Dhansak ("Dhan" is Persian/Urdu for "seed"- referring to grains or legumes; "Sak" (derived from Gujarati "shaak" meaning vegetable greens or cooked vegetables). The Gujarati element of the recipe is the liberal use of a variety of Indian spices and condiments, in contrast to the more mellow Iranian recipes. In Parsi homes, dhansak is traditionally made on Sundays owing to the long preparation time required to cook the lentils and vegetables into a mush (in the days before pressure cooking was employed). Dhansak is also always had on the fourth day after the death of a near one. There is no meat
Pulse-position modulation Pulse-position modulation Pulse-position modulation (PPM) is a form of signal modulation in which "M" message bits are encoded by transmitting a single pulse in one of formula_1 possible required time shifts. This is repeated every "T" seconds, such that the transmitted bit rate is formula_2 bits per second. It is primarily useful for optical communications systems, which tend to have little or no multipath interference. An ancient use of pulse-position modulation was the Greek hydraulic semaphore system invented by Aeneas Stymphalus around 350 B.C. that used the water clock principle to time signals. In this system, the draining of water