Tahini means "to grind", the same root as , "flour" in some dialects. There is also a sweet spread made from it called Halawa Taḥīniyya , which roughly translates as sweet Tahini. It is also known to be a type of Halva and sometimes has mashed or sliced pistachio pieces sprinkled inside or on top of it. Usually it is spread on bread and eaten as a quick snack. The word "tahini" appeared in English by the late 1930s. Plain, unprocessed sesame paste with no added ingredients is sometimes known as raw tahini. The oldest mention of sesame is in a
Solder paste a move to lead-free solder. Solder paste is thixotropic, meaning that its viscosity changes over time with applied shear force (e.g., stirring). The "thixotropic index" is a measure of the viscosity of the solder paste at rest, compared to "worked" paste. Depending upon the formulation of the paste, it may be very important to stir the paste before it is used, to ensure that the viscosity is appropriate for proper application. The size and shape of the metal particles in the solder paste determines how well the paste will "print". A solder ball is spherical in shape; this helps in