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Guitar Center was founded in Hollywood in 1959 by Wayne Mitchell as The Organ Center, a retailer of electronic organs for home and church use. In 1964, after a supplier required him to carry Vox guitar amplifiers, to continue receiving organs, Mitchell added the amplifiers to his inventory and renamed the store The Vox Center, leveraging the Beatles association with the Vox brand.
Cymatics (from Ancient Greek: κῦμα, romanized: kŷma, lit. 'wave') is a subset of modal vibrational phenomena . The term was coined by Swiss physician Hans Jenny (1904–1972).
Believed to be the first coupon ever, this ticket for a free glass of Coca-Cola was first distributed in 1888 to help promote the drink. By 1913, the company had redeemed 8.5 million tickets. [6] Coca-Cola's 1888-issued "free glass of" is the earliest documented coupon. [6] [7] Coupons were mailed to potential customers and placed in magazines ...
Graph of number of coupons, n vs the expected number of trials (i.e., time) needed to collect them all E (T ) In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests.
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