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To find the temperature of a star based on the wavelength of maximum light emission, we can use Wien's displacement law, which states that the wavelength of maximum emission (( \lambda_{max} )) is inversely proportional to the temperature (T) in Kelvin. The formula is ( T = \frac{b}{\lambda_{max}} ), where ( b ) is Wien's displacement constant, approximately ( 2.898 \times 10^{-3} , \text{m} \cdot \text{K} ). For a wavelength of 800 nm (or ( 800 \times 10^{-9} ) m), the temperature is roughly ( T \approx \frac{2.898 \times 10^{-3}}{800 \times 10^{-9}} \approx 3622.5 , \text{K} ). Thus, the star has a temperature of about 3623 K.

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1d ago

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How determine surface temperature of a star?

The surface temperature of a star can be determined by analyzing its spectrum. Specifically, scientists can observe the peak wavelength of light emitted by the star and use Wien's Law, which relates the peak wavelength to the temperature of the emitting object. By measuring the peak wavelength, astronomers can calculate the surface temperature of the star.


What is the wavelength of a red star?

The wavelength of light emitted by a red star typically falls within a range of around 620 to 750 nanometers, corresponding to the red region of the visible spectrum. The exact wavelength can vary based on the star's temperature and composition.


What is the wavelength of light emitted from the surface of Betelgeuse?

The surface of Betelgeuse emits light across a broad range of wavelengths, including visible, infrared, and ultraviolet light. The dominant wavelength emitted by Betelgeuse is in the red region of the spectrum, specifically around 700 nanometers.


What characteristics do scientists measure to determine the temperature and composition of stars?

Scientists measure the brightness, color, and spectral lines of stars to determine their temperature and composition. By analyzing the light emitted by stars, scientists can infer important information about their properties. The temperature of a star is usually determined by examining the peak wavelength of its emitted light, while the spectral lines reveal the elements present in the star's atmosphere.


Is the color of star an effect of its temperature?

Yes. The apparent colour of a star is related to the peak wavelength of the light it emits. According to Wien's displacement law (look it up in Wikipedia) the peak wavelength is inversely proportional to the temperature. The higher the temperature, the shorter the peak wavelength. Wavelength decreases as one moves from red to blue in the visible spectrum, so a red star is cooler than a blue one.

Related Questions

What is the relationship between the wavelength of light and temperature in a given system?

The relationship between the wavelength of light and temperature in a given system is that as the temperature of the system increases, the wavelength of the light emitted by the system also increases. This is known as Wien's displacement law, which states that the peak wavelength of light emitted by an object is inversely proportional to its temperature.


A blackbody curve relates the wavelength of emitted light to?

the intensity of radiation emitted at that wavelength, giving a characteristic spectral distribution that depends only on the temperature of the object emitting the light.


If molybdenum is irradiated with light of a wavelength of 122 nm what is the maximum possible kinetic energy of the emitted electrons?

The maximum kinetic energy of the emitted electrons is calculated using the formula: (E_k = hf - \phi), where (h) is the Planck constant, (f) is the frequency of the light (speed of light/wavelength), and (\phi) is the work function of molybdenum. Given the wavelength, you can calculate the frequency, then use the work function value for molybdenum to find the maximum kinetic energy of the emitted electrons.


What is the emission wavelength equation used to calculate the specific wavelength of light emitted by a substance?

The emission wavelength equation used to calculate the specific wavelength of light emitted by a substance is c / , where represents the wavelength, c is the speed of light in a vacuum, and is the frequency of the light emitted.


What's the wavelength of the light emitted by the laser?

The wavelength of the light emitted by the laser is typically in the range of 400 to 700 nanometers.


How are temperature and wavelength of a glowing body related?

The temperature of a glowing body determines the peak wavelength of light emitted according to Wien's Law. As temperature increases, the peak wavelength decreases, meaning hotter objects emit more blue and cooler objects emit more red light.


Why is red light having maximum wavelength?

Because red light has minimum frequency and thus it has maximum wavelength.


How determine surface temperature of a star?

The surface temperature of a star can be determined by analyzing its spectrum. Specifically, scientists can observe the peak wavelength of light emitted by the star and use Wien's Law, which relates the peak wavelength to the temperature of the emitting object. By measuring the peak wavelength, astronomers can calculate the surface temperature of the star.


Which star will emit the shortest wavelength of its peak frequency?

The star emitting the shortest wavelength of its peak frequency will be a star with high temperature, such as a blue star. This is because the wavelength of light emitted by an object is inversely proportional to its temperature according to Wien's law.


What is the relationship between wavelengths and temperature?

There is a relationship between the temperature of an object and the wavelength at which the object produces the most light. When an object is hot, it emits more light at short wavelengths while an object emits more light at long wavelengths when it is cold. The amount of radiation emitted by an object at each wavelength depends on its temperature.


What happens to the light emitted by a heated object as its temperature increases?

Initially invisible infra red radiations. Then as temperature increases it becomes red. As still temperature increases it turns into yellow. When further increase happens, it starts giving out almost all colors including blue, violet and so it seems white hot. As an object is heated, it's maximum electromagnetic frequency increases. So you can measure the heat of an object by its emitted spectrum.


Does uv light emitted by a star have a wavelength that is longer than the visible light emitted by the star?

Ultra violet radiation has a shorter wavelength than visible light; this is true regardless of whether it is a star or any other source that is emitting it.