Q: What is “spin” in particle physics? Why is it different from just ordinary rotation?

As of January , all of them have been inserted at the end of either June 30 or December IERS publishes announcements every six months, whether leap seconds are to occur or not, in its “Bulletin C”. Such announcements are typically published well in advance of each possible leap second date — usually in early January for June 30 and in early July for December Between and , a leap second has been inserted about every 18 months, on average. However, the spacing is quite irregular and apparently increasing: Unlike leap days , UTC leap seconds occur simultaneously worldwide; for example, the leap second on December 31,

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Read Full Review This chart has both cheap turntables and ones that are of higher quality and price, all from the good turntable brands. We tried hard to balance out the ratings, so that price and quality both were weighed similarly. Top Turntables According To Your Budget Your budget is obviously an important aspect that will determine which turntable you will bring home.

It is one of our heaviest weighted categories in which we determine the top 8 list and that is because we all want to get value out of our purchase, and we are no different from you. Well because there are so many products out there, we have broken them down into three categories to make your choice as easy as possible. Here is our value picks, starting with the lower price: