Back to Top. 1  These are the waves which are having the lowest frequency in the electromagnetic spectrum. They are given out by transmitter. 2  They are formed as a result of thunder, lightning etc. 3  They are used in communication mostly.  They are of four types of radio waves 1  namely: Long wave.  Medium 1  wave. Ultra high frequency  (UHF)
What is the role of arsenic in the mining industry . Arsenic is a naturally occurring element commonly found as an impurity in metal ores, and is produced commercially for use in pesticides, wood preservatives, and , Get Price arsenic - definition of arsenic by Medical dictionary
Arsenic has many applications: Some compounds of arsenic are used as insecticides.In medicine, arsenic trioxide is used in the treatment of psoriasis. An isotope of arsenic (A â¦ s-74) is used as a tracer in some diagnostic imaging.Most metallic arsenic is used in forming alloys of lead and copper.(Unalloyed lead is too soft for many purposes).Arsenic atoms are used to create n-type regions in silicon, when fabricating transistors and integrated circuits. It is used in fireworks to impart color to the flame. Arsenic Sulfide,Yellow As2S3 This Chemical is just as poisonous as its red brother and is also used in fireworks, somewhat. The common name is Kings Gold.   Arsenious Oxide As4O6 A white, highly poisonous powder used in fireworks.