intensity modulation
121Magnetosphere of Jupiter — Discovery[1] Discovered by …
122Klystron — A klystron is a specialized linear beam vacuum tube (evacuated electron tube). Klystrons are used as amplifiers at microwave and radio frequencies to produce both low power reference signals for superheterodyne radar receivers and to produce high …
123building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
124Electro-optic modulator — (EOM) is an optical device in which a signal controlled element displaying electro optic effect is used to modulate a beam of light. The modulation may be imposed on the phase, frequency, amplitude, or direction of the modulated beam. Modulation… …
125Chirp — For other uses, see Chirp (disambiguation). A chirp is a signal in which the frequency increases ( up chirp ) or decreases ( down chirp ) with time. In some sources, the term chirp is used interchangeably with sweep signal.[1] It is commonly used …
126Self-focusing — is a non linear optical process induced by the change in refractive index of materials exposed to intense electromagnetic radiation. [Cumberbatch, E. Self focusing in Non linear optics , J. Inst. Maths Applics 6, 250 (1970)] Mourou, G. A. et al.… …
127speech — /speech/, n. 1. the faculty or power of speaking; oral communication; ability to express one s thoughts and emotions by speech sounds and gesture: Losing her speech made her feel isolated from humanity. 2. the act of speaking: He expresses… …
128Digital signal — Main article: Signal (electronics) A digital signal is a physical signal that is a representation of a sequence of discrete values (a quantified discrete time signal), for example of an arbitrary bit stream, or of a digitized (sampled and analog… …
