India is a land of incredible temples, and each has its own unique story, architecture, and cultural importance. Some temples are known for their sheer size and grandeur, while others fascinate ...

The first Pinhole camera (Camera Obscura) was used to trace an image. Camera Obscura is used to make an image on metal plates coated with chemicals. This was when the first permanent photograph was ...

Researchers use laser light to form a tiny “optical pinhole” inside a nonlinear crystal, which also turns the infrared image into a visible image that a traditional silicon-based camera sensor can ...