famous inventors

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Famous Inventors

• 
  
  By
• Solly Fari

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Who was alexander bell?

• Alexander Graham Bell was an influential
  scientist, engineer and inventor. He was born on
  March 3, 1847 in Edinburgh, Scotland. He died on
  August 2, 1922 at the age of 75. He is widely
  credited with the invention of the first
  practical telephone.

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What did he Invent?
His actual Blueprint!

• In 1875, Bell makes a first prototype of the
  vibraphone. The apparatus is actuated using
  mobile a metal strip, similar to those of the
  clarinets. In March 1876, Bell improves quality
  of the vibraphone by replacing the strip by a
  wire plunged in a container filled of water and
  acid. The liquid produces module the intensity of
  the current in the wire in a way equivalent to
  the sound waves of the atmosphere.
• Bell visits eminent scientist Joseph Henry at the
  Smithsonian Institution and explains to him his
  idea for the telephone, in march, 1975. J.Henry
  recognizes the significance of Bell's work and
  offers him encouragement. In September 1875, he
  began to write the specifications for the phone.
  14 February 1876, Bell's telephone patent
  application is filed at the United States Patent
  Office.

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How did he invent it?

• Bell was issued the first patent for the
  telephone in March 1876. Along with several other
  inventors, Bell had been working on methods
  transmit multiple frequencies simultaneously over
  a wire - which is essential to voice transmission
  over a wire. The idea of doing seems to have
  first been suggested publicly by Innocenzo
  Manzetti in 1844. In August 1854, Charles
  Bourseul published an article suggesting a method
  for constructing a 'make-and-break' type
  telephone transmitter. To quote Boursuel
• "Suppose that a man speaks near a movable disc
  sufficiently flexible to lose none of the
  vibrations of the voice that this disc
  alternately makes and breaks the currents from a
  battery you may have at a distance another disc
  which will simultaneously execute the same
  vibrations.
• In a way this would be a sort of digital
  transmission with the current either on or off
  and the vibrations that create the sound being
  produced on the receiving end by the frequency of
  the on and off signal pulling and releasing the
  diaphragm on the other end. This 'make-and-break'
  concept was an extension of the telegraph methods
  then in use.
• In October of 1861, Johann Philipp Reis built
  and demonstrated a device based on Bourseul's
  idea.

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Why was this invention helpful in the 1800s?

• After the telephone was invented people could
  communicate with their friends and family so they
  were pretty happy. It was a good thing that the
  telephone was invented or people would have to
  travel all the way to their friends house just to
  talk to them. Or they wouldn't be able to talk at
  all! That is how the telephone changed life in
  the 1800s. How does the telephone changed the
  world?
• The telephone helped people to improve their
  communication system. Telephone's speed was much
  more effective than mails, or letters. It came
  from one person to the other straight away,
  avoiding any distance.

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Why is the telephone useful now?

• The telephone is useful because it saves you
  going to that person. The telephone was invented
  so you can talk to someone on the side of the
  world for as like as like!! It is useful because
  it is device for making communication with
  another person. It is useful as well for a
  company who utilize a small business telephone
  systems because of its benefits. The usefulness
  of the telephone has made it one of the most
  indispensable household and business appliance.
  It is voted as the best invention of the 21th
  century

The telephone has had a big impact!!!!!!
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How has the telephone changed from its original
invention?
Telephones have changed dramatically since
Alexander Graham Bell spoke the first words into
a telephone on March 10, 1876. Overall, theyve
improved since then, but the road wasnt always
smooth. Heres a look back at the most important
advances in telephone technology and some of the
worst.                                          
                                                 
The original phone On March 10, 1876, Alexander
Graham Bell spoke into his device and said to his
assistant, Mr. Watson, come here, I want to see
you. In doing so, Bell launched the telephone
era with the first bi-directional electronic
transmission of the spoken word. At least that is
how the story typically goes. While Bell received
the first patent for a telephone, the origin of
the telephone is complicated and inconclusive,
with Elisha Gray, Antonio Meucci of Italy, and
Innocenzo Manzetti each claiming to be the
phones true inventor.
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A timeline of the telephone
Motorola DynaTAC
Push-button
Candlestick
Rotary
Answering machine
Portable phones
Nokia 5110
Caller ID
Motorola StarTAC
Sanyo SCP5300
Palm Treo
Motorola RAZR
BlackBerry
iPhone and Android
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Thomas Edison

• Who was Thomas Edison?
• Thomas Alva Edison (February 11, 1847 October
  18, 1931) was an American inventor and
  businessman. He developed many devices that
  greatly influenced life around the world,
  including the phonograph, the motion picture
  camera, and a long-lasting, practical electric
  light bulb.

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What did he invent?

• The Phonograph (1877) -- Edison earned his
  nickname "The Wizard of Menlo Park" in November
  1877 when he invented the world's first method of
  recording and playing back sound.
• The Carbon Microphone (1877-78) -- Alexander
  Graham Bell may have invented the telephone, but
  it was Edison who invented a microphone that
  turned the telephone from a promising gadget into
  an indispensable machine with real, practical
  applications.
• The Incandescent Light Bulb (1879) -- Without a
  doubt, the light bulb is Edison's most famous
  invention. Scientists and inventors had been
  racing against each other for years trying to
  invent artificial light. Edison cinched the win
  by creating an incandescent bulb with a carbon
  filament that could be practically reproduced.
• The Brockton Breakthrough (1883) -- Once the
  world had light, it needed a way to power that
  light. In the tiny town of Brockton, Mass.,
  Edison set out to construct one of the world's
  first three-wire electrical power plants as a way
  to show the world that electric power was safer
  and more efficient than gas power.
• The Kinescope, Kinetograph and Kinetophone
  (1888-1890s) -- Edison and his assistant William
  Dickson first invented the Kinescope, a boxlike
  contraption that enabled a single viewer to watch
  a motion picture short through a peephole. Films
  were recorded with a motion picture camera called
  the Kinetograph -- later, the Kinetophone
  attempted to add sound to moving pictures.
• Nickel-iron Batteries(1901) --Before steam- and
  gasoline-powered engines were popularized, some
  of the world's first automobiles were powered by
  batteries. Edison's nickel-iron batteries were an
  improvement, both in terms of ecological impact
  and charging time, over the more commonly used
  lead-acid batteries of the day.

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The incandescent light bulb

• An incandescent light bulb, incandescent lamp or
  incandescent light globe is an electric light
  which produces light with a wire filament heated
  to a high temperature by an electric current
  passing through it, until it glows.

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How did he do invent it?

• Edison did not invent the first electric light
  bulb, but instead invented the first commercially
  practical incandescent light.

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Why was the invention useful in 1879 and now?
Without this invention we would still be spending
our days and nights in darkness. Unless you
prefer the use of candle light, oil lamps, camp
fires and the such all the time, light bulbs are
an important part of our daily lives because
simplyspeaking they provide the light we need in
order to see.The invention enables us to be able
to conduct work at night. This greatly improves
productivity, enhances the quality of our life,
and reduces crime rates. Personally, I think the
wheel is the most important invention. It's the
precursor to technology as we know it. The link
below provides more insights on this topic.
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How has the light bulb changed from its original
invention?
Bamboo filament
Fluorescent lamp
Long lasting filament
Electric light bulb
Oil lamp
Gas lamp
Vacuum tube lamp
Arc lamp
Gas-discharge lamp
Mercury-vapour lamp
Neon lighting tungsten filament
Improved fluorescent lamp
White SON
Red LED
OLED
Compact fluorescent lamp
Magnetic induction lamp
LED lamp
Sulphur lamp
Blue LED