Physics

Physics is the branch of science that pertains to the study of different forms of matter and energy, their properties and various interactions and transformations that they undergo. Physics includes the fields of acoustics, optics, mechanics, thermodynamics, electromagnetism, cryogenics, photonics, astrophysics, fluid dynamics, quantum mechanics, plasma, particle physics, atomic and nuclear physics. This section provides several physics articles for students and teachers focusing on elementary, middle and high school physics for kids. Herein you'll find useful information for physics students, scholars, educators, and professionals alike.
  • Quantum Computing Explained
    Quantum computing has been a speculative subject that was originally developed as just an idea. More commonly known as an area belonging to quantum mechanics, quantum computing is really a promising fusion of concepts from physics, mathematics and computer science. Why promising? Let's find out.
  • Is Teleportation Possible?
    We all have, at some point or the other, come across people teleporting from one place to another for whatever reason. Mostly through Star Trek. Before you close your eyes and go "Beam me up, Scotty!", there are a few things that will burst your bubble mentioned in the article, but only for the present. Nobody said it's not impossible in the future! Human aside, I would just like something that can teleport cheesecakes to me.
  • Basics of Semiconductors
    Semiconductor devices are electronic components that are used in many devices such as computers, mobile phones, etc., which we use in our daily life. Its applications are vast especially in power consumption devices. Scroll down to learn about the fundamentals of semiconductors.
  • Relation Between Metaphysics and Physics
    There seems to be an eternal gray area between the realms of what physics can explain and what spirituality terms as logic. This land will always be dominated by the insatiable thirst for knowledge of how, or rather why, things are the way they are, and why do some acts in the universe leave us with our mouths open. Such is the concept of metaphysics.
  • What are the Different Colors of Noise
    Colors are not just about what you see around you or what you paint. It is something that creates an activity or provokes a reaction. And if you happen to study physics of sound, you might be stunned to know that sounds and colors are related.
  • Archimedes' Principle of Flotation
    You must have seen huge ships sail on sea, or a hot air balloon rise high up in the air. But have you ever wondered how? Well, the answer to this can be found in the Archimedes principle of flotation and that's exactly what this article is all about. So, read on...
  • How to Find the Density of an Object
    If you are looking for guidelines on finding the density of an object from the knowledge of its total volume and mass, this article will be an insightful read. Here I shall present the density calculation formula and illustrate its usage with examples. Also provided is a density calculator which you will definitely find useful.
  • Torque Equation
    What is torque? What is the torque equation? This article explains in detail the concept of torque in rotational motion. Have a look.
  • Radial Acceleration
    This article gives you important details of radial acceleration, which is one of the two components of angular acceleration keeping an object in circular motion.
  • Sound Waves for Kids
    Here is an article on sound waves for kids which is entirely based on exciting facts and concepts about what these waves actually are. So stick on to it and enjoy your reading until the end.
  • Law of Inertia
    What is the law of inertia? How is the law connected with the definition of force? Read to find all the answers. . .
  • Proportional Limit
    What is proportional limit? How is it related to Hooke's law? Read to find the answers...
  • How Fast Does Light Travel
    One of the fascinating and equally interesting constants in Physics is the speed of light. Can anything in this Universe travel at a speed faster than that of the speed of light? Got curious? Keep reading to know more...
  • What is Acceleration
    If you are curious about what is acceleration and how it's related to force, you have landed on the right page. Read to know all about it.
  • What is the Difference Between Mass and Weight
    If you are curious about how mass and weight of an object differ, this article will be an insightful read. Here I'll explain how the two concepts of mass and weight are entirely different, though they are often confused to be the same.
  • What is Friction
    Understanding the concept of friction is essential to delve deeper into the intricacies of this fascinating science. In this article, we have discussed the basic concept of friction in detail.
  • Law of Conservation of Mass
    Like the conservation of energy, there is a law of conservation of mass as well. Read on to find some useful information regarding the same in the article mentioned below.
  • What is Mass
    Mass is a term most often interchanged with weight. However this is not correct. Learn about the correct usage and application of this term.
  • What is Plasma
    The word plasma has significant importance in both physics and biology, though the term in physics is derived from the term plasma in biology. Here, we shall try to shed some light on what is plasma, and how does the one in biology differ with the one in physics.
  • Coherent Light
    Coherent light is a form of light in which the electromagnetic waves maintain a set and predictable phase relationship with each other over a period of time. Read on to know more about coherent light.
  • Piezoelectric Effect
    In physics, piezoelectric effect is the vital link between the study of static and moving electric charges - electrostatics and the science of dynamics, motion and speed - mechanics. More information about the same has been presented below.
