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For many when they start their business of affiliate marketing, only wants to win as much as possible, without knowing how much really can be, perhaps guided by a course that purchased on the internet, by mentioning that much money can be won, taking them to work and work without a fixed goal or defined […]

To describe the visible characteristics of extended objects, indicate their overall brilliance and angular dimensions. The overall brilliance, as usual, is given in apparent magnitude. Angular dimensions, according to tradition – in degrees, arcminutes, angular seconds. Denote by m – total brilliance of our extended object, and through A, B – the angular size, respectively […]