Excitation may not take place in a laser (or the like) for a number of reasons. The lasing medium may be defective or contaminated and unable to lase. The stimulation may be insufficient or incorrect. There are other technical reasons that prevent stimulation emission from taking place, but they generally have to do with the lasing medium or the action of the stimulator. Our friends at Wikipedia have a some relevant articles up, and links are provided. Knowledge there is free.
Lightning produces ozone through the process of electrical excitation of oxygen molecules.
'Excitation' describes the process of creating a magnetic field, and is used to describe that process by an electrical machine's field windings.
It depends what you used as your excitation wavelength. If you used 800 nm as your excitation wavelength, this is due to Rayleigh scattering, where photons from the emission source are scattered off of the molecules in your sample and are picked up by the detector. If your wavelength is shorter (like 400 nm) then this is due to Raman Scattering, where the molecule either absorbs or donates energy from/to the photon during the scattering process. Scattering peaks are traditionally much sharper than fluorescence peaks.
Raman scattering involves the SCATTERING of electromagnetic radiation by molecules, not atoms Fluorescence emission follows an absorption process
The process in which an electron emit from metal surface into surrounding is known as electrons emission
Like most excitable cells, muscle fibers respond to the excitation signal with a rapid depolarization which is coupled with its physiological response: contraction.
Excitation of electrons in photosystem II.
Exocytosis is the process that moves molecules from the inside of the cell to the outside. This process uses sacs or vesicles to move the molecules out.
the process of breaking down complex food molecules into simpler food molecules is digestion
The process is called Dephosphorylation.
The process of ozone destruction is a chemical process. It is a way of decomposing the ozone molecules into oxygen molecules.
Process in which water molecules moves across a membrane?
Sugar molecules are bonded together by a process called dehydration synthesis.
the atomic number changes
Photo electric emission process. Cells are named as photo emissive cells.
Emission means leaking out, escaping, sending out etc, The word emission then is used to refer to gas that appears after a chemical process, like burning oil or coal. Carbon dioxide is a gas emitted by the burning.
Effluents are liquid waste that come out of industrial pipeline while emission the act or process of letting something out or giving something out
Exocytosis is the process by which large molecules are transported out of the cell.
Begin by removing the wiring harness. Remove the retaining screws. The emission control will come off. Reverse the process to install your new emission control.