Find out information about kaleidoscope. optical instrument that uses mirrors to produce changing symmetrical patterns. Invented by the Scottish physicist Sir David Brewster Brewster, Sir David,... Explanation of kaleidoscope
While books remains the most popular category for Amazon, it is quickly growing its other categories and diversifying into new areas. Here's the top 10 things people bought in February of 2015, ranked according to the number of purchasers in each category. 10. Cosmetics and fragrances.
Amazon sold 426 items per second in run-up to Christmas. Just like last year, Amazon is reporting that the 2013 shopping season was its biggest yet, not just in terms of its sales, but also with its services. The company announced today that on Cyber Monday alone, more than 36.8 million items were ordered worldwide, up from last year's 26.5 million items â that's about 426 items purchased per second. Amazon Prime broke records as well, gaining more than 1 million new members in the third week of December.