  • Curie Temperature
    Curie temperature or Curie point is the temperature at which a magnetic material tends to lose its permanent magnetism. Let us take a look at the topic in detail.
  • What is Ionization Potential
    How is ionization potential defined? Why does it affect the reactivity of any atom? Read to find all the answers. . .
  • Law Of Conservation of Energy
    Energy conservation laws define the essence of life and Universe. In this write up, a simple definition of law of conservation of energy has been provided.
  • Conservation of Mass
    If your ship has run aground in comprehending the simplicity (read it complexity) to know the relation between the conservation of mass and energy, here's a deal. By the time you reach the end of this brief excerpt, all your perturbations would have vanished.
  • Centrifugal Force
    What is centrifugal force? How can it be measured? What are the characteristics of centrifugal force? Let's find the answers to these and many other questions regarding this concept of physics.
  • Centripetal Force
    What is centripetal force? How is it calculated? What are the various aspects of centripetal force? Answer time, folks!
  • Time Dilation Explained
    The phenomenon of time dilation explained in this article is one of the most astounding effects of the physical world, predicted by special and general theory of relativity. In this article, you will find a simple explanation of time dilation which is caused by special relativistic and general relativistic effects.
  • Time Dilation Equation
    What is time dilation? What is the time dilation equation in special relativity? Read to know all about this special relativistic phenomenon.
  • Lorentz Contraction
    What is Lorentz contraction? What is its associated formula? Read on to find all the answers...
  • Examples of Convection
    Convection is one of the three modes of heat transfer, radiation and conduction being the other two. Find examples of convection in everyday life in this article and the basic science behind convection heat transfer...
  • Index of Refraction
    The ability to calculate the index of refraction of a medium, such as glass, helps us in making useful instruments. Read on, to know more about refraction in different materials.
  • Kinetic Molecular Theory
    Kinetic molecular theory has been used to describe the bulk properties of gases and how particles interact with each other. Here is some information about the same.
  • Physical Properties of Matter
    As everyone knows, matter is 'anything that has mass and occupies space'. Now, let's learn more about the physical properties of matter, its existence in various phases, and different matter activities.
  • Isothermal Process
    What is an isothermal process? What is work done in such a process? Read to get all the answers.
  • Constructive Interference
    If you want to know the meaning of constructive interference, then you have come to the right place. This article gives you some insights about sound waves and constructive interference. To know more, read on...
  • Conservation of Momentum Explained
    What is the conservation of momentum? How is it represented in an equation form? Read to get all the answers.
  • Voltmeter Vs. Ammeter
    If you are wondering what is the difference between voltmeter and ammeter, you need not look any further. The comparison that I present here will illuminate the major points of difference between these two electronic instruments.
  • Coefficient of Kinetic Friction
    What is kinetic friction coefficient? How is it calculated? Read to find all the answers.
  • Static Friction Vs. Kinetic Friction
    The static friction vs. kinetic friction comparison made in this article identifies the main points of difference between these two types of dry friction. Dry Friction in all its forms can be classified into these two main types. Read and understand the differences between static and dynamic friction.
  • Rotational Kinetic Energy
    If you understand kinetic energy, then you can easily interpret and understand rotational kinetic energy that is just a different case of the linear kinetic energy.
  • Static Friction Coefficient
    What is static friction coefficient? How is it computed? Read to find the answers.
  • Conservation of Mechanical Energy
    The principle of conservation of mechanical energy is a fundamental law in physics and forms the foundation of various other laws and interrelated concepts. Let us know more about this concept.
  • Instantaneous Velocity
    What is instantaneous velocity? What is its physical formula? This article has all the answers for you.
  • Potential Difference Explained
    If you want to understand what electric potential difference is, this article will be an interesting read. It is one of the most fundamental concepts that you should know. Read to get a hang of this fundamental concept in electrical science.
  • Thermodynamics Problems
    If you are looking for some tips on solving thermodynamics problems, this article may help you out.
  • How Does a Galvanometer Work
    If you are not quite able to figure out what a galvanometer is or how it works, this write-up will help you get a better understanding of the same. Continue reading....
  • What is Thermodynamic Equilibrium
    If you are clueless about what is thermodynamic equilibrium, reading this article will certainly be illuminating. Read to know all about it.
  • Thermal Equilibrium
    This term might sound heavy and mysterious to the layman, but thermal equilibrium is an important condition in thermodynamics. This concept has wide variety of applications in nature and the human body too.
  • How Do Airplanes Fly
    There exist some questions which are intricate, yet fascinating. One such question - how do airplanes fly has been a subject of fascination for laymen since the Wright Brothers took the first flight. If you are one of those people who are fascinated by this question, the following write-up will answer it for you.
