Nightwatchman (cricket) the role up to that time. Nightwatchman (cricket) In the sport of cricket, a nightwatchman is a lower-order batsman who comes in to bat higher up the order than usual near the end of the day's play. The nightwatchman's job is to maintain most of the strike until the close of play (remaining in overnight, hence the name) and so protect other, more capable batsmen from being out cheaply in what may be a period of tiredness or in poor light at the end of the day, and then again the following morning when the batsmen have not yet ‘got
Origin and use of the term metalloid has recently been discouraged. This is because the former term 'has a well defined and quite distinct meaning in physics'. In physics, a semimetal is an element or a compound in which the valence band marginally (rather than substantially) overlaps the conduction band. This results in only a small number of effective charge carriers. Thus, the densities of charge carriers in the elemental semimetals carbon (as graphite, in the direction of its planes), arsenic, antimony and bismuth are 3 cm, 2 cm, 5 cm and 3 cm respectively. In contrast, the room-temperature concentration of electrons in metals usually exceeds 10