Building Science concepts through real experiences.
Will it be seen or heard on the earth instantly or after some time ? For more such videos : https://www.youtube.com/c/ExperiHub?sub_confirmation=1 For more Science related blogs and videos : https://experihub.com/did-you-know/
Have you ever wondered, why the racing cars have flat tyres ? Why are their tyres unique and flat as compared to those of regular cars? Let’s find out in this video , we address this question and will introduce you to special tyres known as “slick tyres. Who wouldn’t…
Think of the candle flame as a #helium-filled balloon: No matter which way you hold the string or the tied-off end, the balloon will stubbornly right itself. In fact, turn a candle upside down, and its flame will shift around to point to the ceiling, as if pulled by an…
In physics, different quantities are often represented on graphs and very commonly time is represented on the horizontal x-axis. But why is Time always on X-axis in a graph? In physics, different quantities are often represented on graphs and very commonly time is represented on the horizontal x-axis. But does…
Come winters and all of us like to wrap ourselves with colorful Woolen Sweaters…and as the temperature dips further, we realise that another layer of the sweaters is needed to beat the chill. Same is the case with blankets. As the winters reach their peak, even the warmest of blankets…
Earth vs Venus – while they are two planets in our solar system, the former is the third planet while the latter is the fourth planet in the solar system. In addition, the mass of the former is much more than the latter. The latter is very close to the…
You may have seen holes made in huge hoardings and banners. Why are these necessary? Let’s find it out! The holes, simply let the air pass through, without any resistance. When air hits the hoarding, the hoarding board acts as a barrier in its path, so the air will try…
In the summer, because of thermal expansions, the electric wires sag, and in the winter, due to contraction, they may break. As a result, when setting up the wires between the poles, it’s important to keep them somewhat loose in the summer so that they don’t break in the winter due…
Silver is a precious metal and it is the only metal with a higher electrical conductivity than copper. But, it is an expensive material when compared to copper. This is why electric wires usually made of copper, but not silver. For more such videos : https://www.youtube.com/c/ExperiHub?sub_confirmation=1 For more Science related…
This is the stopping force that opposes the relative movement or the tendency of relative motion of two solid surfaces, fluid layers, and material elements when they slide each other, known as friction. It acts tangentially along with the contact.
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into static friction…
We can understand sliding friction as the resistance force created between any two bodies when sliding against each other. This friction is also called kinetic friction and it is defined as the force that is required to keep a surface sliding along another surface. It hangs on two variables- one…
When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into thermal energy (that is, it converts work to heat). This property can have dramatic consequences, as illustrated by the use of friction created by rubbing pieces of wood together to start…
Thermal conduction is the transfer of internal energy by microscopic collisions of particles and movement of electrons within a body. The colliding particles, which include molecules, atoms, and electrons, transfer disorganized microscopic kinetic and potential energy when joined, known as internal energy. Conduction takes place in most phases: solid, liquid,…
Heat transfer is the transfer of heat or thermal energy between physical systems. So when there is a temperature difference between two bodies, heat is transferred from the hot body to the colder body. There are three common modes of heat transfer – conduction, convection, and radiation. In this article,…
Radiation heat transfer experiment – The aim of the experiment is to investigate whether the amount of infrared radiation absorbed by a surface increases the temperature and depends on the physical characteristics of that surface . Thermal energy transfer from the sun to the earth in the form of ultraviolet…
The heater is placed near the floor because the air currents move upwards so the hot air fills up the whole room. Whereas, an air conditioner is placed near the ceiling because the cold breeze tends to settle down. If it is placed near the floor then it will fill just…
The vacuum flask consists of two vessels, one placed within the other and joined at the neck. The gap between the two vessels is partially evacuated of air, creating a partial-vacuum which reduces heat conduction or convection. Heat transfer by thermal radiation may be minimized by silvering flask surfaces facing…
It could simply be that black paint is cheaper… But I believe that the external coils on the back of refrigerator are painted black for the following reason: There is a rule in nature that says “a color that is better at absorbing heat is also better at radiating heat.” …
We encounter various types of lever in our everyday lives: opening a drink with a bottle opener, cutting paper with scissors, taking the lid off a paint pot using a screwdriver, and – the simplest of all – playing on a seesaw in the park. Yet, the principle of levers…
Levers are a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, the lever is divided into three…
According to heat definition, it is one of the essential forms of energy for the survival of life on earth. Transfer of heat takes place from one body to another due to difference in temperature as per thermodynamics. We use heat energy for various activities like cooking, ironing, transportation, recreation,…
No single answer to the question “What is light?” satisfies the many contexts in which light is experienced, explored, and exploited. The physicist is interested in the physical properties of light, the artist in an aesthetic appreciation of the visual world.
