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Why do astronomers say that the spectral lines produced by an element are like fingerprints?
The energy levels of an atom are the distinctive property of that atom. The difference in energy levels determine the amount of light that could be emitted or absorbed. There is no same energy level difference from one atom to another, therefore spectral lines are referred to as an "atom's fingerprint". The spectral lines make atoms unique, just as fingerprints make people unique, no two humans have the same fingerprints.
What is a stream of particles produced by the corona?
A stream of particles produced by the corona is known as the solar wind. It consists of charged particles, such as electrons and protons, that are continuously emitted from the Sun's outer atmosphere. These particles can interact with the Earth's magnetic field and cause phenomena like auroras.
Streams of protons and electrons emitted from the Sun produce?
Streams of protons and electrons emitted from the Sun produce solar wind, a continuous flow of charged particles that sweep through the solar system. These particles can interact with the magnetic field of Earth, causing phenomena such as auroras and geomagnetic storms.
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.
Which physical property of a star does the spectral type measure?
The spectral type of a star measures its surface temperature. This information is derived from the star's spectrum, which shows the distribution of light emitted at different wavelengths. Stars are classified into different spectral types, such as O, B, A, F, G, K, and M, based on their surface temperature and the dominant absorption lines in their spectra.
The spectral lines produced by elements all look the same?
Spectral lines produced by elements are unique to each element due to differences in electron configurations. These lines represent the specific energies emitted or absorbed when electrons transition between energy levels. Analyzing these spectral lines can help identify the presence of specific elements in a sample.
What evedence convinced JJ Thomson that an atom consists of more than electrons?
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
What evidence convinced J.J Thomson that an atom consist of more than electrons?
The evidence for JJ Thomson was that the plum pudding model could not predict why atoms absorbed and emitted spectral lines.
What is meant by the term spectral emission?
Refers to the color of light emitted by a phosphor.
Spectral properties of a flame?
The spectral properties of a flame refer to the visible light emitted when a hydrocarbon fuel burns. The color of the flame can indicate the temperature and the presence of certain elements in the fuel. Spectral analysis of the light emitted from a flame can be used to identify the chemical composition of the burning material.
What determines the range of spectral lines produced during electron transition?
The range of spectral lines produced during electron transition is determined by the energy difference between the initial and final electronic states. This energy difference corresponds to the photon energy of the emitted light, which dictates the wavelength or frequency of the spectral lines observed in the spectrum. Additionally, the atomic structure and electron configuration of the atom also play a role in determining the specific transitions and resulting spectral lines.
How were electrons produced from the cathode ray ube?
Electrons were produced in a cathode ray tube by applying a high voltage to the cathode, causing electrons to be emitted through thermionic emission. These electrons were then accelerated towards the anode by the electric field within the tube, creating a beam of electrons known as the cathode ray.
When does light emitted from a flame produced when electrons are in an excited state?
Light emitted from a flame occurs when electrons in atoms or molecules absorb energy and move to an excited state. When these electrons return to their lower energy levels, they release energy in the form of light. This process is known as the emission of photons, which produces the characteristic colors of the flame. The specific wavelengths of light emitted depend on the elements present in the flame and their unique energy level transitions.
When 10 electrons drop from fifth to second energy level?
When 10 electrons drop from the fifth to the second energy level, energy in the form of photons is emitted. The energy of the emitted photon is equal to the difference in energy levels between the initial and final states of the electrons. This process is known as photon emission or de-excitation.
What is light produced?
A filament is heated by an electric current and photons are emitted.
What is beryllium spectral lines?
Beryllium spectral lines are specific wavelengths of light emitted or absorbed by beryllium atoms when they undergo transitions between energy levels. These spectral lines are unique to beryllium and can be used in spectroscopic analysis to identify the presence of beryllium in a sample.
What do spectral lines tell us about the internal structure of the atom?
Spectral lines tell us how many different energy levels an atom has, and how far apart those energy levels are spaced. This is possible because spectral lines are the result of an excess (emission lines) or deficiency (absorption lines) of observed photons emitted from certain types of matter. The lines are caused by electrons moving between energy levels within individual atoms. Since each element emits it's own unique spectrum, this means that different types of atoms must have a distinct number of electrons in very particular energy levels.
