According to physics historian Michael Fowler, "Isaac Newton invented his clever rainbow disc in 1666 to demonstrate the color spectrum." Inspired by light shining through a prism in his room, Newton created a simple paper disk with black and white sectors. When spun fast, the arc of colors ... Read More

  This is a special type of device that is good to watch the object from long distances. All astronomers and hunters use this tool for watching all kinds of things with a clear mirror to put perfect light. Therefore, this telescope device is good to give a bright and large view from a far dist... Read More