Installing Your Wood Floors - Cost Factors. Installing hardwood flooring costs between $250 and $7,000, but the total price will vary depending on many factors. Some of those factors include what kind of flooring you decide to install, its quality or grade and how complex the installation job will be for a professional.
The early cameras were very boxy things with the very first often being similar in size to a coffin. the first camera was called a camera obscura. it was invented in the middle ages to aid artists in doing realistic paintings.
The invention of the camera obscura is attributed to the Iraqi scientist Alhazen and described in his Book of Optics (1011-1021). English scientists Robert Boyle and Robert Hooke later invented a portable camera obscura in 1665-1666.In the 1500s many artists, including Michelangelo and Leonardo da Vinci, used the camera obscura to help them draw pictures.nglish scientists Robert Boyle and Robert Hooke later invented a portable camera obscura in 1665-1666. In the 1500s many artists, including Michelangelo and Leonardo da Vinci, used the camera obscura to help them draw pictures.