1. UNIVERSIDAD TECNOLOGICA DEL ESTADO DE
ZACATECAS
CAREER : MANTENIMIENTO ÁREA INDUSTRIAL
ESTUDENT: JONATHAN MONTELONGO GUZMÁN
TECHER: LIC. LUZ MARÍA JUÁREZ D
MATTER: ENGLISH IV
UNIT: III
2. THE CANDLE
30,000 years ago used a type of candle
which was to pour oil or grease on a hollow
stone to that end and getting fiber as a
candle wick primitive. He believes it was the
lighting that was used when drawings were
made famous prehistoric caves of Spain and
France.
3.
4. WHEEL
Appeared around 3500 B.C. The engravings
show the evolution of a wheel
700 B.C. (Assyria), Leonardo flared wheel
and tire with nails beginning
twentieth century
5.
6. ALARM.
Manufactured in 1600. Depicts the mechanism
characteristic "verge and foliot". The clock of St.
Paul's Cathedral in London was based on this
principle.
The simple principle was the basis for more complex
and luxurious appliances such as the famous water
clock Ctesibius of Alexandria (third century BC),
equipped with a system of gears, or the luxurious
copper and gold hourglass sent by Caliph Harun-al-
Raschid the Emperor Charlemagne, giving each time
dropping the corresponding number of metal balls on
a plate, giving due blows. Also the hourglass dating
from antiquity, and remained in use until the
eighteenth century.
7.
8. BROADCASTING
by wireless telephony.
The shape and number of vibrations was
variable, and it was necessary to discover
how to print to radio wave. At this point also
entered to play the terms of amplitude and
frequency.
9. ELECTRONIC EYE.
Radio telescope antenna Schenectady base
that can pick up signals from a distance of
410,000 miles.
10. BICYCLE
The history of the bicycle can be traced to
one of his ancestors built by Farfler in 1655,
rather was a tricycle, and more than a
century after Blanchard Magurier and
conducted a series of experiments that were
properly in a project of Karl Drais, that
created the hobby horse or dandy horse in
1818: two wheels mounted on a wooden
frame with a handle, and the vehicle had to
push with his feet, which was not very
practical
