In Electronics and Instrument Physics
- Another name for the cathode in vacuum tube technology which emits electrons through thermionic emission or field electron emission.
- Another name for the anode in scientific instruments and techniques based on the emission of ions from a solid surface, for example Atom Probe Tomography.
- The analog of the vacuum tube cathode in transistor technology, though the current flow through it may be either positive or negative, depending on the type of transistor.
- An infrared LED used to emulate a remote control. It can also be wired into the integrated receiver/decoder of any electronic device.
- Lambertian Emitter - a light source whose radiance is according to Lambert's cosine law.
Read more about this topic: Emitter
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