We all see the breathtaking lightning along with the thunderstorm. So basically, how & why lightning and thundering happens? Lightning is a discharge of electricity. And just a single stroke of lightning can heat the air around it up to 30,000°C. This heating causes the air to expand rapidly. This extremely fast expansion of air […]
Why Lasers are so powerful?
Light is a weak form of energy however lasers are a very powerful source of energy why?For understanding the above question, first, let us know about light and laser first. Light can be defined as electromagnetic radiation or spectrum (i.e, bands of seven colors) with a varying wavelength of (400-700 nm), which can be detected […]
Why colors not visible in dim light?
Under the dim light, we are able to see the objects but cannot distinguish between their colors why?We can define color as a visual effect i.e. actually caused by the spectral composition of light which can be emitted, transmitted, or reflected by an object. When light hits an object then the object absorbs some of […]