MECHANISMS - MECHANISMS IN ATTRACTIONS

Also, there are technology in fairs. These are two attractions which attractions that are powered by mechanisms. 

TREADMILL: It´s a transmission system of friction wheels. 

Here, the cabins aren´t inserted and we can see the driven wheels. The work with a belt and a electric motor.

KANGAROO: It has a lever of the third degree. In the medium, there are a fixed point and hidraulic pistons move the arms. In the photo you can see the pistons.

UNIT 6 - WHEEL MEETS FRICTION

In this short video in which you can see what are friction wheels and how they work easily and interesting. 

MECHANISMS - ANTIKYTHERA MECHANISM

In 1900, between the ruins of a shipwreck in Antikythera island, it was discovered the most complicated mechanism that we have of the ancient. It was build around the second half of the second century B.C. and it is in the National Archaeological Museum of Athens. It has 30 gears converved but in the ancient it has twice approximately. It permited make several astronomical calculations, including the position of the Sun, the Moon phase, perhaps the situation of planets, the stars appearance on the horizon and the dates of the Olympic games. Today, the function of this mechanism is disputed because it is very complicated.

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UNIT 5 - Can you identify these mechanisms?

In this video, you can see some mechanisms constructed with Lego that we have studied in class. Can you identify them?

UNIT 5 - RESOURCES

Some resources for review this unit:

- Here you have an interesing game to know the use of the simple machines (inclined plane, level, wheels, pulley) This is a game of the museum of the Science of Chicago. Try to obtend the objects with simple machines!

- In this web, you can see a section of mechanisms and you can find a lot of webs, presentations, notes and animations for review this unit.

UNIT 5 - HOUSE OF MACHINES

This is a good example of connected mechanisms in which you can see a house of machines in which there are mechanims made with wood. 

UNIT 5 - "THE GREAT SEARCH"

Here we have a short video in which you can see the evolution of the technology with the use of the energy souces and simple machines. Hope you like it:)

UNIT 5 - Mechanisms

Man builds objects for meet his needs and improve his quality of life. If you look around you, you can see that the majority of this objects have or produce some kind of movement with a purpose, like: clear the clothes, indicate the time, move people...

Here we have the example of a coffee grinder. It has a  simple operation and it´s based on a lever on the top that turns gears of the machine and the grains of coffe become pulverized. The result is collected in a drawer and it´s ready for be taken in a cup of coffee.