Notes and Study material for Exams
Electromagnetic Wave Electromagnetic Wave are waves composed of undulating electrical fields and magnetic fields. The different kinds of electromagnetic waves, such as Light and radio waves, form the electromagnetic spectrum. All electromagnetic waves have the same speed in a vacuum, a speed expressed by the letter c (the speed of light) and equal to about … Read more
Ray Optics The wave model of Light has one serious drawback, though: Unlike other wave phenomena such as Sound, or surface waves, it wasn‟t clear what the medium was that supported light waves. Giving it a name – the “luminiferous aether” – didn‟t help. James Clerk Maxwell‟s (1831 – 1879) theory of electromagnetism, however, showed … Read more
Moving Charge and Magnetism Magnetism is a phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects. A magnet is any piece of material that has the property of attracting iron (or steel). Magnetite, also known as lodestone, is a naturally occurring rock that is a magnet. This … Read more
Waves A wave can be described as a disturbance that travels through a medium from one location to another location.It is a disturbance or variation that transfers energy progressively from point to point. It may take the form of an elastic deformation, a variation of pressure, electric or magnetic intensity, electric potential, or temperature. When … Read more
The Sun’s Embrace: Understanding Insolation and the Earth’s Heat Budget The Earth, a vibrant and dynamic planet, teems with life thanks to a delicate balance of energy received from the sun. This energy, known as insolation, is the driving force behind our planet’s climate, weather patterns, and the very existence of life itself. Understanding insolation … Read more
The Silent Threat: Exploring the Impact of Radiation from Mobile Phone Towers on Humans and Wildlife The ubiquitous presence of mobile phone towers has become an integral part of modern life, facilitating seamless communication and connectivity. However, their presence has also sparked concerns regarding the potential health risks associated with the electromagnetic radiation they emit. … Read more