Weather front areas of precipitation help determine the frontal type and location. There are two different meanings used within meteorology to describe weather around a frontal zone. The term "anafront" describes boundaries which show instability, meaning air rises rapidly along and over the boundary to cause significant weather changes. A "katafront" is weaker, bringing smaller changes in temperature and moisture, as well as limited rainfall. A cold front is located at the leading edge of the temperature drop off, which in an isotherm analysis shows up as the leading edge of the isotherm gradient, and it normally lies within a sharp surface
Etymology of electricity "elēkrŏn", meaning 'shining light'. The letter Q was used for electric charge instead of the letter E because the letter was already used to represent the electron. The word "electric" was first used by Francis Bacon to describe materials like amber that attracted other objects. The first usage of the English word "electricity" is ascribed to Sir Thomas Browne in his 1646 work, "Pseudodoxia Epidemica": In this context, an "Electrick" or "Electrick body" was a non-conductor, or an object capable of attracting "light bodies" (like bits of paper) when excited by friction; a piece of amber is "an Electrick", while