Earth’s Magnetic Field The Earth has a strong natural magnetism, which plays a crucial role in protecting us from the hazardous cosmic radiation and charged particles in space. This magnetism is known as the Earth’s magnetic field. Components of Earth’s ...
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Nuclear energy
What is Nuclear Energy? Nuclear energy is the energy released during a nuclear reaction. This reaction can be either fission, which splits atoms to release energy, or fusion, which joins atoms together to create energy. Nuclear energy is used across ...
Why liquids are poor conductors of Heat
Pure liquids have molecules further apart from each other. Although molecules move about within the liquid, they are slow to pass heat to other regions compared to the free electrons in metals. This is because there are large inter-molecular distances ...
Features of a common thermometer
Bulb – Carries the liquid in the thermometer. It has a thin glass wall for effective heat transmission between the liquid and body whose temperature is taken. Capillary bore – Liquid expands and contracts along the capillary tube. It isnarrow for high ...
[Explained] Newton’s Third Law
![[Explained] Newton’s Third Law](https://teachersofphysics.com/wp-content/uploads/2020/09/fall_2013_sketcheskey_3-270x180.jpg)
Sir Isaac Newton first presented his three laws of motion in the “Principia Mathematica Philosophiae Naturalis” in 1686. His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A ...