UNIT 4-The tower cranes

This video explains how we can build a tower crane and used

         Ignacio Antona

UNIT 4 - TRANSMISSION MACHINES

Here is a video about a use of pulleys in our lives.That is in construction because we can apply it to many machines like cranes , that´s because i have put this video, to show how does a crane work and also you can see how pulleys work.Remember:transmission machines makes our lives more confortable and easy .I hope you will like it.

                         

                   ALEJANDRO FERNÁNDEZ MORALES

UNIT 4- TRANSMISSION MACHINES

• Rack and pinions are simple mechanisms where a pair of gears come together to steer a vehicle by circular and lateral motions. As the pinion, which interlocks with the rack, makes circular movements, the rack is moved side-to side.

Steering Mechanism Processes

• As a steering wheel is turned, it spins the pinion, resulting in a series of other movements. Because the pinion moves in a circular fashion, and is attached to the rack, centrifugal force slides the rack back and forth. Tie rods are connected to each end of the rack, which activate the steering arms. Steering arms are connected to each wheel, and cause them to turn.

Benefits of Rack and Pinion Steering

• Rack and pinion steering systems use fewer moving parts. This allows a driver to have more control over the the direction of the wheels as the car makes turns. This often reduce the amount of effort required to steer the car. Because the steering column does not directly move tie rods, rack and pinions are generally standard on most new cars and trucks. Rack and pinion steering is also smaller and requires less space than larger, conventional steering systems.

  

UNIT 4 TRANSMISSION MACHINES

I thought that it was interesting to have more information about nut and bolts because we think that transmission machines are made to use it but before and first of all you have to manufacture them with other machines and workers.So,here is a video of the manufacturing process of nut and bolts of Discovery Channel.
I hope you will like it and found it interesting.

 

 ALEJANDRO FERNÁNDEZ MORALES                                                                       

UNIT 4 - TRANSMISSION MACHINES

Here is a video of the most visited rollercoaster in the world which is in Australia ,maybe you think that it doesn´t have any relationship with this topic of transmission machines, but it is false because we need pulleys,inclined planes,cranksafts,lots of nuts and bolts..to make it working and of course to have fun in theme parks.THE WORLD IS TECHNOLOGY AND MACHINES that we use day per day lots of times whithout thinking in the service they give to us.

ALEJANDRO FERNÁNDEZ MORALES                                                          

UNIT 4- TRANSMISSION MACHINES

Transmission machines are very important, I'm going to talk you about one of them, the levers. Levers are one of the most important transmission machines, a lever is a machine consisting of a beam pivoted at a fulcrum. It amplifies an input force to provide a greater output force, here you can see a video abut levers.

UNIT 4.- TRANSMISSION MACHINES

Good evening!

Now, in class I am studying simple machines, and I want to show you some examples of this machines. I put a link where you can watch a video about inclined plane.

https://www.youtube.com/watch?v=AZbPj0pwl0k


If you want to watch more examples about simple machines I put the link of the youtube´s list.

CLICK HERE TO WATCH THE LIST

UNIT 4.-TRANSMISSION MACHINES

Here is a video about the best machine transmission and also the most simple one that we have now: the pulleys.I think that it is really good because it is a funny way to understand how does this machines work and to know a little bit more about it.
I hope you will like it

OTHER-CHRISTMAS

Here is an interesting video about a Christmas Tree established in Mexico City which was 110.35 meters, which corresponds to the height of 40-storey building, and the diameter - 35 meters. Total weight of all metal structures was 330 tons, It is made of steel rods and wire, but consists mainly of electric garlands - 1.2 million colored lights and 80 miles of wires.Now it is on the Guiness book of records.
This video shows it:

               ALEJANDRO FERNÁNDEZ MORALES

OTHER - NEW YEAR´S EVE

Early New Year's Celebrations

The earliest recorded festivities in honor of a new year’s arrival date back some 4,000 years to ancient Babylon. For the Babylonians, the first new moon following the vernal equinox—the day in late March with an equal amount of sunlight and darkness—heralded the start of a new year. They marked the occasion with a massive religious festival called Akitu (derived from the Sumerian word for barley, which was cut in the spring) that involved a different ritual on each of its 11 days. In addition to the new year, Atiku celebrated the mythical victory of the Babylonian sky god Marduk over the evil sea goddess Tiamat and served an important political purpose: It was during this time that a new king was crowned or that the current ruler’s divine mandate was symbolically renewed.

