What is Pulse Oximeter? How does it work? Pulse Oximeter is a non-invasive and painless test that measures your oxygen saturation level, or the oxygen levels in your blood. It […]

Why does Nose plug up when we cry? To understand why your nose plugs up, you first have to understand how tears work. Tears are produced all the time, not […]

​​Why are no metallic items allowed to be worn inside an MRI room? An arm MRI (magnetic resonance imaging) scan uses strong magnets to create pictures of the upper and […]

​​Why are Stones/Gravel laid in Switchyard? Grit and gravel are laid in switchyards for a variety of reasons. Firstly, they are used to facilitate drainage. Switchyards are exposed to various […]

What is Air Quality Index (AQI)? The Air Quality Index (AQI) is a system used to measure and report the quality of the air in a specific area. It’s designed […]

What is Inflation? What are different types of Inflation? Inflation is a general increase in prices and fall in the purchasing value of money. It is often measured by the […]

  How do we measure the distances to things in space? There are a few primary methods used to measure distances to objects in space: Parallax: For relatively nearby objects […]