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.com â one more well-known service for online shopping. Amazon is also a great place for selling stuff. Here the deals are not free; you should pay $0,99 to sell up to 40 items a month and $39,99 for more than 40. Craiglist.org â one of the oldest classified ads site.