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 educational and homework help physics articles for students and teachers focusing on elementary, middle and high school physics for kids. Herein you'll find physics articles and news on physics for physics students, scholars and educators, and professionals alike.
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. Look below for some 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 how to find 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 called sound waves for kids which is entirely based on exciting facts and concepts about what sound 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 of inertia connected with the definition of force? Read to find all the answers. . .

Proportional Limit
What is proportional limit? How is proportional limit 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. How fast does light travel? 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 is it related to force, you have landed on the right page. Read to know what is acceleration in physics, in a nutshell.

What is the Difference Between Mass and Weight
If you are curious about what is the difference between mass and weight of an object on Earth, 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. What is friction - this question has been discussed in this article, 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 what is mass and the correct usage and application of this term.

What is Plasma
In the following article, a brief description of the two different answers to the question 'what is plasma' have been given. Plasma has significant importance in both physics and biology. Here's a brief explanation...

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.

Ionization Potential
What is ionization potential? Why does ionization potential 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 special relativity time dilation equation? Read to know all about the special relativistic phenomenon of time dilation.

Lorentz Contraction
What is Lorentz contraction? What is the Lorentz contraction 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 index of refraction of different materials.

Isaac Newton's Laws of Motion
What are Isaac Newton's laws of motion? If that's the question on your mind, you have landed on the right page. Read to know all about Newton's three laws of motion, that define a causal mechanism to explain dynamics.

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 isothermal 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
What is the conservation of momentum? What is the conservation of momentum equation? 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 voltmeter vs ammeter comparison that I present here will illuminate the major points of difference between these two electronic instruments.

Kinetic Friction: Coefficient of Kinetic Friction
What is kinetic friction coefficient? How to calculate coefficient of kinetic friction? Read to get 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. Wondering how? Read further to delve deeper into this wonderful concept of rotational motion...

Static Friction: Coefficient of Static Friction
What is static friction coefficient? How to calculate coefficient of static friction? Read to get all 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. Here is a discussion about law of conservation of mechanical energy.

Instantaneous Velocity
What is instantaneous velocity? What is its physical formula? This article has all the answers for you.

Potential Difference
If you want to understand what is electric potential difference, this article will be an interesting read. Electric potential difference 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 how to solve thermodynamics problems, this article may help you out. Read to get an idea about how to crack thermodynamics problems.

Galvanometer - How it Works
If you are not quite able to figure out how does a galvanometer work, this article will make the concept clear for you by throwing some light on the working principle of a galvanometer.

Thermodynamic Equilibrium
If you are clueless about what is thermodynamic equilibrium, reading this article will certainly be illuminating. Read and get your concept of thermodynamic equilibrium clarified.

Thermal Equilibrium
This term might sound heavy and mysterious to the layman, but thermal equilibrium is an important condition in thermodynamics. Go through the following article to understand all about thermal equilibrium and its practical application.

How Do Airplanes Fly
There do exist some questions which are intricate, yet fascinating. One such intricate 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 these people who are trying to figure out how do planes fly, continue reading to get the answer.

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 list of 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. The difference between mass and weight is important to classify the properties of matter in an object. This article will try to solve the most common confusion in various minds, regarding the difference between mass and weight.

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 wavelength of visible light spectrum and its limits, beyond which, electromagnetic waves become invisible. Read on to know more about this visible part of the electromagnetic spectrum.

Transistors - How They Work
Transistor is a semiconductor device. Transistors are used in almost all circuits and are used as switches and amplifiers. This article on 'transistors - how they work' 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 physics formulas 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. Here, in this article, I will try to explain you how does a diode work?

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...

Hygrometer Calibration - 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 a unit used for the calculation of an engine's capacity of doing work. Read on to know what is BHP (brake horsepower).

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.

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.

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. Read this article to know how to calculate the mass of an object...

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 phase converters work.

Electrical Transfer Switch: Manual and Automatic 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...

Physics and Psychology!!!!
How life connects physics and psychology??!!

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
Suspension system that has air as its working fluid and acting as shock absorber is called air suspension system. The detection of causes and remedy for the problems with suspension 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. Various components of suspension system are also studied here.

SuperConductivity: - Still Resisting Change
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?

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 Trek®? 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?