Everyday Science Questions

Every one of us has seen manholes – these are the round openings which connect the sewerage pipes of our city or village. However they serve a much higher purpose – manholes are used as an entry point for pipe cleaning. Each manhole is covered with a round cover in order to prevent accidents.

Why Do Stars Twinkle? Because of the difference in densities among the layers of atmosphere, the density of the atmosphere as a whole is not consistent. The layer at a higher altitude is less cold and denser than the layer present at a lower altitude. Because of this as we go upwards, the refractive index […]