Indication of high temperature; appearance, condition, or color of a body, as indicating its temperature; redness; high color; flush; degree of temperature to which something is heated, as indicated by appearance, condition, or otherwise.
A measure of a quantity of energy; of how much energy a sample contains.
If a temperature difference exists between two points heat will flow from the point at the higher temperature to the point at the lower temperature. This flow will continue until equilibrium has been reached. more...... See also: Colour Temperatures. Search for thermodynamics books on Amazon.co.uk
is energy transferred because of a temperature difference. There is no transfer of mass.
Form of kinetic energy that flows from one body to another when there is a temperature difference between the two bodies. Heat always flows spontaneously from a hot sample of matter to a colder sample of matter. This is one way to state the second law of thermodynamics. See temperature.
heat energy: the energy that is transferred from one object to another because of a temperature difference; the form of energy due to motion of particles.
This is a form of energy that is transferred between two systems due to a difference in temperature.
A form of energy caused by the movement/vibration of molecules
form of energy transferred by means of a temperature difference.
a form of energy that spontaneously flows from a warm body to a cold body.
A measure of energy in terms of quantity.
energy which is transferred due solely to a temperature difference
A form of energy associated with the random motion of the elementary particles in matter.
the energy an object has because of the movement of its atoms and molecules
Compare with work, energy, enthalpy, and temperature. Heat is a transfer of energy that occurs when objects with different temperatures are placed into contact. Heat is a process, not a property of a material.
a form of energy produced by the motion of the particles in the matter
The internal energy of a body (substance).
Basic form of energy that may be partially converted into other forms of energy.
A form of energy transferred from one body to another because of a difference in temperatures.
The total kinetic energy of all the atoms in a substance.
Energy that causes molecules to be in motion and to raise the temperature of a substance.
the sensation caused by heat energy
the result of the collision between atoms in a substance
the flow of energy from hot to cold objects.
energy that can be transferred as a result of temperature differences
Disorganized energy caused by the rapid vibration of the atoms and molecules in matter.
A slight burning sensation in the mouth produced by a high alcohol level. Not good. The alcohol levels in many 'blockbuster'-styled wines has been creeping up from around 12% to upwards of 15% and higher.
Heat is the energy of moving molecules.
A form of kinetic energy Heat is the average vibrational state of matter, with hotter matial having higher vibrational states.
The energy contained in an object which is dependent on temperature, mass and substance (material) average.
energy of the motion of particles in a body
A vibratory form of energy, perceptible to human beings as the sensations to which the names cold, cool, warm, hot, and similar terms are applied.
A process, by which the internal energy of a system can be changed. At the same time, may, but must not, be changed, too
A form of energy that raises temperature. It is measured by how much work it does. (see British Thermal Unit, Calorie)
Energy transferred between material bodies as a result of a temperature difference between them.
the total kinetic energy of all of the particles of a substance
The energy that flows into or out of system because of a difference in temperature.
A form of energy associated with the motion of atoms or molecules which is capable of being transmitted through solid and fluid media by conduction, through fluid media by convection, and through empty space by radiation.
form of energy transferred between two bodies at different temperatures
sinking – A means of removing heat from a power handling electronic device using finned radiators or metal to metal thermal conduction.
The transfer of (thermal) energy between two objects that are at different temperatures.
Temperatures higher than that of the normal atmosphere, produced by the process of burning or oxidation.
A transfer of thermal energy. We donâ€(tm)t speak about systems “having†heat, but about their “transferring†heat, much in the way that dynamical systems donâ€(tm)t “have†work, but rather “do†work.
A high temperature, the sensation produced by proximity to fire or an incandescent object, as opposed to cold.
A form of energy, the addition of which causes substances to increase in temperature.(Added: 12-Sep-1999 Rating: 0 Votes: 0)
A mode of energy associated with and proportional to molecular motion that may be transferred from one body to another by conduction, convection or radiation.
a form of energy that causes the sensation of feeling hot or warm
The total amount of kinetic energy due to molecular motion in a body of matter. Heat is energy in its most random form. heat of vaporization The amount of heat required to change a given amount of a liquid into a gas; 540 calories are required to change 1 gram of liquid water into vapor. heat-shock protein A protein that helps protect other proteins during heat stress, found in plants, animals, and microorganisms. helper T cell (T) A type of T cell that is required by some B cells to help them make antibodies or that helps other T cells respond to antigens or secrete lymphokines or interleukins. heme[Gk. haima, blood] The iron-containing group of heme proteins such as hemoglobin and the cytochromes.
A form of thermal energy resulting from combustion, chemical reaction, friction, or movement of electricity. As a thermodynamic condition, heat, at a constant pressure, is equal to internal or intrinsic energy plus pressure times volume.
Physical energy produced from combustion, friction, electrical or chemical action. The total quantity of kinetic energy of an object, not the "temperature." An example is two objects of the same material, but different sizes, at the same temperature; the larger object has more heat.
Energy possessed by a system due to the kinetic energy of its atoms or molecules.
The kinetic energy of motion of particles in a solid, liquid or gas measured on the temperature scale.
A sample of matter that has more energy than another has a greater temperature, which results in warmth.
The energy that an object has because of its temperature. Heat is different from temperature (q.v.) because an object with twice as much mass requires twice as much heat to increase its temperature by the same amount. There is a further distinction in the terminology, not emphasized in this book, between heat and thermal energy. See the entry under thermal energy for a discussion of this distinction.
A form of energy characterized by vibration of molecules and capable of initiating and supporting chemical changes and changes of state.
The energy of a material due to the random motion of its particles. The word "heat" is used when energy is transferred from one substance to another.
