PaperPaper History of paper began in

ancient Egypt 3700-3200 BC “Paper” derives from

“papyrus” ,what Egyptians write on

Modern paper invented in China by Cai Lun in 2nd century

Entered production in Europe in 13th century

Had many uses: money, cheque, books, envelopes……

Light BulbLight BulbHumphry Davy made a

incandescent light with a strip of platinum 1802 (didn’t work well)

Warren De la Ru enclosed platinum filament in a vacuum tube (platinum too expensive)

Thomas Edison made first successful light bulb 1880 (bright enough & lasts long)

William Coolidge developed first tungsten filament later (what we use today)

Helped us to read & write at night

TelephoneTelephoneInnocenzo Manzetti, Antonio

Meucci, Thomas Edison, Alexander Bell all been credited with pioneering work on the telephone

Alexander Bell made first successful electric telephone

Tivadar Puskás invented telephone switchboard 1876

6million telephone subscribers by end of 2009

Made it easier to communicate with friends far away

AutomobileAutomobileGottlieb Daimler, Wilhelm

Maybech, Siegfried Marcus, Karl Benz all worked on the automobile

Karl Benz acknowledged as the inventor of automobile

Benz made first engine 1879Benz’s company was

founded 1883; began to sell vehicles 1888

Made travelling a lot easier

ComputerComputerThe first working “computer” =

Manchester Small-Scale Experimental Machine (SSEM) (made 1948)

EDSAC （ Electronic Delay Storage Automatic Calculator)= first non-experimental “computer”(1949)

Computers use vacuum tubes as processers in 1950s, use transistors in 1960s, and microprocessors such as Intel 4004 in 1970s

Modern processors are smaller, cheaper and work faster

Made it a lot easier to write articles, calculate, listen to music, watch movies, chat with others…….

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