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A filament, such as that found in incandescent light bulbs, is luminous when it is heated to a high temperature, causing it to emit visible light. The filament itself is not inherently luminous at lower temperatures; it only becomes so when electrical current passes through it, generating heat and resulting in incandescence. Thus, while a filament can be luminous, it depends on the conditions under which it is used.
What else can I help you with?
Is a volcano erupting luminous or non luminous?
It is luminous
Are glow in the dark objects luminous or illuminated?
Luminous.
Is table luminous or non luminous?
It's non-luminous
What are 2 examples of luminous light?
Two examples of luminous light are the sun and a light bulb. The sun emits its own light through nuclear fusion, providing natural illumination to the Earth. A light bulb, on the other hand, generates light through the electrical energy passing through a filament or gas, creating artificial light for various applications.
Is a table non luminous?
Some tables may be painted with luminous paint. Most are not luminous.
Name two objects which are non-luminous at room temperature but can be made luminous when heated?
-- the filament in an incandescent light bulb-- the coils in a bread toaster
Is an ordinary frosted incandescent bulb a luminous or an illuminated source?
An ordinary frosted incandescent bulb is a luminous source because it produces light through its own incandescent filament. It does not rely on external light sources to produce light.
What is color of the filament as you turn the switch at full power?
As you turn the switch to full power, the filament typically glows a bright white or yellowish-white color. This occurs due to the increase in temperature, which causes the filament to emit visible light. The exact hue may vary depending on the type of filament and its material, but it generally becomes more luminous and intense at higher power levels.
Is the temperature of a luminous flame greater ot less than that of a nonluminous flame?
The yellow color in a luminous flame is basically the black-body emission from hot particles of soot in the flame. they are hot, and they glow like the filament of a light bulb. In a blue flame, there are no particles of soot to give that incandescent radiation. Instead, the main color you see is blue emission from the high-energy C2 molecule.
Why should the filament of bulbs be thermally isolated?
Energy, in the form of electricity, causes the filament to heat up and give off light. Any energy which the filament loses by heating the bulb does not create light, and so is wasted. Thermal isolation minimizes the heat loss of the filament, and therefore reduces wasted energy.
Why are fluorescent lamps brighter than filament light bulbs?
Fluorescent lamps are brighter than filament light bulbs because they produce light by exciting mercury vapor and phosphor coating, which emits more visible light compared to the incandescent process of heating a filament wire to produce light. Additionally, fluorescent lamps are more energy-efficient and have a higher luminous efficacy, meaning they produce more light for the amount of energy consumed compared to filament light bulbs.
Is a volcano erupting luminous or non luminous?
It is luminous
Are light bulbs nonluminous?
Yes, light bulbs themselves are considered nonluminous because they do not produce light on their own. They require electricity to pass through a filament, which then emits light, making the bulb appear luminous.
Are glow in the dark objects luminous or illuminated?
Luminous.
Is table luminous or non luminous?
It's non-luminous
What supports the anther?
The Filament
What are 2 examples of luminous light?
Two examples of luminous light are the sun and a light bulb. The sun emits its own light through nuclear fusion, providing natural illumination to the Earth. A light bulb, on the other hand, generates light through the electrical energy passing through a filament or gas, creating artificial light for various applications.
