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If the radiation emitted from a star has a maximum intensity at a wavelength of NM what is the temperature of the star?
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The wavelength of the radiation emitted by a body depends upon?
Temperature and emissivity of the body.
How many electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent?
5 electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent.
Does the intensity of infrared waves emitted by the Sun change as the wavelength of the ultraviolet waves increases?
yes
A blackbody curve relates the wavelength of emitted light to?
The temperature of the object.
What is the violet shift?
a decrease in the wavelength of radiation emitted by a celestial body as a consequence of the doppler effect
The wavelength of the radiation emitted by a body depends upon?
Temperature and emissivity of the body.
How many electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent?
5 electrons are emitted when calcium is flashed with light of wavelength 340 nm and intensity of 50 percent.
What best describes the primary wavelength of radiation emitted by Earth's surface?
they are longer than those emitted by the sun.
How are colors produced and why?
Colours are produced when electromagnetic radiation is emitted. The precise colour will depend on the wavelength of the radiation.
What is the unit of fluorescence intensity?
The unit of fluorescence intensity is known as FUs. These are unitless and instead shows the light that is emitted from the longer wavelength.
Can infrared be generated on earth?
Infrared radiation is emitted by almost everything on Earth because almost everything is a temperature that will emit at that wavelength. Even you are emitting in the infrared.
Does the intensity of infrared waves emitted by the Sun change as the wavelength of the ultraviolet waves increases?
yes
The wavelengths of thermal infrared emitted by the Earth are?
The Earth emits thermal radiation of a much lower intensity in the infrared rather than visible region . The wavelength of infrared rays is around 10^-6 meter.
A blackbody curve relates the wavelength of emitted light to?
The temperature of the object.
What is the violet shift?
a decrease in the wavelength of radiation emitted by a celestial body as a consequence of the doppler effect
In classical physics how does an atomic oscillator behave when heated in terms of energy emissions?
The oscillator starts at relatively low frequency and emits electromagnetic radiation of relatively low frequency (or long wavelength) and low intensity. As the heating continues, the frequency of oscillation also increases as does the frequency of the emitted radiation and the intensity of the radiation. A graph of intensity vs. wavelength would start high on the left (at short wavelengths) and fall off to the right exponentially to low intensity at long wavelengths. This graph would be at odds with the experimentally established graph of intensity vs. wavelength(which shows low intensity at short wavelengths) because the classical assumption that frequency of oscillation can increase continuously as the oscillators are heated is not correct. Frequency of oscillation can increase only in integral multiples of the fundamenal frequency.
What form of electromagnetic radiation is emitted by low temperature objects like the human body?
Infrared radiation is invisible to us and emitted by the human body.
