Nothing in the universe is instant, everything takes a finite time.luxiaolei said:As I think, it should be instant, can not find any reason for finite time.
Electrons absorb photons because photons carry energy, and when they interact with an electron, they transfer their energy to the electron. This energy absorption can cause the electron to move to a higher energy state or even be ejected from the atom.
When a photon interacts with an electron, it is either absorbed or scattered. Absorption occurs when the energy of the photon matches the energy needed to move the electron to a higher energy state. The electron then absorbs the photon, increasing its energy and changing its behavior.
The absorption of a photon by an electron takes a finite amount of time because there are physical processes involved in the interaction. These processes include the transition of the electron to a higher energy state, the transfer of energy from the photon to the electron, and the subsequent changes in the behavior of the electron.
No, an electron cannot absorb a photon instantaneously. Even though the absorption process may be very fast, it still takes a finite amount of time. This is due to the physical processes involved, as well as the fact that the speed of light is finite.
Yes, the time it takes for an electron to absorb a photon can depend on the energy of the photon. Higher energy photons have a shorter wavelength, which means they have a higher frequency and carry more energy. This can lead to a faster absorption process compared to lower energy photons. However, the exact time it takes for an electron to absorb a photon also depends on other factors, such as the properties of the material the electron is in.