10/03/2016

    Exam

    Today we did the bimonthly exam about excel functions

    24/03/2016

    Holidays

    We don't have class for the Easter holidays

    31/03/2016

    Movie

    We see the film "IN SEARCH OF HAPPINESS"

    07/04/2016

    School Activity

    We don't have class for an activity of the school

    14/04/2016

    Activity in trios

    We start an activity about the problematics and the solutions in the
    inventions of the radio, the TV, the cellphone, the telephone, the GPS and Facebook.

    21/04/2016

    Activity

    We finished the activity in
trios about the problematics and the solutions in the inventions of the
radio, the TV, the cellphone, the telephone, the GPS and
    Facebook.

     

    The television

    Philo Farnsworth was a young man who was interested in the electricity,
in his youth read about this topic in a number of books and thanks this
was able to
    repair the washing machine of his family. A day reading one of the
magazines that lent him found that several people had tried to create a
hybrid between the cinema and radio but none had
    achieved. At that time, Farnsworth already had a particular problem
in mind: find a transmission system capable of operating at the same
speed than the speed of light. Possibly many others came
    to pose the same problem, but no one was able to find a solution
before that Farnsworth, which it did with only 14 years. While touring
with the combine the crop fields of the farm of their
    parents, to kill the boredom, Farnsworth digress on the problem of
the television. As Farnsworth harvested line by line the potato fields,
one of the ideas that revolutionized the twentieth
    century came to the head: sweep the image on a beam of electrons
that are diverted magnetically. With the type achievement take this
project with a budget of $6,000 drawn from the savings fund of
    Everson.

    Problems of the first television:

    1. The difficult accessibility that had the TV.

    2. The first TV that went on
sale was a radio with a neon disk that reflected the image the size of a
postage stamp making it hard to display.

    3. A mechanical system complicated that many people did not understand how to use.

    Solution of the problems:

    1. A solution for this problem
was waiting with the time would become so famous. Apart from selling it
at a reasonable price at which people of all
    social classes could arrive.

    2. As all the technology also
evolves in this case sun takes a couple of years for television had a
Screen a little bigger formed by ray tube catodico.

    3. As mentioned in the previous
case with the measure of the time the television has and is evolving
the complex system was that it was hardly the first
    TV and those who produced had to take into account the needs and
capabilities that the people of that time possessed; taking into account
that only people with money could reach the education

     

    Facebook
    The creator of Facebook Marck Zuckerberg began this project in 2003,
after the fault of his first project that was consisting of a web page
of the students of Harvard that demolish the network of
    the university. To the beginning it had the name "The Facebook"
basing it on a page that three boys of the university wanted to create
and they came to him for the design and the programming of
    this site.

    Problematics of the creation of Facebook:

 1. The legal problems that it took apparently as the theft of the idea.

 2. That on having been initiated scarcely by the network of a university could fall easily.

3. To the beginning Facebook
needed money in order that it was not falling, leaving thousands like
that of disconnected users which might cause the loss
    of the same ones and with them his friends since this is the vase of
social network (Facebook).

    Solution of the problematics:

  1. Marck Zuckerberg could avoid these problems saying from a beginning not to want to take part in the project of the brothers
    Winklevoss and his partner Divya Narendr or reaching an agreement in which they also were a part of the company of Facebook.

 2. The Facebook since initially
call it while only it was a network for the university students of
Harvard was weak since million users were connecting
    every hour. On having expanded adding other universities weak person
turned into something increasingly needing new equipment and more
people than it were helping.

3. Facebook a social free
network needed the being from the money from someone to be able to work
perfectly. The solution is easy to look for suppliers that
    wanted to support this idea to avoid a catastrophe.

     

 

The creation of the first cell phone
The mobile phone began as the evolution of the radio, or what we
know nowadays like boquitoqui. This article was used originally for
military activities, but in the 60s it was considered to be a
    suitable article for the company.

    Problematic principal of invention:

    1. Initially the mobile phone
was allowing a distance of very short communication, since the radio
frequency was not very good. This meant a great
    problem to the beginning of the invention of this article, since
though also it was a great invention for all the persons, there was
needed a range of scope very much bigger than the already
    existing one.

    2. To the credit few
frequencies, there is no capacity for the users who wanted to obtain
this mobile service. "The frequencies say to the quantity of
    users' capacity that it can manage to have a telephonic company."

    3. Other one of the big
problematic ones in the invention of the mobile phones was the size,
since his measure was approximately 33 cm of high place and
    9 of width. Another problematics, also it was his weight, due to the
fact that it was weighing 1K, that is to say, the equivalent thing to
two bags of rice.

