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Why Touch Screens Only Respond to Fingers: The Science Behind the Sensitivity

  I. Introduction Touch screen technology enables direct interaction with devices through touch. Using either capacitive or resistive methods, these screens detect user input, translating it into commands. Widely used in smartphones, tablets, and kiosks, touch screens offer intuitive navigation, eliminating the need for physical buttons and enhancing user experience across various applications. Understanding how touch screens work is crucial for users and developers alike. It enhances user experience by ensuring effective interaction, informs choices in device selection, and guides troubleshooting. For developers, knowledge of touch technology is vital for creating intuitive applications and improving interface design, ultimately leading to greater user satisfaction. This blog aims to explore why touch screens predominantly respond to fingers, delving into the science behind touch sensitivity. By examining the principles of capacitive and resistive technology, we will uncover the
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Starter Motor || How the starting systems work?

  What is starter Motor? The starter motor is just like an electric motor that cranks the engine to start. It consists of a powerful DC (Direct Current) electric motor and the starter solenoid that is attached to the motor. In most of the vehicles, the starter motor is bolted to the engine or transmission. The starter motor is powered by the battery either 12 V or 24 V depending upon the vehicle. In case of passenger cars it is 12v and in commercial vehicles it is 24V. To turn over the engine, the starter motor requires high electric current, which means the battery has to have sufficient power. If the battery is discharged, the lights in a vehicle might not work, but it won't be enough power (current) to turn over the starter motor. When starting a vehicle with a fully discharged battery, there is a single click or nothing happens at all. The starter motor doesn't run, even when there is a 12-Volt power at the starter control terminal.   Another symptom is when the starter
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What is an alternator? || How is it different from generator?

  What is alternator? As we know battery powers the electrics of the vehicle and alternator is the key player in battery charging system who feeds battery. An  alternator  is a device that converts mechanical energy into electrical energy and used in automobiles to charge the battery. Just like electrical generator it also works on the principle of Faradays law. How is it different from generator? Ø   Both alternator and generator converts’ mechanical energy into electrical energy but an alternator only produces AC whereas a generator may produce AC or DC. Ø   In an alternator, magnet is the rotating part where as inn generator the field winding rotates. Ø   Alternators are self-excited type but generators are not. How does it work? An alternator is a self-excited device in which the magnetic field is generated the moment we switch on the ignition switch which means electricity flows from battery to coils. To strengthen the magnetic field shoes are provided alternately- s
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Measurement of Temperature II Which Electro mechanical devices used to measure temperature?

 Introduction: Temperature may be defined as the condition of a body by virtue of which heat is transferred from one system to another.   Temperature and heat are different.   Temperature is a measure of the internal energy of a system whereas as heat is a measure of transfer of energy from one system to another.   The first ever temperature measuring instrument was developed by Galileo Galilei in 17 th century and it has undergone significant improvement in it over the time.   The various temperature scales are related as follows,   F=1.8C+32   C=(F-32)/1.8   R=F+460   K=C+273   Methods of measuring temperature:   Temperature can be sensed using many devices, which can be broadly be classified into two types as contacting and non contacting type.   Contact Type:   a)       Liquid in glass thermometer   b)       Bimetallic strip Thermometer   c)       Pressure thermometer   d)      Thermocouples   e)       Resistance temperature detectors(RTD)   f)   
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