Obsolete Russian units of measurement Peter the Great replace it with the Hindu-Arabic numeral system. The basic unit is the Russian cubit, called the "arshin", which has been in use since the 16th century. It was standardized by Peter the Great in the 18th century to measure exactly twenty-eight English inches (). Thus, 80 vershoks = 20 piads = 5 arshins = 140 English inches (). A "piad" (, “palm”, “five”) or "chetvert" (, “quarter”) is a hand span, the distance between ends of the spread thumb and index finger. Alternative units: As in many ancient systems of measurement the Russian distinguishes between dry and
Tip of the tongue target word and has been shown to have a larger benefit for older adults. This is consistent with the spreading activation model, where neural connections are strengthened when used more. Although older people experience more tip of the tongue states more often than any other category, recent studies have shown that frequent tip of the tongue states are not linked at all to dementia, which is common in the elderly. Despite the association of increased age with lower levels of episodic memory and more frequent TOT states, the two phenomena seem to be largely independent of one another. It is