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Can you explain why an electron's energy increases when it absorbs a photon and also describe what happens to the photon in this process?
When an electron absorbs a photon, its energy increases because the photon transfers its energy to the electron. The photon ceases to exist as a discrete particle and its energy is absorbed by the electron, causing it to move to a higher energy level.
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 to electrons if photon frequency is below threshold?
If the photon frequency is below the threshold frequency, the electrons do not have enough energy to be emitted from the material's surface, and no photoelectric effect occurs. The electrons will not be ejected and will remain bound to the material.
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.
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.
How can visible light waves create electricity?
Einstein showed that a photon striking metal gives an electron a push. That is current flow.
What happens when carbon dioxide absorbs an IR photon?
The molecule vibrate
Can you explain why an electron's energy increases when it absorbs a photon and also describe what happens to the photon in this process?
When an electron absorbs a photon, its energy increases because the photon transfers its energy to the electron. The photon ceases to exist as a discrete particle and its energy is absorbed by the electron, causing it to move to a higher energy level.
What happens to a pitch fork after striking water?
It gets wet.
What happens when an electron returns to its ground state from it's excited state?
A photon will be released!
Why is glass transparent?
When the electrons in molecules are unable to absorb the energy of incident photon, the photon continues along its path. This happens in the case of glass, even though glass is not 100 percent transparent, as some of the photon energy is absorbed by the glass electrons.
Describe what happens when a positron and an electron collide?
They destroy each other and create a gamma photon.
What happens when photons collide?
when two photons collide:- 1.a new photon gets formed 2.its direction will be different from that of the two photons. 3.the energy of the photon will remain the same
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.
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 happens when water absorbs an IR photon?
When water absorbs an infrared (IR) photon, the molecular vibrations of the water molecules increase as they absorb the energy from the photon. This increase in vibrational energy causes the water molecules to move more vigorously and increase in temperature.
What happens to electrons if photon frequency is below threshold?
If the photon frequency is below the threshold frequency, the electrons do not have enough energy to be emitted from the material's surface, and no photoelectric effect occurs. The electrons will not be ejected and will remain bound to the material.
