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...circuits, which include logic gates, microprocessors and even software. And you may be aware of some of the fundamental principles that describe the way that voltages and currents in a circuit are related, including Ohm’s law and Kirchhoff’s voltage and current laws. Whilst all of this is necessary to understand electronics, it doesn’t really explain how electronics...

...circuit, the blood then is pumped to the lungs, where the oxygen content is replenished, and blood with a high oxygen content returns to the left atria and ventricle to start the circuit again. The main chambers, which have a thick muscular wall to pump the blood efficiently to the lungs or the body are called ventricles, with the left ventricle being the thickest of all...

...circuit with a metal wire, a battery and a bulb. When the wire is connected between the positive and negative terminals of the battery, one end of the wire becomes positively charged and the other becomes negatively charged. This causes the electrons, which are free to move, to travel through the wire towards the positive terminal of the battery, where they are removed....

...circuit boards woven into the fabric, and a microphone in the collar. Just input the number on your cuff, and start talking. Transcript A flexible Nokia prototype. There would be no risk of running out of power mid-conversation – you’d just move your arms about to charge the batteries. The jacket would be washable – but you’d need another “phone jacket” on the...

...circuit, anodes are also immersed in the electrolyte. In the bath, current is transferred in the electrolyte by ionic conduction. The potential applied between anode and cathode is the driving force for transfer of charge across the metal-solution interfaces (2–16 V), e.g. electro deposition of copper from copper sulphate: CuSO4→ Cu2++ SO2-4 [Images to demonstrate...