CBSE Science Class 10 Chapter 9 Mind Map: Understanding science is a tough task that becomes a more tedious job if resources are limited. Chemistry, Physics, and Biology are the subjects of science.

Professor Brian Cox explains that light is the fastest thing in the Universe, but it’s not infinitely fast; so the further an object is from us, the further back in time we see it. He outlines that ...

Scientists have created a new class of laser beam that appears to violate long-held laws of light physics. These new beams, which the team calls “spacetime wave packets,” follow different rules of ...

Professor Brian Cox explains how light travels so fast that people believed it was instantaneous. A Danish astronomer, Ole Rømer, noticed that Jupiter’s moon, Io sometimes seemed to appear later or ...