  • List of Famous Physicists
    Looking for a list of famous physicists who helped answer the questions regarding the world around us? The following article is on famous physicists, who have helped the world understand the many concepts of the physical systems.
  • How Does Light Travel
    How does light travel? If this question has arisen in your mind, you are about to explore an enigma that has bamboozled some of the greatest minds ever. This article will reveal the mystery of how does light travel through space. It does not make for 'light' reading however.
  • Difference Between Mass and Weight
    Many students are confused about the difference between mass and weight. You need to know the difference to classify the properties of matter in an object. This article will help you with that.
  • Branches of Physics
    Physics is the most fundamental of all sciences and therefore, physics branches have evolved to understand every underlying aspect of the physical world. If you want to know, what are the branches of physics, you have landed on the right page. This article is an introduction to various physics branches. If you are thinking of making a career in physics, do read this article to get a bird's-eye view of this vast subject.
  • Wavelength of Visible Light Spectrum
    The subject matter of this article is the visible light spectrum and its limits, beyond which, electromagnetic waves become invisible. Read on to know all about it.
  • How do Transistors Work?
    Transistor is a semiconductor device. Transistors are used in almost all circuits and are used as switches and amplifiers. This article is meant for all those of you, who want to learn the working of a transistor.
  • Physics Formulas List
    Learning physics is all about applying concepts to solve problems. This article provides a comprehensive physics formulas list, that will act as a ready reference, when you are solving physics problems. You can even use this list, for a quick revision before an exam.
  • How Does a Diode Work?
    Different diodes are used for different purposes. However, the basic working of a diode still remains the same. It is a p-n junction semiconductor, that allows current to flow only in one direction. In this article, just how a diode works, is explained.
  • Types of Diodes
    Various types of diodes are available which enable different kinds of applications to be met. Diodes for high current and voltage, for small signal applications, light emission and detection, as well as for giving variable capacitance and low forward voltage drops are available today. Moreover, various types of diodes are used in microwave application...
  • How to Calibrate Hygrometer
    A hygrometer is a gauge used to estimate the level of humidity, inside the humidor at a pressure less than 1 atm. There are different methods to calibrate a hygrometer. To know more about them, read on.
  • Does the Fourth (4th) Dimension of Time Exist
    Time is the 4th dimension other than the three dimensions of space. It is different from the other dimensions in many ways. Time makes change possible or else we would be living in a static universe! Let us explore what we mean by time and how Einstein's special relativity dealt the fatal blow to 'absolute time' of Newtonian mechanics.
  • What is BHP (Brake Horsepower)
    Brake horsepower is the unit used for the calculation of an engine's capacity of doing work. Read on to know more...
  • What is Horsepower
    In simple words, the term horsepower can be defined as the amount of work completed in a specified amount or unit time.
  • What is Bose-Einstein Condensate
    Bose-Einstein Condensate (BEC) theory is named after its theorists, Satyendra Nath Bose and Albert Einstein. It is the effect of super cool temperatures on the state of matter. When the temperature goes a few billionth of a degree above absolute zero, certain elements exhibit Bose-Einstein condensation.
  • How does Sound Travel
    Sound is a form of wave, that travels through air in the same way as waves move through water. Read on to understand how does sound travel...
  • Boyle's Law
    Boyle's Law gives an important formula to calculate the effect of changing pressure on the volume of a gas, and vice versa. It was put forward by Robert Boyle in the 17th century and has proved very beneficial for scientists interested in the study of the properties of gases.
  • Ohm's Law
    Ohm's Law is known for its simplicity and usefulness in the field of electrical and electronic engineering. It applies to electric circuits and gives the relationship between three electrical quantities - current, voltage and resistance.
  • Basics of Quantum Mechanics for Dummies
    Next time when a Physics Professor says that the probability of your position at any given time, in the whole universe, is never zero, don't think he has lost his marbles. This is where we can start with the basics of Quantum Mechanics for dummies.
  • Basics of Quantum Physics
    Quantum physics encompass many basic principles regarding the nature of matter and energy. Here is some information about the basics of quantum physics.
  • Phases of Matter
    What are the different phases of matter? How are they related to each other? Read on to find out.
  • How Do You Find the Mass of an Object
    Mass can be defined as the amount of matter in an object to which its weight is proportional. Learn more about this law in physics and how it is applied in everyday life.
  • What is Gyroscopic Effect?
    What is a gyroscope? What is a gyroscopic effect? Read on to find the answers.
  • Angular Acceleration
    What is angular acceleration? How is it measured? Why is acceleration the most important parameter of motion theory? Read on to know it all.
  • Newton's Laws of Motion
    Newton's Laws of Motion are some of the fundamental laws of physics. They have significant scientific applications.
