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 Echo fans appear to be going all-in on the dream of having a connected home. The Echo Dot, a pared-down version of the original Echo, was the top-selling product on Amazon.com during Thanksgiving and Black Friday.