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When a photon excites a cone cell in the retina of the eye, it triggers a series of biological and chemical reactions that ultimately result in the generation of an electrical signal. This signal is then transmitted to the brain via the optic nerve, where it is interpreted as visual information.
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Difference between stimulated and spontaneous emission?
Stimulated emission occurs when an already excited atom is triggered by an external photon to release a second identical photon. Spontaneous emission, on the other hand, happens when an excited atom releases a photon without any external stimulation.
What happens when a hydrogen atom changes from the excited state to the ground state?
When a hydrogen atom transitions from an excited state to the ground state, it releases energy in the form of a photon. The photon emitted corresponds to the difference in energy between the two states, typically in the form of visible light, ultraviolet, or infrared radiation. This process is known as spontaneous emission or photon emission.
What physically happens to a molecule when it absorbs a photon?
When a molecule absorbs a photon, its energy increases and the electrons in the molecule are excited to higher energy levels. This can lead to changes in the molecular structure or bond vibrations. In some cases, the molecule may undergo a chemical reaction or emit a photon in a process known as fluorescence or phosphorescence.
A pigment absorbs a photon only if the energy of the photon is?
greater than or equal to the energy gap between its ground and excited states.
Relationship between frequency and photon energy?
The frequency of a photon is directly proportional to its energy according to the equation E=hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon. This means that higher frequency photons have higher energy, and vice versa.
What happens when an electron returns to its ground state from it's excited state?
A photon will be released!
Difference between stimulated and spontaneous emission?
Stimulated emission occurs when an already excited atom is triggered by an external photon to release a second identical photon. Spontaneous emission, on the other hand, happens when an excited atom releases a photon without any external stimulation.
What must happen for an atom to go from an excited state to a ground state so color is seen?
An excited electron spontaneously drops back to its ground state, emitting a photon of light as it does so. <><><><><> The same thing happens in the nucleus. An excited nucleus drops down to a lower energy level, releasing a photon.
What happens when a hydrogen atom changes from the excited state to the ground state?
When a hydrogen atom transitions from an excited state to the ground state, it releases energy in the form of a photon. The photon emitted corresponds to the difference in energy between the two states, typically in the form of visible light, ultraviolet, or infrared radiation. This process is known as spontaneous emission or photon emission.
What gets excited when chlorophyll absorbs a photon?
electrons
If an electron is in an excited state it must lose energy when it falls to a lower state. What happens to the energy that is lost?
The energy that is lost when an electron falls to a lower state is emitted as a photon of light. This process is known as photon emission, and the energy of the emitted photon corresponds to the energy difference between the initial and final states of the electron.
What physically happens to a molecule when it absorbs a photon?
When a molecule absorbs a photon, its energy increases and the electrons in the molecule are excited to higher energy levels. This can lead to changes in the molecular structure or bond vibrations. In some cases, the molecule may undergo a chemical reaction or emit a photon in a process known as fluorescence or phosphorescence.
A pigment absorbs a photon only if the energy of the photon is?
greater than or equal to the energy gap between its ground and excited states.
What Cell in the thalamus that is excited by red and inhibited by green?
cone
When going up an energy level what happens?
When an electron moves up an energy level, it absorbs energy in the form of a photon. This causes the electron to jump to a higher energy level and become excited. The electron will eventually return to a lower energy level by emitting a photon of light.
How rod cells are excited?
Rod cells are excited by very low levels of light, in contrast to cone cells that are excited by higher levels of light.
Whenever an excited hydrogen atom falls back from an excited state to its ground state it?
emits a photon with a specific energy corresponding to the difference in energy levels between the excited state and the ground state. This emitted photon can be in the form of visible light, ultraviolet light, or infrared light depending on the specific energy transition. This process is known as emission spectroscopy and is used to identify elements based on the unique energy levels of their electron configurations.