  • Semiconductor
    Semiconductor has been used to denote materials with a much higher conductivity than insulators, but a much lower conductivity than metals measured at room temperature. Today there are two more types of conductors: superconductors and semimetals...
  • Laser
    The laser is an optical apparatus that is used to produce a coherent and monochromatic beam of light. Find out more about it here.
  • How do Phase Converters Work
    Read on to know more about the different types of phase converters and how they work.
  • Types of Transfer Switches
    Read on to know more about electrical transfer switches and their two basic types - manual transfer switches and automatic transfer switches.
  • Thermocouple
    Know more about thermocouples, their functions and uses.
  • Vacuum Tube Applications
    Read on to know more about the history of vacuum tubes and their various uses and applications...
  • Water with Memory? Unbelievable Becomes Believable
    In 1988, Dr. Jacques Benveniste's published a paper in nature regarding the memory retention properties of water. This soon became a scientific controversy as the experiment by which Dr. Jacques Benveniste's group came to the conclusion opposed the natural laws of physics. Can a liquid when diluted 120 times still retain the properties of the original solution? A little more insight on this interesting argument.
  • Air Suspension System
    A suspension system in which air is the working fluid as well as the shock absorber is called air suspension system. The detection of causes and remedy for the problems with linked system are discussed here.
  • Suspension System: Spring, Shock And Other Components
    Suspension system for a vehicle is an integration of various machine components designed and assembled in such a manner to absorb all the shocks and vibrations.The design and objectives of suspension are mentioned in detail.
  • Applications and Development of Superconductivity
    High conductivity or zero resistance or superconductivity would ideally allow infinite current to pass through it. But at what cost? The hot topic of the 90's declined sharply after researchers from all over the world failed to find common use applications of this property of a few alloys. The story of superconductivity from its discovery to its current applications is discussed.
  • Why is Ice Slippery?
    It is assumed that a smooth surface is slippery while a rough surface is not. However this is not true with ice. Ice is slippery not due to its being smooth but because its melting point decreases when pressure increases. An explanation.
  • Why do Sharp Things Prick?
    "Don't go near that...It's sharp". All of us have heard it before. But, what is about sharp things that we are scared of? "It can cut and prick". Sure, but why? A scientific explanation.
  • Water pressure: Do ships stop sinking?
    This thought might have occurred to you. Water pressure, being such a tremendous force should be able to stop ships from sinking to the bottom of the ocean and leave them in an equilibrium state where they are balanced by equal pressures from all sides. Is it really true? Does theory and logic support this concept?
  • String Theory - featuring Bugs Funny and Chaffy Duck
    An overview of the String Theory - the proposed Theory of Everything. "Christ!" yelled Bugs Funny, munching on a flaming orange carrot, "what do they expect me to do next, stretch myself thinner into a string and wind myself into a loop?"
  • Electrokinetics: Overview, History and Theory
    Electrokinetics is the study of chemical reactions and molecular motion that can result (or cause) from the division of material into parts with properties that can induce an electric current between those parts. Such studies enable researchers to improve the design of electrochemical devices like batteries and processes like electro-synthesis.
  • Warm Water Vibrates for Longer Time
    Dutch researcher Arjan Lock has investigated the behavior of vibrating water molecules. Using ultra-short laser pulses, he has found that hydrogen atoms in water molecules vibrate for a longer period of time at higher temperatures contrary to the majority of substances in which a vibration lives shorter at higher temperatures.
  • Stealth Technology: Planes Moving Unseen
    Motion in stealth means avoiding all conventional means of detection. But with the advent of the radar in WW2, detection of planes and missiles became uncannily easy. How was one to avoid this type of electromagnetic detection? A brief look into radars and stealths.
  • Everything's Timing
    Like blood pumped at regular rates from our hearts keeps us working, our electronic appliance uses internal clocks for their regular functions. The nanoseconds to millisecond pulses keep our equipment synchronized. A look into the new technique developed to develop frequencies of 5-40 GHz integrated on chip
  • Teleporting 3-D by 2-D means
    A fax machine for a 3-D object!! Making use of the same principle in 2-D for 'teleportation' in 3-D. What exactly is teleportation? Is it seen in our day-to-day life or is it a reality only in fictional stories of Star TrekŪ? Is "Teleportation some type of Instantaneous (disembodied) transportation??" Instantaneous!!
  • Bottomless Pit and Speed-less Sound!!...What If?
    A description about what if a bottomless pit existed...where would it practically exist? What if the speed of sound currently at 340m/s suddenly decreases to 340mm/s?
  • Physics and Psychology!!!!
    How life connects physics and psychology??!!