Page 43 - A2 Project

I n v e n t o r s & I n v e n t i o n s

b.
Match Light bulbs, for instance are
1 White Out everywhere in houses and offices.
2 Inventors-Inventions Thomas Alva Edison worked for
3 the light bulb many years with electricity to
4 the radio improve the quality of the light
bulb. He produced much more
durable lightbulbs which could
a. There are numerous
great minds of scientists last up to thirteen hours, Edison
also worked on reliable electric
and inventors who have lighting systems to help with the
contributed to solving a lot supply of electricity in
of problems for mankind. However there are neighborhoods and cities.
inventors and inventions that have also
helped people, but have never appeared in d. A Croatian immigrant named
scientific publications, some of these NikolaTesla patented the radio
inventions are everyday items, such as the in the United States in 1943.
light bulb, the popular White Out, The radio Basically, the radio had the
and even soda drinks. capacity to transmit

c. Another common item in houses and office is the electromagnetic waves in the
popular Liquid Paper or White Out. A secretary form of music, news and other
named Bette Nesmith Graham invented it in 1956. data invisibly through the air.
She used a mixture of white tempera paint with what Many other appliances such as
she had at home. She used her formula to correct telephones, remote control toys
her typing mistakes in her office and soon many of and microwave ovens use waves
her co-workers asked her for the magical liquid. She to work properly.
patented her formula and called it Liquid Paper.

Simple Past b c l i l

built u d
invented i r y h
discovered l s i f t d k g
created
t s l f
developed
f d e v e l o p e d e
worked
o j l m
made
u c a
found
n a s e n e v t s r d

d e i e

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