We all know what history is. It’s the study of past but we only know it through text, archaeology and evidences. What if there is a way to see the past like a movie or a video-the exact happenings? Light travels at a speed of about 3*10^8 m/sec or 300,000 km/sec. Incredibly fast, isn’t it?ContinueContinue reading “This is how we can see the see the Past”