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  1. Daylight saving time. Daylight saving time ( DST ), also referred to as daylight saving (s), daylight savings time, daylight time (United States and Canada), or summer time ( United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer, so that darkness falls ...

  2. en.wikipedia.org › wiki › UFC_300UFC 300 - Wikipedia

    Total gate. $16,508,823 [1] Event chronology. UFC Fight Night: Allen vs. Curtis 2. UFC 300: Pereira vs. Hill. UFC on ESPN: Nicolau vs. Perez. UFC 300: Pereira vs. Hill was a mixed martial arts event produced by the Ultimate Fighting Championship that took place on April 13, 2024, at the T-Mobile Arena in Paradise, Nevada, United States.

  3. Canonical commutation rule for position q and momentum p variables of a particle, 1927. pq − qp = h / (2 πi ). Uncertainty principle of Heisenberg, 1927. The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is a limit to the precision with which ...

  4. en.wikipedia.org › wiki › Dollar_TreeDollar Tree - Wikipedia

    • History
    • Business Strategy
    • Canada
    • Recalls
    • External Links

    Early years

    In 1953, K. R. Perry opened a Ben Franklin variety store in Norfolk, Virginia, which later became known as K&K 5&10. In 1970, K. R. Perry, Doug Perry, and Macon Brock started K&K Toys in Norfolk, Virginia. This mall concept grew to over 130 stores on the East Coast. In 1986, Doug Perry, Macon Brock, and Ray Compton started another chain store called Only $1.00with five stores, one in Georgia, one in Tennessee, and three in Virginia. The expansion of dollar stores was continued alongside K&K T...

    1990s

    In 1991, the corporation made a decision to focus exclusively on the expansion of dollar stores after selling K&K stores to KB Toys, owned by Melville Corporation. In 1993, the name Only $1.00 was changed to Dollar Tree Stores to address what could be a multi-price-point strategy in the future, and part equity interest was sold to SKM partners, a private equity firm. Brock and the co-founders of Dollar Tree got the idea for the company from another retailer known as Everything's A Dollar, whi...

    2000s

    In 2000, Dollar Tree acquired Dollar Express, a Philadelphia-based company, and also built a new distribution center in Stockton, California. In 2001, the company opened two additional distribution centers, in Savannah, Georgia, and Briar Creek, Pennsylvania. In 2003, Dollar Tree acquired Salt Lake City, Utah-based Greenbacks, Inc., and opened a new distribution center in Marietta, Oklahoma. In 2004, Dollar Tree opened its first store in North Dakota which marked its operation of stores in al...

    Dollar Tree is classified as an extreme discount store. It claims to be able to achieve this because their buyers "work extremely hard to find the best bargains out there", and it has "great control over the tremendous buying power at the dollar price-point".Its prices are primarily designed to attract financially disadvantaged customers, but it ha...

    On October 11, 2010, Dollar Tree announced its acquisition of Dollar Giant, incorporated in 2001 in Vancouver, Canada, for $52 million. At the time of the acquisition, Dollar Giant had about 85 retail outlets in the provinces of British Columbia, Alberta, Saskatchewan and Ontario. Approximately 30 of its retail locations are in British Columbia, ma...

    The Consumer Product Safety Commission lists several recalls for products sold at Dollar Tree stores. The recalled products include salsa jars with broken glass inside them, hot-melt mini glue guns (recalled in January 2008) which could short circuit and cause burns,and candle sets (recalled in February 2004) that could produce excessive flame.

  5. en.wikipedia.org › wiki › Formula_OneFormula One - Wikipedia

    Formula One, commonly known as Formula 1 or F1, is the highest class of international racing for open-wheel single-seater formula racing cars sanctioned by the Fédération Internationale de l'Automobile (FIA). The FIA Formula One World Championship has been one of the world's premier forms of racing since its inaugural running in 1950.

  6. Linearity. The Schrödinger equation is a linear differential equation, meaning that if two state vectors and are solutions, then so is any linear combination. of the two state vectors where a and b are any complex numbers. [13] : 25 Moreover, the sum can be extended for any number of state vectors.

  7. Earth's rotation. Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space. Earth rotates eastward, in prograde motion. As viewed from the northern polar star Polaris, Earth turns counterclockwise . The North Pole, also known as the Geographic North ...

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