A compass is a tool which tells us the direction of North Pole of Earth’s magnetic field. Once you know the direction of North Pole, all other directions can be find out easily. Hence it is a useful tool for navigation and mapping. You can also use it for outdoor activities like hiking, sailing, trekking … Read more
A sundial is an ancient timekeeping device which uses the position of the sun to indicate the time of day. It has been in use well before the advent of mechanical clocks. Sundial typically has two components namely a flat plate usually known as the dial and a stick or triangular piece called as gnomon. … Read more
Historical Background Da Vinci bridge is beautiful and unique structure which was first designed by Leonardo Da Vinci in 16th Century, hence the name. The beauty of the bridge lies in its simplicity due to the fact that bridge requires no nut, bolts or any kind of adhesives to support itself. Characteristics of Da Vinci … Read more
No matter how big or small the water drops are, one thing common is that they are spherical when placed on flat surface. Whether you see it in the form dew on grass or water droplets tipping from the tap, they come in spherical shape. Have you ever wondered why is that so? If we … Read more
Have you ever wondered if it’s possible to light up a bulb without directly connecting it to a battery? The answer lies in the fascinating concept of electromagnetic induction—a principle discovered by Michael Faraday in the early 19th century. What is an electromagnetic induction? Electromagnetic induction occurs when a changing magnetic field creates an electric … Read more
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