I have always been fascinated by the basic mechanics of a speaker, utilizing the primal universal forces of electricity, magnetism, frequency and vibration. A speaker works by converting electrical signals into sound. It has a magnet, a coil of wire (called a voice coil), and a diaphragm (usually shaped like a cone). When an electric current passes through the voice coil, it creates a magnetic field that interacts with the permanent magnet. This makes the coil and the attached diaphragm move bac

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Computer-delivered IELTS is now available in three cities: Manila, Cebu and Baguio. We sat down with actual computer-delivered IELTS test takers to find out why they prefer to take IELTS on computer with the British Council. Watch the whole video and take part in the poll: Which feature of computer-delivered IELTS do you value the most? Register your computer-delivered IELTS today: http://bit.ly/2FL3UbI #IELTS #TakeIELTSwithBritishCouncil #IchooseBritishCouncil | IELTS British Council Philippine