Found 575 Articles for Physics

Introduction Chemical energy is a type of stored energy present in the atoms which can hold the molecule together. It is a form of energy in the bonds of chemical compounds. It occurs during a chemical reaction to produce in the form of heat or any mechanical work. The released energy transformed the substance into a new substance. For example, when oxygen combines with hydrogen, thermal and light energy released by the combustion, new covalent bonds are formed between oxygen and hydrogen atoms to form water. This change is permanent and irreversible as new products are formed. There are two ... Read More

Introduction Solids are densely packed formations that cannot be easily influenced by external factors. They have a set volume, mass and form as well. However, solids never flow. The chemical and physical properties of solids are studied in solid-state chemistry & solid-state physics. Nature has four different states of matter. Based on their intermolecular interaction as well as the nature of the component particles, they are classed as solids, gases, liquids & plasma. Solid-liquid-gas.jpg: Sadi Carnot derivative work: Dave.Dunford (talk) 13:43, 15 December 2010 (UTC), Solid-liquid-gas, marked as public domain, more details on Wikimedia Commons ... Read More

Introduction Gas is a peculiar condition of matter wherein the molecules seem to be widely separated and continually moving at tremendous speeds. Gases possess no fixed size, shape, or volume. Ideal gases include those in wherein the intermolecular attractive forces become zero. In ideal gases, molecules travel at high rates of speed, which causes all particles to be far distant from the closest particle, reducing the bonds between the molecules. Natural gases at extreme temps as well as low pressures are suitable. As the temp rises, so does the kinetic energy, causing the intermolecular force to diminish. What is Gaseous ... Read More

Introduction Physics as a science which deals with the fundamental laws of nature. Physicist starts with observation and then try to formulate laws to explain various natural phenomena occurring around us. Physics is the foundation of various other sciences like Chemistry, Biology, etc. This formulation of laws becomes very easy if these laws are expressed in mathematical forms. We can also say that mathematics is the language of physics. The roots of astronomy can be traced back to ancient civilizations like the Egyptians and the Indus valley civilization, but it became separate from philosophy when Galileo introduced experimental methods to ... Read More

Introduction Bridge Rectifier convers AC input into DC output. The rectification process is done by the junction diodes which are forward biased. When a junction diode is forward biased, it admits the current to flow through it. This application of junction diodes is mainly used in rectification. The Wheatstone Bridge system is used in Bridge rectifiers. Bridge rectifiers are also called Wave bridge rectifiers. It rectifies the waves also. Half-wave rectifiers and Full-wave rectifiers are examples of bridge rectifiers. There are many types of rectifiers but the Bridge rectifier is the more effective. Bridge Rectifiers Definition Bridge rectifiers effectively ... Read More

Introduction The movement of electrons in an object provides the energy to do work. This energy is called electrical energy. The ratio of electrical energy absorbed is called an electrical power. There are many types of energy like electrical energy, mechanical energy, thermal energy, light energy, and wind energy. In our daily life, we get electrical energy from the battery. We are well aware of the movement of air and the flow of water. Similarly, the flow of an electric charge in a conductor is called current. Energy is needed to work. That is, the ability to do work ... Read More

Introduction Radioactivity, as the name introduces, is the emission of energy waves by unstable atomic nuclei of certain elements. There are 38 radioactive elements in the periodic table. The radioactive elements are highly unstable and try to become stable through successive disintegration. During this process, it emits radioactive waves. Essentially these unstable atomic nuclei hardly try to become stable while in this process, it emits radioactive waves. The alpha, beta and gamma rays are harmful to our body and out of these radiations the gamma rays are the most harmful radiation. The emission of radioactive rays is called radioactive ... Read More

Introduction Metrology is the comparison of physical quantity with its equivalent quantity. Measurement is the basis of all scientific research and experiments. Physics is a quantitative science. Physicists always deal with numbers that represent physical measurements. It is the foundation for all technological development. The accuracy of measurement is more important in science. But sometimes we fail to calculate the exact value in the measurement. It's quite hard to find the exact value of any measurement. In such cases, it will cause an error. So there is no possibility to find accurate measurements. For example, when we buy any ... Read More

Introduction Resistance plays a major role in the study of electricity. Electricity is so important for various applications in our daily life. Electric current, which is the flow of electrons, passes through the electric circuit with the component’s resistor, capacitor, inductors are used. The electrical component resistor is used in the circuit to allow current of a particular amount and stops the remaining. This was done by the circuit element called resistor by producing some resistance in the circuit. What is Resistance? We know a conductor material produces electric current by movement of free electrons in a particular ... Read More

Introduction Everything around us is visible to our eyes because of light only. Our bodies are completely useless in the absence of light called darkness. Sunlight also acts as a renewable source of energy to generate electricity using solar cells. But, the main question, which was a matter of discussion among various physicists was – “What this light is made up of or what does it constitute?”. Many theories were given by scientists to explain the nature of light but failed. However, at last, the Quantum theory of light was proposed which superseded the drawbacks of previous theories. Let’s ... Read More