Air is certainly the most important thing in our life. In fact that’s what keeps us alive. With air, we maintain certain pressure in the tires of our vehicles to keep ourselves moving. We fill our birthday balloons with air. We fly airplanes in air using aerodynamic principles. It helps us burning various fuels for … Read more
A water dropper is device that works by utilizing the atmospheric principles of atmospheric pressure of air and suction. It is also known as pipette. It has many practical applications ranging from providing controlled dose of medicine to infant to putting the droplets in eye. You will find its use in chemistry lab in order … Read more
Finding the density of solids is much easier than you think. First lets looks what the density is? Density is defined as mass per unit volume: So in order to find the density of solids, all we need is to measure the mass and volume of the solid sample and then divide mass by volume. … Read more
Have you ever noticed the gulping sound and rising bubbles when you empty a water bottle by holding it vertically downward? Have you ever wondered why this happens? Before emptying the water bottle, the atmospheric pressure inside and outside the bottles remains the same. However as you tilt the bottle downward, the water starts to … Read more
Have you have wondered that why balloons pop when you take them to mountains or any higher altitudes? Or why an unpacked bag of snacks becomes inflated and popped at times as you go up hill. The answer lies in the change of something called atmospheric air pressure. Even though we can’t see or feel … Read more
The Newton’s Cradle is a device that beautifully showcases the conservation of momentum. Before explaining how Newton’s Cradle work, let’s first understand the concept of momentum. What is momentum? Momentum is a characteristic of moving objects that describes how much “oomph” they have when they’re in motion. It’s like how a heavy truck is harder … Read more
We often use the word ‘power’ in our common usage to describe something strong and full of energy. However in physics, power has a very specific meaning. It is described as the amount of energy transferred per unit of time. As you know that unit of energy is joule. Power is defined as: Power = … Read more
Energy is one of most fundamental concepts in science. In fact, all known phenomena involve some form of energy. Energy comes in several different forms such as chemical energy, thermal energy, nuclear energy, radiation energy, magnetic energy etc. However in terms of motion of the two objects, the energy is categorized into two types namely; … Read more
While travelling on highways during night, one thing you might have noticed that the signboards along the highways are almost always visible. Moreover they appear to glow as your vehicle approaches the signboards. Have you wondered what might have caused these signboards to glow during night? Surely there is some kind of reflection of light … Read more
What is Periscope? A periscope is an optical instrument which is used to see objects that are not in the direct line of sight of observer. It is commonly used in such areas or places where the viewer is hidden or protected such as in submarines to observe surface above water. Working Principle Periscope works … Read more