What is Resistor ?

          An element which takes control out of voltage by dropping upon it and also to limit the current passing into the conductor through it is called a RESISTOR. This is used in a circuit just to provide not only voltage drop but also acts as a protection device such that it is burned off if the current is too high for protecting the main device.

What is a Database ?

          A Database is a huge ocean where a very large collection of data which are in the form of bits regarding various servers Internet Protocol (IP) Addresses, Uniform Resource Locator (URLs), etc...

If any user needs to access data from any website or URL, the data is being retrieved from the Database and the latter sends every information except some confidential data to the user. It is only a storage bin but with the aid of a Database Management System, it retrieves and sends packets of data to various global DBMS users all over the world. 

What is a Data ?

  

        Data is a raw collection of bits having ones and zeroes in its flip-flop registers. Generally, Data is obtained from real-world entities. Every Body in our Universe is connected to one another such that there is an exchange of information with the combination of exchange of energy and matter in the subatomic region.  

What is a Pixel ?

          

    There are many different kinds of entities in the digital world. This world is made of the smallest parts of color bands. These smallest parts of color bands are called Pixels. These are the building blocks of everybody in the digital world. They convert the real bodies into a cloned (or) virtual ones which are nearly similar to the real-world entities. But the difference is these don't have a real mass but appears to be real as a real-world 2 - dimensional (or) 3 - dimensional entity. These pixels are basically are in three colors. They are known as RGB i.e., Red, Green, and Blue. Everybody (or) object in this digital world is a simulation of the real world. These simulations may be in different periods of time.

What is Capacitor ?

            An element which can store electrical energy in the form of opposite charges strongly attracted to each other by creating a potential across its plates and repelled by a dielectric medium which may be air, paper, etc is called a CAPACITOR. This is used in a circuit in order to filter the AC harmonics if placed in shunt and DC harmonics if placed in series of a circuit. Capacitors are of many types. Some of them are

• Tantalum Capacitors
• Electrolytic Capacitors
• Ceramic Capacitors

What is a Microcontroller ?

        A Microcontroller is a small computer in which the central processing unit, arithmetic operations, set of instructions, etc are a part of it. It is equivalent to a mini computer that can store memory and can do various operations that are all imparted to it.

      Generally, we need the computer to perform various tasks but after the invention of microcontroller, there is no need for the computer to get involved in the work. Only the thing is to impart the program into the microcontroller and memory is attached to it. The microcontroller alone performs the tasks assigned to it.

             In olden days, only 8085 microcontrollers were used to travel through the moon by inserting the chip into the astronaut suit. Now we have sophisticated microcontrollers but there is no development in the space journey after the invasion of the moon rather than scoping for mars and distant planets in our solar system and even to the center of the Milkyway.

            The Microcontroller can alone run the hardware induced software run machines but whereas a microprocessor cannot run individually without the aid of memory and clock devices.

What is a Supernova ?

          There are millions of stars in our universe. Every star has a life cycle. Our universe has average stars and massive stars. Both exhibit heat and light. At some instant of time, star starts to use all its energy and exhibit the all of its light. This is the brightest form of every star in our universe. This stage of star's life cycle is called Supernova. Due to these supernova's the dust and energy which is present in them spreads across the deep space and sometimes forms into a Nebula. Supernova's release the complete light using its fuel which is present in it. These are the brightest objects in this universe. These play a crucial role in the expansion of our universe due to the explosions which take place in them. These explosions spread dust and gases across the deep space which helps in enlarging our universe.   

What is a Proton ?

          Every particle (or) a body has an opposite of it in our vast universe. In a subatomic range, There are electrons which are negatively charged. There oppositely charged subatomic particles are generally referred to as Proton. Every element in our universe has one (or) more protons. These protons in an atom always exist combined with one (or) more neutrons i.e., they exist in a bounded form. Lack of electrons is also known as Protons. The charge of a proton is +1.60217662 * 10^-19. These have some kind of interatomic attractive forces where these helps maintain an atom to be in a stable state. Proton plays a crucial role in balancing the whole universe. If the proton doesn't exist, The universe gets collapsed and enter into a dark singularity.   

What is a Nebula Cloud ?

          There are many strange bodies in our universe. One of those strange bodies is Nebula Cloud. These are the parental bodies of the stars. Nebulae are the giant clouds of dust and gas which are observed in deep space. Sometimes, These are formed from a dying star which makes a super explosion to turn into a black hole. At the beginning of our universe, These are one of the bodies that are existed which gave birth to the first star in our universe. Nebulae are formed in different shapes. These are named according to their shape just identify them. Some Nebulae are visible in the deep shape and some nebulae don't visible. This is due to the types of gases which are present in them when reacted with their surroundings produce blazing light. Stars are ones that are formed from the Nebula. Nebulae have gravity within them. This inter attractive forces which are present in them bind the stars and gases with each other and form's into a Star. This is the reason stars contain both energy and mass within them. This is why Nebulae plays a crucial role in the formation of stars and helps in the expansion of our universe.       