    4. The quality of voice that
was listened by means of these telephones was really void. On their
having no been great quantity of towers of
    communication, the sign issued by these, it was very small. This
presents a problematics due to the fact that the messages transmitted by
these electronic devices, were not modified or not
    understood correctly by the recipients.

    5. Besides the problematic ones
presented previously, the principal one of all the these ones was the
scarcity of workforce of engineers in computational
    systems, which caused the delay in the design of these electronic
devices for his correct and suitable function, and an increase in the
price of the workforce.

    Solution to problematic principal of the invention:

    1. On having increased and to
improve the quality of the radio frequency, there increased in turn the
possibility of the users of speaking between major
    distances. It is possible to give him evidence of this since at
present it is allowed to him to the users do telephonic calls of big
distances, for example between continents.

    2. When they were achieved to
increase the frequencies, the number of persons increased in turn the
users' capacity, that is to say, with the possibility
    of being able to have a telephonic service. This besides favoring
the persons who before could not to accede to this service, favors also
the persons who already had a service because it allows
    them to communicate with a major number of users.

    3. This problematics was
achieved to solve only with the evolution of this device, since there
were different software and found the way of making
    memories of minor size and weight. Besides this also the visual form
of the telephone was improved so that it seems to be attractive at
sight.

    4. Approximately in 1990, the
number of companies that were basing his work on telecommunications
increased his services, and it is for this reason that
    the sign issued by these towers improved the communication between
the users of mobile phones.

    5. When were more people
involved in the matter of the mobile communication, there was a
well-known increase in the workforce in the area of engineering
    in computational systems, and a decrease also in turn well-known in
the price of the workforce.

    
    The invention of the first GPS

    The GPS is not considered to be the evolution of any electronic
tool, therefore, is considered to be an original invention. His continue
they mean Global Position System and it is defined as an
    American system of navigation and location by means of satellites.

    Problematic principal of invention:

    1. In the 70s, the GPS only
were alone were working certainly period of time. This was representing a
great problem for the company, since it was very a
    little time of service.

    2. The updates of position only
were appearing every 40 minutes, this generated a great problem for the
users of whom the GPS were using, since of not
    appearing the real time location, it might estimate a margin of
mistake.

    3. The locations were not
precise as they it are nowadays, therefore, the aim could be to be
located in the wrong place, that is to say, could be in a
    range or perimeter of 250 meters to the semibreve.

    4. The GPS were of exclusive
use for military entities, since they were considered to be dangerous
tools for the safety and privacy of a person or of a
    device.

    5. From the decade of the 70 up
to the decade of the 90, the location of the aims, it was not possible
while the issuer of the sign was in movement, by
    which the work of the search was impeded.

    Solution to problematic principal of the invention:

    1. In the 90s, the time of
functioning of the GPS spread, and was for this that the companies
promoters of this technological article increased his
    production and in turn his earnings.

    2. On having ordered the first
artificial satellite to the space, the location of an object or of a
person was giving itself real time, so the
    transmission of sign it was given in an easier way.

    3. On having improved the
transmission of sign for route satellite, the precision when a person to
locate or object was major, since already the
    possibility of mistake was diminished in a range of 250 meters to
the semibreve to a range of 1 meter or and certain GPS in centimeters.

    4. After the first
commercialization of the GPS, there was verified that not only it was
used to harm the privacy or safety of the persons. This was
    solved only by the passage of time.

    5. Approximately in the year
2000, the technology of the GPS was improved, and therefore the service
and the advantages that it was providing were major
    and more effective; an example of this was the location of a place,
person or aim, whereas the issuer and it displaces in any direction.

     

    Telephone

    The invention of the fixed telephone possesses a singular enough
history since in a beginning one was thinking that the inventor of this
appliance was Alexander Graham Bell, who I patent his
    creation at par of that of Elisha Gray, but in 2002 the Congress of
The United States recognized formally as inventor of the telephone
Antonio Meucci who had begun to experience very much before
    that both inventors; but it had not had the sufficient money to
patent his idea.

    Problematic principal of invention:

    1. The principal problem was
appearing when microphones did not exist, neither speakers nor
earphones; which towards which the invention of the telephone
    was almost impossible.

    2. Another important enough
problem there appeared in Antonio Meucci's invention, who after having
invented and constructed the first functional
    telephone decided to patent his idea. Lamentably Meucci was not
possessing sufficient money to patent it for which it decided to present
it to a company recognized with the intention of which
    this one was patenting it. For his bad luck this company did not
seem to be very interested, but even this way he did not return the
materials to Meucci. After this failure Meucci it began to
    sell his prototype in order to gather the sufficient money to patent
it, finished a time Meucci realized that it had not gathered the
sufficient money, for what it decided to send a prototype
    improved with planes, documents and all the technical details to
Western Union Telegraph with the intention of which these were buying
his appliance. Due to the fact that they could never make
    concrete a meeting Meucci it returned claiming his lazy material,
which they affirmed him it had got lost. In spite of these affirmations
he believes himself and one assures that Alexander Graham
    Mell was the one who remained with these materials, which I use as
base to carry out the same alone invention that to his name. Graham I
patent his idea, it did a contract with Western Unión and
    turned into a celebrity.

