Metals

You can read this text to start learning about metallic materials.

The Oersted´s experiment

Hans Oersted was preparing his class of physics in the University of Copenhaguen, one evening of April, 1820, when, on having moved a compass next to a cable that was leading electrical current, it noticed that the needle was moving up to staying in a position perpendicular to the direction of the cable. Later, a big quantity of times repeated the experiment, confirming the phenomenon. For the first time a connection had been between the electricity and the magnetism, in an accident that can be considered to be the birth of the electromagnetism.

THE CURRENT THAT CIRCULATES ALONG A DRIVER IS CAPABLE OF CREATING A MAGNETIC FIELD AROUND HIM.

The Michael Faraday´s experiment

Thanks to Oersted, Michael Faraday knew that an electrical current generates magnetic fields. In 1831 it tried to reproduce this process, but in inverse sense, that is to say, that a magnetic field will generate an electrical current.In 1831 the English physicist Michael Faraday discovers that moving a magnet inside an electrical driver an electrical current is generated. To this phenomenon it is named an Electromagnetic Induction and to the generated current, induced current and it is an alternating current.
The electromagnetic induction is the foundation of the generators of electrical current.

How Internet works.

History of the Internet.

History of Computers

The evolution of the computer.

The Steps of the Technological Process

If you have to solve a technology problem, you have to follow a process with some steps. See this video and you will understand.

The seven golden rules of power tool safety.

• You Are The Most Dangerous Power Tool.
• All Tools are Equally Dangerous, but Some are More Frequently Harmful.
• Keep Your Tools Sharp, True, Clean and Running Smooth.
• Keep Your Work Space Tidy, Well Lit and Distraction Free.
• Purchase or Make the Appropriate Safety Accessories.
• Keep a First Aid Kit Handy.
• Always Trust Your Instincts.

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