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Radiant heat (from the sun or electric fire) is infra red radiation and behaves like light, travelling in straight lines unless reflected of refracted. Conducted heat as in a metal wire is basically energy of thermal vibration and this energy is passes from atom to atom in the material.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoHeat is another type of electromagnetic radiation - towards the frequencies below the optical range. It will travel in straight lines in a vacuum; or in a medium of uniform refractive index; as seen at infrared frequencies.
As with other e-m radiation, not all i-r frequencies travel at equal velocities in various mediums.
Wiki User
∙ 13y agoThe evidence is that when there is a cloud in front of the earth heat doesn't go round it, heat tries to pass through it but the cloud reflects some of it.
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If you were to travel from the geographic south pole in a straight line in any direction in which direction would you travel northsoutheast or west?
If you travel along a line of longitude from the South Pole, you would travel directly northwards.
Does lightning travel in a straight line?
no it does not
What is the mosquito line?
the mosquito line is a line of heat that constricts the mosquitoes in one place
Why the newtons law of cooling is not valid for high temperature?
According to the Wikipedia article, a non-mathematical explanation of Newton's Law of Cooling is: "The rate of heat loss of a body is proportional to the temperature difference between the body and its surroundings."In other words, it is assumed that the rate of heat loss will increase linearly with temperature. This is basically correct if you consider only conduction; however, in the case of radiation, the radiation emitted by a body is proportional to the fourth power of the absolute temperature (for example, temperature measured in Kelvin). This will give you a curve, not a straight line; for small temperature intervals, you can approximate this with a straight line, but it will not be exact.
What type of energy does an element need to absorb to emit light?
Many different types of energy can do this. Heat will cause anything to emit blackbody radiation and if there is enough heat the blackbody radiation will overlap the visible light spectrum and the object will be incandescent. To emit light as a narrow spectral line requires raising electrons in the element to higher energy orbitals and allowing them to fall back, emitting photons. The type of energy that can do this can be of many sorts: light, chemical, electrical, etc.
Does light travel in a straight lineWhy?
Light travels in astraight line as it has the property known as the rectilinear prpogation of light.
What is squiggly line?
It is a line that twists and turns, not astraight line.
What is a radiation heat?
Radiation heat is heat that comes directly off its source in a straight line. For example heat coming off the sun.
What is an axe of symmetry?
the axes of symmetry of aline segment is astraight line perpendicular to the line segment from its midepoint
How do you know that you receive heat from the sun by thermal radiation and not by conduction or convection?
Heat by radiation travels in a straight line (line of sight) from a hot body to cold body with no intervening fluid or material needed for heat conveyance. Thus if the cold body isn't blocked off from the hot body it will receive heat from it by radiation. Convection requires a fluid for heat conveyance, which doesn't exist between the sun and earth. Conduction requires contact for heat transfer.
Vipers have heat sensitive?
Vipers have a line of heat sensitive pits, which detect Infra Red radiation given off by mammals. (their primary food source)
What is the major difference between conduction and radiation?
Conduction requires contact, radiation does not. Radiation in regards to thermodynamics is the straight line (line of sight) transfer of heat from a hot body to a cold body with no intervening fluid to convey that heat. Example: a flame will heat an object some distance from it by radiation as long as the transfer of heat is unobstructed. Place an object between the two and this flow of heat will stop. Conduction is the flow of heat between a hot body to a cold body by direct contact. Separate the two bodies and this flow of heat stops. Note: transfer of heat by an intervening fluid is convection. The hot body heats the fluid, then the fluid heats the cold body. All three forms of heat transfer occur in most practical heating applications.
Does infrared travels in streight lines?
All electromagnetic radiation travels in a straight line. The straight line may bend when the radiation crosses the boundary between different media, but it's still straight in each individual medium.
97 safari no rear heat but fan works?
The heat relay needs to be activated by a vaccum switch. On my van the fix was to replace the vaccum line to the relay which allowed the relay to allow heat to travel to the blower.
How does AC electricity travel?
Electrical energy can travel along a simple electrical circuit or along a transmission line, or by electromagnetic radiation. AC power usually refers to power at a single frequency, for example 50 Hz or 14 MHz. Power travelling along a transmission line loses a fixed proportion of its intensity per unit length of the line. By contrast, power travelling by electromagnetic radiation loses three quarters of its power density every time the distance is doubled. Therefore of the two methods electromagnetic radiaton can travel a lot further.
How is light and Radiation connected?
Light is a form of radiation. Radiation is an emanation of energy from a body, that can pass through a vacuum unaffected. it travels in a straight line, and is only slightly affected by gravity. A black hole obviously will, with its massive gravity well, affect all forms of light and radiation. Heat, light particles (photons) and radiation particles (alpha, beta, and gamma) are all forms of radiation, among other more exotic forms.
What is an absorption line?
An absorption line is a line which corresponds to the absorption of electromagnetic radiation at a specific wavelength.
