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What material lines the tubes of fluorescent lights and glows to UV Light?
Phosphor coating lines the inside of fluorescent light tubes. When the gas inside the tube is excited by electrical current, it emits ultraviolet (UV) light. The phosphor coating then absorbs the UV light and re-emits it as visible light, creating the glow from the fluorescent light.
How do the emission spectra for hydrogen and helium differ from each other?
The emission spectra for hydrogen and helium differ in the specific wavelengths of light they emit. Hydrogen emits light in distinct lines corresponding to transitions of its electrons between energy levels, while helium emits a continuous spectrum of light.
Is a light bulb a reversible change?
No, a light bulb is not a reversible change. When the filament inside the light bulb heats up and emits light, it undergoes a chemical change and cannot be easily reversed.
What element was used in incandescent lamps?
Incandescent light bulbs use a tungsten filament as the element that emits light when heated by an electric current.
What is the difference between a chromophore and a fluorophore in terms of their light-absorbing and light-emitting properties?
A chromophore absorbs light, giving color to a molecule, while a fluorophore absorbs and then emits light, producing fluorescence.
What is a neutron star which emits that reaches the earth as radio wave and flashes of vesible light?
The neutron star emitting radio waves and visible light is likely a pulsar. Pulsars are highly magnetized, rotating neutron stars that emit beams of electromagnetic radiation from their magnetic poles. As the pulsar rotates, these beams sweep across our line of sight, causing periodic flashes of light and radio waves to be observed from Earth.
What is a neutron star which emits radiation that reaches the Earth As radio waves and flashes of light?
pulsar
What is a neutron star which emits radiation that reaches the earth as radio waves and flashes of visible light?
pulsar
Why is daytime light and night dark?
Daytime is light because the sun emits light that reaches our atmosphere and illuminates the Earth's surface. Night is dark because the Earth rotates and moves away from the direct sunlight, causing the absence of light reaching the surface.
Are all neutron stars pulsars?
No, not all neutron stars are pulsars. Pulsars are a type of neutron star that emits beams of radiation, which can be detected as pulses of light. Some neutron stars do not emit these beams and are not classified as pulsars.
Does a star hold light?
No, it only emits light. The heat gets radiated away as light.No, it only emits light. The heat gets radiated away as light.No, it only emits light. The heat gets radiated away as light.No, it only emits light. The heat gets radiated away as light.
Is a pulsar star like a light house or helicopter?
You might think of a pulsar as very vaguely similar to a lighthouse. A pulsar is a small, rapidly spinning neutron star; flashing at a rate of 4 to 6 flashes per second, they are so precisely regular that when radio astronomers first discovered them, the astronomers couldn't imagine a natural explanation and named them "LGM signals" - for "little green men". They might be, the suggestion went, some form of interstellar navigational beacon.
Is a type of chemical when exposed to radiation emits visible light?
is a type of chemical when exposed to radiation emits visible light.
How does the sun emit light?
the photoshpere emits visible light
How are rotating neutron stars able to produce pulses of radiation as seen by an observer on Earth?
Neutron stars are able to produce pulses of radiation because they are rotating, and only a certain place on the neutron star releases the radiation(just like how light comes out of a flashlight). As the neutron star rotates, the point on the neutron star also moves along. When it points toward the Earth, we see the pulse.
Is the light from an incandescent lamp monochromatic?
No, an incandescent bulb i.e. a bulb that emits light by the generation of heat, emits white light and is therefore not monochromatic. For a source to be monochromatic, the light emitted must be of a single wavelength.
What produces pulsars?
Pulsars are produced from the remnants of massive stars that have undergone supernova explosions. When these stars collapse, they form neutron stars, which are incredibly dense and possess strong magnetic fields. As the star rotates, the misalignment of its magnetic axis with its rotation axis emits beams of radiation, which can be detected as regular pulses of light or radio waves when they sweep past Earth. This phenomenon results in the characteristic pulsing behavior of pulsars.
