The Lightning rod

  

      LIGHTNING ROD

 INVENTOR: Benjamin Franklin

 YEAR: It was invented in 1752.

IMPROVEMENTS:

It is used to protect structures from lightning strikes.

It’s not very expensive.

It is still used nowadays, so it is very efficient.

They don’t take up much space.

They can cover up to 200 metres in diameter.

DISADVANTAGES:

In the 70s there was a type of lightning rod (radioactive 

lightning rod) that affected people's health and polluted a 

lot. But in 1989 this type of lightning rod was banned, so 

contemporary lightning rods are safe. 

https://es.wikipedia.org/wiki/Pararrayos

Created by Pavel Burlacu, Manuel Gorostiza and Nicolas Cousillas

cork

CORK   

INVENTOR : Dom PierrePérignon      YEAR:1695    
 IMPROVEMENTS

• The problems that can cause the cork for the quality of the wine come from external elements.
  
• It is lightweight and elastic.
• It is a thermal and chemically inert insulation.

https://en.wikipedia.org/wiki/Bung

Battery

                                                                         

Battery

   INVENTOR: Alessandro Volta

   

YEAR: 1800

POSITIVE IMPROVEMENTS:

   + It transforms chemical energy into electrical energy .

   + It is portable .

   + It produce a continuous current .

NEGATIVE EFFECTS:

   - It can contaminate 3000 litres of water .   

—————————————————                                      —————————————————

Colaboradores de Wikipedia. Pila eléctrica [en línea]. Wikipedia, La enciclopedia libre, 2017 [fecha de consulta:

2 de octubre del 2017

]. Disponible en <https://es.wikipedia.org/w/index.php?title=Pila_el%C3%A9ctrica&oldid=102066968>.

By Pablo Lopez and Anthony Hernández

The printer

    THE   PRINTER

Inventor: Johannes Gutenberg

(1400-1468)

Year: 1437                

Improvements:       

      -Copies faster than by hand    -Copies many in a short time

-Distribute to more people.

Disadvantages:                        

-It takes up a lot of space.

-It is expensive

-It has a risk of banding

Created by Daniel Carindatoiu and Ander Gabarrus

The Hourglass

The Hourglass  

Name: Frankish Monk  

Year:it was assumed from the  8th century but  first real evidence shows it was 1338  

Improvements: Exact , Portable , Resistant, Cheap, Easy to find. 

 

Diego Santos Garcia y Samuel Charlez Losada

i (2017, August 31). In Wikipedia, The Free Encyclopedia. Retrieved 07:02, October 2, 2017 , from https://en.wikipedia.org/w/index.php?title=Hourglass&oldid=798241732