Heat is a form of energy associated with and proportional to molecular motion. It can be transferred from one body to another by radiation, conduction, or convection.
Thermal energy. Heat is expressed in units of calories or BTU's.
A physical form of energy generated by combustion, chemical action or friction and measured by calories or B.T.U.Õs
The vibration of molecules, energy, can change the substance of a chemical. heat line A distinct line along a wall or ceiling representing areas effected by heat. heat quantity Common unit of measure of the quantity of heat is the British Thermal Unit (Btu).
The quantity of energy transferred from one object to another because of the difference of temperature. A Miami sports team.
a form of energy transferred between objects or systems as a result of a difference in temperature; not the same as temperature
You can usually warm something by adding energy. The added energy can be from light, electricity, friction, a chemical reaction, nuclear reaction, or any other kind of energy. When first added to a substance, energy might be concentrated in one atom, but this one will soon bump into others and spread the energy. Eventually, every atom or molecule in the substance will move a bit faster. When the added energy is spread throughout a substance, it is then called heat energy, thermal energy, or, simply heat. All three terms mean the same thing. Heat is a form of energy, so it has the units of energy. In the SI system, this is Joules (J). Many other units to measure thermal energy are in common use. Calories and BTU's are common heat units.
Term used colloquially to indicate any temperature above ambient (room) temperature, to which a part or material is or will be subjected.
movement of molecules or atoms.
the movement of energy from one substance to another; also called thermal energy
It is a form of energy. Its unit is Calorie. It is related to temperature by Heat = mass x specific heat x temperature difference.
Heat, like work, is a measure of the amount of energy transferred from one body to another because of the temperature difference between those bodies. Heat is not energy possessed by a body. We should not speak of the "heat in a body." The energy a body possesses due to its temperature is a different thing, called internal thermal energy. The misuse of this word probably dates back to the 18th century when it was still thought that bodies undergoing thermal processes exchanged a substance, called caloric or phlogiston, a substance later called heat
The energy associated with the random motions of the molecules, atoms, or smaller structural units of which matter is composed.
Thermal energy present in a body as agitation (motion) among its particles (atoms or molecules).
the kinetic energy transferred from a hotter object to a colder object when the two are in contact
The transfer of energy from one object (or substance) to another. Heat has the same units as energy (Joules, in SI units).
Total kinetic energy of all the randomly moving atoms, ions, or molecules within a given substance, excluding the overall motion of the whole object. Heat always flows spontaneously from a hot sample of matter to a colder sample of matter. This is one way to state the second law of thermodynamics. Compare temperature.
A form of energy that flows between two samples of matter because of their differences in temperature.
Energy that flows between bodies because of a difference in temperature; same as thermal energy.
As defined in thermodynamics, heat is the energy that flows between two systems as a result of temperature differences
The transfer of thermal energy from a body at higher temperature to one at lower temperature.
The transfer of energy from one object at a higher temperature to another object at a lower temperature. Heat can be transferred by conduction, convection, or radiation. Although technically incorrect, the word heat is often used to mean "thermal energy." See Thermal energy.
The energy or sensation that humans associate with infrared radiation.
Formally, the amount of energy that flows between a system and its environment by virtue of a temperature difference that exists between them. In meteorology, the formal definition usually holds, where the "system" is a parcel of air, and the "environment" is the atmosphere surrounding the parcel.
Heat is a form of energy. It is related to the molecular motion or vibration. HEAT EXCHANGER: Device used to transfer heat from a warm or hot surface to a cold or cooler surface. Evaporators and condensers are heat exchangers.
the process of energy transfer from one body or system to another as a result of difference in temperature.
The form of energy that is transferred by virtue of a temperature difference.
Heat is the amount of thermal energy contained in an object, not the temperature. Ice and a cold metal cube with the same temperature will have different amounts of heat in them. A metal cube does not hold as much heat for a given temperature as water.
the transfer of thermal energy from one substance to another
A form of energy. The least organized form of energy. The form of energy into which other forms deteriorate.
form of internal energy possessed by a substance by virtue of the kinetic energy in the motion of its molecules or atoms. Heat energy is transferred by conduction, convection and radiation.
A form of energy transferred between systems (flux) by virtue of their temperature differences.
A form of energy that acts on a substance to cause a rise in its temperature.
1. (Or heat content.) A form of energy transferred between systems, existing only in the process of transfer. 2. Same as enthalpy. Heat, used as a noun, is confusing and controversial in its scientific meaning. The differential of heat is considered imperfect in that its value depends on the process applied. In the thermodynamic definitions in this glossary, heat is avoided as a noun or adjective except where required by established use. The process of heating is, however, defined as the net absorption of internal energy by a system.
Thermal energy resulting from the movement of molecules.
A measure of the total internal energy of a substance that can be increased or decreased when objects with different temperatures are placed into contact. Heat is a process, not a property of a material.
energy in transit; specifically field particle movement, exchange, or transfer.
energy transferred between two objects because of a temperature difference between them.
A form of energy transferred between two systems by virtue of a difference in temperature. The first law of thermodynamics demonstrated that the heat absorbed by a system may be used by the system to do work or to raise its internal energy.
In physics, heat, symbolized by Q, is defined as energy in transit. Generally, heat is a form of energy transfer associated with the different motions of atoms, molecules and other particles that comprise matter when it is hot and when it is cold. High temperature bodies, which often result in high heat transfer, can be created by chemical reactions (such as burning), nuclear reactions (such as fusion taking place inside the Sun), electromagnetic dissipation (as in electric stoves), or mechanical dissipation (such as friction).