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Michael Faraday found electrical theory in 1821.

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Electrical helps people in various aspects of life,Namely:

1.Health
The electricity can help operate medical equipment.

2. Entertaiment
With electrical, we can use smartphones, television, computers, or other entertainment media that require electrical.

3. Industry
The presense of electrical can help the process of operating equipment like the food industry and other industries.

4.Enviroment
Using renewble energy can also helps our earth. The ecosystem for human being and animal can still aweke.

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Group 6: The inventive solution for help humans to communicate

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Group 6: The inventive solution for help humans to communicate

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Communication is a basic human need as a social creature. However, communication is often hampered due to long distances. Therefore, Alexander Graham Bell created the telephone in 1874. This discovery had a huge impact on humans because it made it easier for humans to communicate even though distance was hindered. However, humans also need communication that is more intense and easier to carry around.

Therefore, Martin Cooper created the mobile telephone in 1983. Humans can finally communicate anywhere without having to be connected by telephone cables and can also be used to send text messages. The development of telephone did not stop there, Philips created a smartphone in 1997 which allowed someone to make video calls and browse the internet.

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Greatest Invention : Smartphone

We choose smartphone because smartphones provide access and information widely and efficiently. Secondly, smartphones make it easy to communicate with everyone anywhere and anytime. Finally, smartphone facilitates transactions like Mbanking quickly and flexibly.

In the past, people found it difficult to get information from various corners of the world. With the smartphone all information can be accested by anyone realtime wherever they are.
Before that, tansactions had  to be paid in cash and it took time to go to an ATM or the bank. Nowadays, with smartphones we can make transactions quickly and efficiently.
In the past, communication tools were very limited and it took quite a long time.

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A waste power plant is a thermal power plant that uses supercritical steam and is fueled by waste or waste methane gas.

1. As an alternative to fuel oil, from waste-based materials, where waste production is still a major problem.
2. Plastic waste is still a problem in Indonesia because it takes years to decompose. This tool can speed up the plastic recycling process and process it into fuel that is more useful for many people.
3. PLTSa is able to produce alternative fuels which currently are basic fuel materials which are limited resources.

Problems that can be solved are unresolved waste problem and limited fuel oil is depleting.

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Group 4.                                          The most important instruments for navigation: Compass. 

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Group 4.                                          The most important instruments for navigation: Compass. 

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The compass was invented in 206 AD. It was invented in China during the Han Dynasty by Sir Edmond Halley. Then in the 15th century, Ibn Majid changed the shape of the compass to 32 cardinal directions.

The use of a compass is a tool to determine direction.

The benefits of having a compass are :
1. It makes it easier for someone not to get lost
2. It is easier to explain directions
3. It is used for ship/plane navigation
4. To determine the direction of the Qibla, and
5. To find out the estimated time.

By : Intan, Wulan and Raudatul

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Group 5: One of the most invention in the world is Incandescent Lamp

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Group 5: One of the most invention in the world is Incandescent Lamp

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The incandescent lamp was the greatest invention in 1879 by Tomas Alva Edison. In our opinion, this discovery has a big impact on human survival in the current era. Where the discoveries he made could become the basis for further technology. Beside that, human activities are greatly helped in all fields, such as industry, transportation, and other activities at night. The invention of lights can also reduce the level of crime that often occurs in dark places.