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Category: Easy Definition of Physics

What is a Lens?

physics

What is a Lens? A lens is a transparent curved device that is used to refract light. A lens is usually made from glass. There are two different shapes for lenses. They are called convex and concave. What is a Convex Lens? A convex lens is thicker in the middle and thinner at the edges. […]

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Types of Lenses

physics

Lenses Lenses are one of the most important devices in optics. Lenses are used is many applications requiring the manipulation of light waves. Lenses work by refractinglight waves in a particular manner denoted by the construction of the lens itself. Different type of lenses will either refract light to a point, called a Focus Point, […]

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Definition of Faraday’s Laws

physics

Faraday’s Laws Faraday’s laws of electrolysis relate the amount of liberated mass at an electrode to the quantity of electricity passing through the electrode. In an electrolytic cell, metal at an electrode’s surface is dissolved into an electrolyte or deposited on an electrode by the application of electricity. Faraday’s first law states that the amount […]

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coulomb’s law with math

physics

The interaction between charged objects is a non-contact force that acts over some distance of separation. Charge, charge and distance. Every electrical interaction involves a force that highlights the importance of these three variables. Whether it is a plastic golf tube attracting paper bits, two like-charged balloons repelling or a charged Styrofoam plate interacting with […]

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What is Ohm’s Law? – Definition Mathematical Representation

physics

  Ohm’s Law is the mathematical relationship among electric current, resistance, and voltage. The principle is named after the German scientist Georg Simon Ohm. In direct-current (DC) circuits, Ohm’s Law is simple and linear. Suppose a resistance having a value of R ohms carries a current of I amperes. Then the voltage across the resistor […]

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electricity | Definition, Facts, & Types

physics

Electricity, phenomenon associated with stationary or moving electric charges. Electric charge is a fundamental property of matter and is borne by elementary particles. In electricity the particle involved is the electron, which carries a charge designated, by convention, as negative. Thus, the various manifestations of electricity are the result of the accumulation or motion of […]

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Thermal Resistance & Thermal Conductance

Thermal Resistance & Thermal Conductance Introduction Thermal resistance (R) and thermal conductance (C) of the materials are reciprocals of one another and can be derived from thermal conductivity (k) and the thickness of the materials. The C-Therm TCi™ measures thermal conductivity and, therefore, paves the way to determine thermal resistance and thermal conductance. k-value – […]

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THERMAL CONDUCTIVITY

Thermal conduction is the transfer of heat from hotter to cooler parts of a body resulting in equalizing of temperature. In contrast to heat transfer by convection, thermal conduction has nothing to do with macroscopic displacements in the body, but is a result of a direct energy transfer between particles, such as molecules, atoms, and […]

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Thermal Conductivity Formula

physics

Thermal Conductivity Formula Every object has its own capacity to conduct heat.  To determine how much it is we use this term. Thermal conductivity (λ or k) is the capacity of the body to conduct or spread heat. Where, thermal conductivity is k in W/m K, the amount of heat transfer through the material is Q in J/S or W, the […]

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How is heat transferred? Conduction — Convection — Radiation

physics

What is Heat? All matter is made up of molecules and atoms. These atoms are always in different types of motion (translation, rotational, vibrational). The motion of atoms and molecules creates heat or thermal energy. All matter has this thermal energy. The more motion the atoms or molecules have the more heat or thermal energy […]

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Measuring Temperature on Two Scales

physics

Temperature Scales Learning Objective(s) State the freezing and boiling points of water on the Celsius and Fahrenheit temperature scales. Convert from one temperature scale to the other, using conversion formulas.   Introduction   Turn on the television any morning and you will see meteorologists talking about the day’s weather forecast. In addition to telling you […]

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Temperature definition physics

physics

Temperature definition physics Heat and Temperature Heat is the form of energy that is transferred between two substances at different temperatures. The direction of energy flow is from the substance of higher temperature to the substance of lower temperature. Heat is measured in units of energy, usually calories or joules. Heat and temperature are often […]

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heat definition physics

physics

Heat and Temperature Heat is the form of energy that is transferred between two substances at different temperatures. The direction of energy flow is from the substance of higher temperature to the substance of lower temperature. Heat is measured in units of energy, usually calories or joules. Heat and temperature are often used interchangeably, but […]

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