor Fiorello La Guardia delivered a eulogy to Tesla broadcast live over WNYC radio. On January 12, over 2,000 people attended Tesla’s funeral at the Cathedral of Saint John the Divine. Following the funeral, Tesla’s body was cremated at Ferncliff Cemetery in Ardsley, New York. With the United States then fully engaged in World War II., fears that the Austrian-born inventor might have been in possession of devices or designs helpful to Nazi Germany, drove the Federal Bureau of Investigation to seize Tesla’s possessions after his death. However, the FBI reported finding nothing of interest, concluding that since about 1928, Tesla’s work had been â€Å"primarily of a speculative, philosophical, and somewhat promotional character often concerned with the production and wireless transmission of power; but did not include new, sound, workable principles or methods for realizing such results.† In his 1944 book, Prodigal Genius: The Life of Nikola Tesla, journalist, and historian John Joseph O’Neill wrote that Tesla claimed to have never slept more than two hours per night, â€Å"dozing† during the day instead to â€Å"recharge his batteries.† He was reported to have once spent 84 straight hours without sleep working in his laboratory. Legacy It is believed that Tesla was granted around 300 patents worldwide for his inventions during his lifetime. While several of his patents remain unaccounted for or archived, he holds at least 278 known patents in 26 countries, mostly in the United States, Britain, and Canada. Tesla never attempted to patent many of his other inventions and ideas. Today, Tesla’s legacy can be seen in multiple forms of popular culture, including movies, TV, video games and several genres of science fiction. For example, in the 2006 movie The Prestige, David Bowie portrays Tesla developing an amazing electro-replicating device for a magician. In Disney’s 2015 film Tomorrowland: A World Beyond, Tesla helps Thomas Edison, Gustave Eiffel, and Jules Verne discover a better future in an alternate dimension. And in the 2019 film The Current War, Tesla, played by Nicholas Hoult, squares off with Thomas Edison, played by Benedict Cumberbatch, in a history-based depiction of the war of the currents. In 1917, Tesla was awarded the Edison Medal, the most coveted electrical prize in the United States, and in 1975, Tesla was inducted into the Inventor’s Hall of Fame. In 1983, the United States Postal Service issued a commemorative stamp honoring Tesla. Most recently, in 2003, a group of investors headed by engineer and futurist Elon Musk founded Tesla Motors, a company dedicated to producing the first car fittingly powered totally by Tesla’s obsession—electricity. Sources Carlson, W. Bernard. â€Å"Tesla: Inventor of the Electrical Age.† Princeton University Press, 2015.Cheney, Margaret. â€Å"Tesla: Man Out of Time.† Simon Schuster, 2001.ONeill, John J. (1944). â€Å"Prodigal Genius: The Life of Nikola Tesla.† Cosimo Classics, 2006.Gunderman, Richard. â€Å"The Extraordinary Life of Nikola Tesla.† Smithsonian.com, January 5, 2018, https://www.smithsonianmag.com/innovation/extraordinary-life-nikola-tesla-180967758/.Tesla, Nikola. â€Å"Notebook from the Edison Machine Works: 1884-1885.† Tesla Universe, https://teslauniverse.com/nikola-tesla/books/nikola-tesla-notebook-edison-machine-works-1884-1885.â€Å"The War of the Currents: AC vs. DC Power.† U.S. Department of Energy, https://www.energy.gov/articles/war-currents-ac-vs-dc-power.Cheney, Margaret. â€Å"Tesla: Master of Lightning.† MetroBooks, 2001.Dickerson, Kelly.â€Å"Wireless Electricity? How the Tesla Coil Works.† LiveScience, July 10, 20 14, https://www.livescience.com/46745-how-tesla-coil-works.html.â€Å"About Nikola Tesla.† Tesla Society, https://web.archive.org/web/20120525133151/http:/www.teslasociety.org/about.html.O’Neill, John J. â€Å"Prodigal Genius: The Life of Nikola Tesla.† Cosimo Classics, 2006.