What is an Atom ?

          Everybody in this universe is made of smallest particles which are called as Atoms. These contain other sub-atomic particles which exist as the combination of mass and energy. In an atom, There are three kinds of particles namely Electrons, Protons, and Neutrons. Protons and Neutrons are situated at the center in a combined state which is called a Nucleus. Electrons revolve around this Nucleus in different states due to some centrifugal and centripetal forces. These atoms generally are known as the building blocks of the universe. But its arrangement is different in solids, liquids, and gases which may sometimes change the shape of the whole universe due to these different due to these packing of atoms.    

What is a Neutron ?

          In our Universe, Every particle contains three fundamental particles. One of the particles in these three is Neutron. These particles balance the whole universe with the charges contained within them. Neutron is the particle which is present in the subatomic state in an atom. This particle plays a crucial role in the building of our whole universe. Additional to the energy, If a substance needs to stabilize it should contain energy with mass. Energy cannot exist in a raw state. In an atom with the other charged particles neutron exist at the center with a charged particle. This charged particle holds the mass to stabilize the entire system. Our whole universe may work in a similar way to get balanced throughout the entire empty space. Neutron made into a mass because it doesn't have any charge and exists in a stable state when it is held with the combination of charge. The place where charge combined existed with the Neutron in an atom is called Nucleus.       

What is a Star ?

  

        At the starting of the Universe, It consists only of dust and other elemental particles. A Star is a celestial body which is formed from a Nebula cloud i.e., from the dust and elements which spread throughout the universe. These are formed due to the difference of energy of protons and electrons which are in the elemental form. Due to the fundamental forces of attraction, This dust particles and elements are combined with the force of gravity and formed into stars where some of its parts got separated to form planets.

What is a Black Hole ?

         In our universe, Every massive star life has different stages in its life cycle. These states are basically derived in four stages. These are Massive Star, Red Supergiant, Supernova, and Blackhole (or) sometimes turns into a Neutron Star. But, The last stage of life cycle is generally known as the Black Hole. This transformation of the star into black hole happens when a star losses all its energy. This energy is actually obtained from a nebula which is in the elemental form such as gases like Hydrogen (H) and Helium (He). In the last stages, the gases are completely consumed by the star and the star comes to zero energy state and turns into most mysterious body " Blackhole". This Blackhole contains only the fundamental force gravity in a very infinite state, i.e., we actually cannot measure this Gravity. This black hole starts to pull all the objects which comes near it to an infinitely very large distance i.e., we cannot actually imagine where these objects actually go. Blackhole has the capacity to even suck largely sized stars into it and releases some kind of radiation. In this Blackhole, There is a state named Singularity where the sucked objects infinitely travel into this portion i.e., the object becomes infinitely smaller when it enters into this singularity if the body is able to resist in this region.

What is an Electron ?

  

        In a substance, When we reach into a microscopic state, There is a region named sub-atomic region. Here are particles found in three different states. There are some particles which are negatively charged. These negatively charged particles are called as Electrons. These revolve around some central particles due to some centripetal forces which present in them. These are also called building blocks of any substance in the universe. An electron has a charge of about -1.60217662 * 10^-19 coulombs since the charge of the subatomic particles are measured in coulombs.   

What is a Planet ?

   

          There are trillions of Galaxies in our Universe. Every Galaxy in our Universe contains a trillion of Stars. Each Star in every Galaxy is surrounded by one (or) more rocky bodies revolving around them. These rocky bodies are generally known as Planets. These planets revolve around the star in an elliptical path. Each planet has a specified time according to its distance from the star. Our Star which is at the center is named as Sun. Presently, There are eight planets which revolve around our Sun. So, Our planetary system with the Sun is called as Solar System. In other planetary systems, There may be any number of planets around the other stars in our Galaxy. Some are habitable and some are not. As the distance of the planets increases from there respective stars, These planets experience a decrease in the temperatures on their surface.       

What is a Galaxy ?

          Our Universe is scattered in a vast space. With the increase in Energy and the rate of Time throughout the universe, It is expanding day by day. There are three types of Galaxies presently in our Universe. These are Spiral Galaxies, Elliptical Galaxies, and Irregular Galaxies Generally, In our universe, we see stars are arranged in a spiral manner. These cluster of stars which are arranged in a spiral manner are generally known as Spiral Galaxies. Every Galaxy in our Universe is controlled by a Black Hole which is located at the center of it. Every Galaxy consists of billions of stars. These are stars are surrounded by planets. With this Imagination, There may be millions and trillions of planets in Every Galaxy. Our Galaxy is named as the Milky Way Galaxy. Every Galaxy in our Universe revolves around the Universe and rotate around itself.