    Meucci on having seen this, I fight to demonstrate that that idea
was his, but sadly no good attorney wanted to get with the Western
Union, for which Meucci I never manage to gain the
    denunciation in opposition to Alexander. Time later Meucci died for
what the case was closed.

    3. The telephone was not
possessing any sign of call; for what was necessary to strike the
diaphragm with a pencil or to shout in order that another
    speaker was understanding that someone wanted to communicate with
him.

    4. The system of the first telephones towards which the transmitted voice was listened very weakly.

    5. The first communications could not be done between long distances

    Solution to problematic principal of the invention:

    1. The scientist Alexander
Graham Bell stimulated for realizing devices that were helping the deaf
ones and after many investigation, discovered that to
    transmit voice it humanizes only it could use a direct current, so
being based on this information I construct and patent the first
telephone capable of transmitting and receiving human voice
    with all his quality and stamp.

    2. In 1860 an Italian magazine I
declare that Meucci was the inventor of the telephone and assure others
to that this one was possessing more than 30
    functional devices in his housing. It was thanks to this information
that in 2002 the American congress I declare to Meucci as the real
inventor.

    3. At the end of 1877 Watson (Assistant of Alexander) I add a small device that was striking the diaphragm like notice or caller.

    4. Emilie Berliner invent the
transmitter of carbon, appliance that was producing an effect of
extension allowing that the stamp of voice was major that
    in that of Alexander's telephone.

    5. The Danish Hans Christian
Orsted I believe the electromagnetism on having discovered that a
relation existed between the electrical current and the
    power. This discovery allowed to realize communications to long
distances

     

    The radio

    The creation of the radio can attribute several persons to him as
consequence of many devices created by these for the production of the
above mentioned appliance. In spite of this it is more
    guessed right to say that the radio was invented by Guillermo
Marconi due to the fact that it was the only one capable of integrating
in an alone equipment all the knowledge and devices related
    to the sending and receipt of electromagnetic waves. Thanks to the
radio the world became smaller, since any nation could spread messages,
slogans and instructions crossing borders and
    geographical accidents of practically instantaneous form.

    Problematic principal of the invention:

    1. The principal problem in the
creation of the radio was it of joining all the information it exists
on him he sent of electromagnetic waves; the use of
    the first antenna to improve the quality and the wave use of radio
to create the only equipment capable of transmitting information and to
take her to diverse parts of the world.

    2. The first radiuses were
possessing certain problems of interference and statics that they were
affecting seriously in the scout of the recipients.

    3. There was wanted that the
radio was within reach of a most of the population by what there was
created the radio of galena, which sadly did not have
    good quality of sound and could not be heard by several persons
simultaneously

    4. The dimension and the weight
that the radiuses were possessing were doing that the displacement of
these was almost impossible; for what the persons
    could not take the radio to daily activities.

    5. In spite of the fact that
the modulation in extent I improve notably the audio problems even
certain parasites existed radioeléctricos that were
    affecting the communications.

    6. The audio messages sent by means of the first radioes only could be transmitted in code Morse.

    7. With the recipient to galena the radio only could be listened by means of earphones, which was meaning a low level of audio.

    Solution to problematic principal of the invention:

    1.The scientist Guillermo
Marconi was the first one in creating and patenting the first device
holder of all these characteristics and of demonstrating that
    if it was possible to transmit the information.

    2. In 1937 the first systems
based on modulation were created in extent (AM) which allowed to reduce
the problems of interference and to improve the
    quality of the sound. The AM also allowed that the electromagnetic
waves should come to major distances.

    3. There were implemented the valves of emptinesses which improved notably the quality of the sound.

    4. The transistor was imposed
in the equipments of audios servants in order that these were less heavy
and easier to move; since these new devices were
    not depending on the connection to the electrical network.

    5. There was created the
modulation of frequency (FM) which allowed to achieve a system of radio
of high quality and without so many interferences.

    6. Thanks to the contributions of A. Fleming and R.A Fessenden achieved the transmission of human voice.

    7. Lee De Forest I believe the
audión, with which I substitute the recipient galena, and implement new
radiuses with speakers and amplifiers, improving
    notably the quality of the sound.

     

     

    28/04/2016

    Activity

    We have to do an animation in PooToon