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Why does radiation usually transfer through a gas more easily than through solids or liquids?
Wiki User
∙ 14y ago
Gas is much less dense than liquids or solids, which means that it has fewer particles (the particles generally being atoms or molecules) per unit volume, than there are in the denser materials. Hence, if something is travelling through a gas it is not going to hit as many particles a it would if it were travelling through a liquid or solid. And any time a photon hits another particle, it may be absorbed, or reflected, or defelcted in some manner by that particle.
Wiki User
∙ 14y ago
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Energy is usually transferred in fluids by radiation true or false?
False radiation is the transfer of energy through space.
State and discuss the modes transfer of heat?
The modes of transfer of heat are: # Conduction # Convection # Radiation In Conduction, heat is transferred along the material by the vibration of molecules. The molecules, however, don't actually move from their positions. It is usually seen in solids only. Heat transfer in Convection is by actual movement of material molecules. It is seen in liquids and gases. Radiation is the mode of transfer which does not need any material medium. The transfer of heat is done by electromagnetic waves.
How is heat transferred through empty space?
Light energy, like from the sun.
What is heat conduction?
in heat transfer, conduction (or heat conduction) is the transfer of heat energy by microscopic diffusion and collisions of particles or quasi-particles within a body due to atemperature gradient. The microscopically diffusing and colliding objects include molecules, electrons, atoms, and phonons. They transfer microscopically disorganized kinetic energy. Conduction takes place in all forms of ponderable matter, such as solids, liquids, gases and plasmas.By conduction, as well as by thermal radiation, heat spontaneously flows from a body at a higher temperature to a body at a lower temperature. In the absence of external driving fluxes, temperature differences, over time, approach thermal equilibrium.During conduction, the heat flows through the body itself, as opposed to its transfer by the bulk motion of the matter as in convection, and by thermal radiation. In solids, it is due to the combination of vibrations of the molecules in a lattice or phonons and diffusion of free electrons. In gases and liquids, conduction is due to the collisions and diffusion of the molecules during their random motion. Photons in this context do not collide with one another, and heat transport by electromagnetic radiation is conceptually distinct from heat conduction by microscopic diffusion and collisions of material particles and phonons. In condensed matter, such as a solid or liquid, the distinction between conduction and radiative transfer of heat is clear in physical concept, but it is often not phenomenologically clear, unless the material is semi-transparent. In a gas the distinction is both conceptually and phenomenologically clear.In the engineering sciences, heat transfer includes the processes of thermal radiation, convection, and sometimes mass transfer. Usually more than one of these processes occurs in a given situation. The conventional symbol for the material property, thermal conductivity, is .
Through what medium does light travel?
Light travels through a vacuum, and through the densest metals (though not usually very far). But then gamma radiation and radio waves are examples of light...
Energy is usually transferred in fluids by radiation true or false?
False radiation is the transfer of energy through space.
State and discuss the modes transfer of heat?
The modes of transfer of heat are: # Conduction # Convection # Radiation In Conduction, heat is transferred along the material by the vibration of molecules. The molecules, however, don't actually move from their positions. It is usually seen in solids only. Heat transfer in Convection is by actual movement of material molecules. It is seen in liquids and gases. Radiation is the mode of transfer which does not need any material medium. The transfer of heat is done by electromagnetic waves.
What states of matter do convection currents transfer heat?
usually gases, but sometimes liquids
What is electromagnetic waves that transfer heat?
Heat is usually transferred by infrared radiation.
To transfer small measured amounts of liquids in the laboratory what do scientist use?
An Eppendorf pipette is usually used.
How is heat energy usually transmitted through liquids and gases?
Heat energy is usually transmitted through liquids and gases by convection (warmer, less dense material rises, and sinks again when it cools).
Why do you not need a substance for heat transfer?
Any object emits electromagnetic radiation (heat radiation, usually infrared), according to its temperature. This can travel in empty space.
Expian the 3 types of heat transfer?
Radiation- transfer of heat through air, or space. Infrared waves are usually the medium in which radiation occurs. think of the sun heating the earth from 93 million miles away. Conduction- transfer of heat by direct contact between 2 solid conductors. think of a stove heating a pan. When you touch the pan, your hand absorbs heat from the pot. Convection- transfer of heat through convection currents, circular currents that move a fluid to and away from a heat source. think of noodles in a pan.
Gases form of Liquid or solid substances?
Usually of liquids through the process of evaporation.
What is transfer of thermal energy from one substance to another?
This is heating and cooling. Direct transfer from one solid to another is conduction. Transferring through fluids (liquids or gases) normally uses convection. and heat being projected through a space, usually as light or infra-red, is radiation.Heat is the term that defines something that transfers thermal energy efficiently.
Does radiation move faster through a gas than a solid or liquid?
Usually.
How can electricity be transfered?
Electricitiy can be transfered through radiation.
