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.
Both Apple's new iPad Air and Amazon's latest tablet, the Kindle Fire HDX 8.9, will be atop a lot of gift lists. The iPad is inarguably the most popular tablet today, and the Air will help Apple continue its dominance in the tablet market.