Monday, September 30, 2024
Wednesday, September 25, 2024
Space
Pizza
Weather man
Buzz cut
Thing one and thing two
Santa Claus
Cream cheese
Leprechaun
Foot man
Monday, September 16, 2024
Friday, September 13, 2024
Pinhole Camera
A pinhole camera is a very basic type of camera that doesn't use a lens. Instead, it has a small hole, known as the pinhole on one side of a light-proof box. When light from an object passes through this tiny hole, it projects an inverted image onto the opposite side of the box. This image can be captured on a photosensitive surface like photographic paper or film. The pinhole camera makes it a great educational tool for demonstrating how light and images work. The pinhole camera operates on the principle that light ravels in straight lines. The image produced is inverted (upside down) and reversed (left to right). The translucence of the image depends on the size of the pinhole and the photosensitive surface. The concept of the pinhole camera dates back to ancient times. The earliest known mention comes from the Chinese philosopher mozi (circa 470 to 391 BCE), who describes the basic principles of optics and how an inverted image is formed through a small hole. The first known photograph taken with a pinhole camera was by Sir David Brewster in the 1850s. This marked the beginning of using pinhole cameras for photographic purposes.
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