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A capacitor is an electrical component used to store electrical energy in the form of an electric field. It typically consists of two conducting plates separated by a dielectric. Capacitance is measured in farads (F) and expresses the amount of charge the capacitor can store at a given voltage. When comparing two capacitors, the main difference is their capacitance; a larger capacitor can store more charge at the same voltage than a smaller one. For example, if we have a 10 microfarad capacitor and a 1 microfarad capacitor, the former can store ten times more charge at the same voltage. In addition, the type of dielectric between the plates affects capacitance, as some insulating materials, such as ceramic or plastic, further enhance capacitance. Also, the size and shape of a capacitor can affect its electrical properties, such as leakage resistance and the frequency at which it can operate effectively. In practical applications, capacitors are used in electrical circuits to smooth current, improve voltage stability, and store energy in renewable energy systems .
 
 
 
 

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Alpha (α), beta (β), and gamma (γ) radiation differ in their properties and effects on matter. Alpha radiation consists of helium nuclei (2 protons and 2 neutrons). It has a high ionizing power due to its positive charge and large mass, but it has low attenuation power, as it can be blocked by a sheet of paper or a few centimeters of air. Beta radiation, which consists of electrons or positrons, has a medium ionizing power, which makes it interact with atoms less effectively than alpha. However, it penetrates materials better, and typically requires materials such as plastic or glass for attenuation. Gamma radiation, in contrast, is electromagnetic radiation with no charge, making it the least ionizing, but it has a high penetrating power, as it requires large amounts of lead or concrete to reduce its intensity. These properties make each type of radiation suitable for different applications in nuclear medicine, industry, and scientific research.
 
 
 

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Now we have two questions ! 

The first is what is the name of this acid ? 

The second is why did it react with the metal and not with the human hand or the glass (the container) ?
 
 

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