A mechanical device that changes the direction or magnitude of a force is known as a simple machine. In general terms, they are defined as simple mechanisms that make use of leverage or mechanical advantage to multiply force. Simple machines have few or no moving parts to modify motion and…
Current Current is the flow of particles in a particular direction. E.g air currents that cause winds or water currents. When particles flow in an electric circuit to produce electricity, it is called an electric current. Electric current The flow of electric charges in a circuit is called an…
If you have looked into the night sky, you may have noticed the Moon appears to change shape each night. Some nights, the Moon might look like a narrow crescent. Other nights, the Moon might look like a bright circle. And on other nights, you might not be able to…
A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force. Usually the term refers to the six classical simple machines that were defined…
Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial…
Air is a matter of substance, and hence it contains weight and other assets like density and pressure. Generally, the air surrounding us or objects does not show any pressure because it surrounds with equal pressure. In this science activity, we will observe that air shows its pressure when the…
A cloud is an aerosol consisting of a visible mass of minute liquid droplets, frozen crystals, or other particles suspended in the atmosphere of a planetary body or similar space. Water or various other chemicals may compose the droplets and crystals. On Earth, clouds are formed as a result of…
Air is a mixture of many gases. The molecules of gases present in air have weak inter-molecular forces of attraction. Due to this reason these molecules lie far apart from each other i.e. there are large vacant spaces present between these molecules. So, these molecules are free to move in any direction.…
A steam engine is a heat engine that performs mechanical work using steam as its working fluid. The steam engine uses the force produced by steam pressure to push a piston back and forth inside a cylinder. This pushing force can be transformed, by a connecting rod and crank, into rotational force for work. The term “steam engine” is generally applied only to reciprocating engines as just described, not…
You’d probably be scared if I told you a huge asteroid is going to collide with our planet sometime in the future, right? Of course you’d be, anyone would be. Now forget the asteroid, what if I told you an entire galaxy is coming your way, racing towards you at…
What is a time zone? Simply put, it is a way for different places to have different times on their clocks at the same instant. For instance, right now, in India, it may be 6 PM. While in Washington DC, it is 8.30 AM. This is because India is 14.5…
Do you ever just look at the moon & say to it “Wait you weren’t like this a few days back, did you just change shape?” Well, we have all at some point been amazed at how the moon appeared to go from nothing to a thin ‘C’, to a…
When we think of waves, we think of a sea beach with waves hitting the shore or a water pond with ripples running out in various directions. But, the fact is that we are living in the middle of a plethora of waves. Whatever we hear and whatever we see…
We use these all the time and yet, we never see them. Electricity & Magnetism are 2 powerful forces that we are addicted to. Fans, ACs, LEDs, Computers, Phones, Earphones, Induction Heaters…the list goes on and on. Can you imagine a world where this all was not available to humans?…
Can you imagine a world where nothing ever changes? No one moves. Nothing even stirs. Like a dead, stationary planet. As soon as there is any motion or any sort of action, some force kicks in. Or, to put it the other way, every force in nature results into some…