Throughout antiquity, civilizations around the world developed increasingly sophisticated calendars, typically pinning the first day of the year to an agricultural or astronomical event. In Egypt, for instance, the year began with the annual flooding of the Nile, which coincided with the rising of the star Sirius. The first day of the Chinese new year, meanwhile, occurred with the second new moon after the winter solstice.

January 1 Becomes New Year's Day

The early Roman calendar consisted of 10 months and 304 days, with each new year beginning at the vernalequinox; according to tradition, it was created by Romulus, the founder of Rome, in the eighth century B.C. A later king, Numa Pompilius, is credited with adding the months of Januarius and Februarius. Over the centuries, the calendar fell out of sync with the sun, and in 46 B.C. the emperor Julius Caesar decided to solve the problem by consulting with the most prominent astronomers and mathematicians of his time. He introduced the Julian calendar, which closely resembles the more modern Gregorian calendar that most countries around the world use today.

As part of his reform, Caesar instituted January 1 as the first day of the year, partly to honor the month’s namesake: Janus, the Roman god of beginnings, whose two faces allowed him to look back into the past and forward into the future. Romans celebrated by offering sacrifices to Janus, exchanging gifts with one another, decorating their homes with laurel branches and attending raucous parties. In medieval Europe, Christian leaders temporarily replaced January 1 as the first of the year with days carrying more religious significance, such as December 25 (the anniversary of Jesus’ birth) and March 25 (the Feast of the Annunciation); Pope Gregory XIII reestablished January 1 as New Year’s Day in 1582.

New Year's Traditions

In many countries, New Year’s celebrations begin on the evening of December 31—New Year’s Eve—and continue into the early hours of January 1. Revelers often enjoy meals and snacks thought to bestow good luck for the coming year. In Spain and several other Spanish-speaking countries, people bolt down a dozen grapes-symbolizing their hopes for the months ahead-right before midnight. In many parts of the world, traditional New Year’s dishes feature legumes, which are thought to resemble coins and herald future financial success; examples include lentils in Italy and black-eyed peas in the southern United States. Because pigs represent progress and prosperity in some cultures, pork appears on the New Year’s Eve table in Cuba, Austria, Hungary, Portugal and other countries. Ring-shaped cakes and pastries, a sign that the year has come full circle, round out the feast in the Netherlands, Mexico, Greece and elsewhere. In Sweden and Norway, meanwhile, rice pudding with an almond hidden inside is served on New Year’s Eve; it is said that whoever finds the nut can expect 12 months of good fortune.

Other customs that are common worldwide include watching fireworks and singing songs to welcome the new year, including the ever-popular "Auld Lang Syne" in many English-speaking countries. The practice of making resolutions for the new year is thought to have first caught on among the ancient Babylonians, who made promises in order to earn the favor of the gods and start the year off on the right foot. (They would reportedly vow to pay off debts and return borrowed farm equipment.)

In the United States, the most iconic New Year’s tradition is the dropping of a giant ball in New York City's Times Square at the stroke of midnight. Millions of people around the world watch the event, which has taken place almost every year since 1907. Over time, the ball itself has ballooned from a 700-pound iron-and-wood orb to a brightly patterned sphere 12 feet in diameter and weighing in at nearly 12,000 pounds. Various towns and cities across America have developed their own versions of the Times Square ritual, organizing public drops of items ranging from pickles (Dillsburg, Pennsylvania) to possums (Tallapoosa, Georgia) at midnight on New Year’s Eve.

ALEJANDRO FERNÁNDEZ MORALES 

OTHER-CHRISTMAS LIGHTS IN AMERICA

Here is a video about the use of lights in Christmas,especially in America because for many families in the United States, taking a drive to see local light decorations during the Christmas holiday is an annual tradition. One of the most spectacular in the Washington area features more than one million lights. VOA's Deborah Block takes us to dazzling displays at Watkins Regional Park in Upper Marlboro, Maryland.

I hope you will like it.

ALEJANDRO FERNÁNDEZ MORALES                                                                          

OTHER - CHRISTMAS . VIDEO

Here is a funny video called : What does 2013 say? .This a review made by you tube of the best videos ones of 2013 because it takes the most famous parts of the most seen videos this year . It ´s really funny and i    hope that you will like it because it makes a parody of some famous characters in you tube and in this year.

ALEJANDRO FERNÁNDEZ MORALES

OTHER-VIDEO OF WORLD CUP 2014

We are nearer and nearer to the world cup so i put the official video about the Brazil´s world cup wich will be the next 12 of June so i thought that it was a good idea to put a video : the official that you will watch on tv next summer.