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A blackbody spectrum is the radiation emitted by an object that absorbs all incoming light and radiates it back. The spectrum shows a continuous range of wavelengths with a characteristic shape that depends only on the object's temperature. This type of spectrum is an idealization used to understand and describe the behavior of objects in thermal equilibrium.
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What does a blackbody spectrum look like?
A blackbody spectrum is smooth and continuous, showing a peak intensity at a specific wavelength that shifts to shorter wavelengths as temperature increases. It has a characteristic shape with most of the emitted radiation concentrated at shorter wavelengths.
Which type of spectrum is associated with the radiation of most stars?
Most stars exhibit a continuous spectrum, which contains all wavelengths of light in a continuous distribution. This is often referred to as a blackbody spectrum due to its smooth curve.
What did planck assume in order to explain the experimental data for blackbody radiation?
Max Planck assumed that the energy emitted by oscillators in a blackbody is quantized, meaning it can only take on discrete values, in order to explain the experimental data for blackbody radiation. This assumption led to the development of the famous Planck's law, which accurately described the spectrum of radiation emitted by a blackbody.
What is the lowest temperature that will cause a blackbody to emit radiation that peaks in the infrared?
The temperature at which a blackbody radiates primarily in the infrared region is around 300 K (27°C). At this temperature, the peak of the blackbody radiation curve falls within the infrared spectrum.
What was the purpose of the blackbody radiation experiment?
The purpose of the blackbody radiation experiment was to study the spectrum of light emitted by a perfect absorber of radiation at different temperatures. This experiment helped to confirm the existence of quantized energy levels in atoms and provided important insights into the behavior of electromagnetic radiation.
What does a blackbody spectrum look like?
A blackbody spectrum is smooth and continuous, showing a peak intensity at a specific wavelength that shifts to shorter wavelengths as temperature increases. It has a characteristic shape with most of the emitted radiation concentrated at shorter wavelengths.
Which type of spectrum is associated with the radiation of most stars?
Most stars exhibit a continuous spectrum, which contains all wavelengths of light in a continuous distribution. This is often referred to as a blackbody spectrum due to its smooth curve.
What did planck assume in order to explain the experimental data for blackbody radiation?
Max Planck assumed that the energy emitted by oscillators in a blackbody is quantized, meaning it can only take on discrete values, in order to explain the experimental data for blackbody radiation. This assumption led to the development of the famous Planck's law, which accurately described the spectrum of radiation emitted by a blackbody.
What is true of a blackbody?
A blackbody is an idealized object that absorbs all electromagnetic radiation incident on it and re-emits it. It emits radiation in a continuous spectrum that depends only on its temperature. A blackbody also serves as a useful standard for understanding and comparing the emission of real objects.
Why do hot star appear blue in color?
Because the peak of their blackbody curve is near blue in the spectrum, for the temperature of their photosphere.
What is the lowest temperature that will cause a blackbody to emit radiation that peaks in the infrared?
The temperature at which a blackbody radiates primarily in the infrared region is around 300 K (27°C). At this temperature, the peak of the blackbody radiation curve falls within the infrared spectrum.
What was the purpose of the blackbody radiation experiment?
The purpose of the blackbody radiation experiment was to study the spectrum of light emitted by a perfect absorber of radiation at different temperatures. This experiment helped to confirm the existence of quantized energy levels in atoms and provided important insights into the behavior of electromagnetic radiation.
Dispersing light from a hot wire which emits white light gives what type of spectrum is it?
A hot, glowing wire emits all wavelengths (or colors) of light. This is sometimes called "blackbody radiation." Since all colors are present, you will get a continuous spectrum.
What is the term for a broad uninterrupted band of radiant energy?
Blackbody radiation is a broad uninterrupted band of radiant energy.
What type of spectrum is produced when the light emitted directly from a hot dense object passes through a prism?
A continuous spectrum is produced when light emitted directly from a hot dense object passes through a prism. This spectrum shows a rainbow of colors with no distinct lines, indicating that all wavelengths of light are present. This type of spectrum is characteristic of a blackbody radiation emission.
What are the characteristics of the spectrum of the cosmic background radiation?
The measurements at a number of discrete frequencies of the background radiation that fills space place their relative amplitudes reasonably close to the curve that characterizes the radiation of a blackbody with a temperature of 2.725 degrees absolute. As such, the peak amplitude is found at the frequency of about 162.5 GHz.
What is the spectrum of the moon?
The moon reflects sunlight, so its spectrum is similar to that of the Sun. It follows a blackbody curve with peaks in the visible range. The moon also shows absorption lines from elements in its surface materials.
