The aim of the course is to simplify the concepts of Physics for you and make you understand the subject through rational reasoning. This Course contains material on “Light” and “Matter and Its Properties”. Rectilinear motion of light, Functioning of Human Eye, Reflection of Light, Refraction of Light, States of Matter, Conversion of States of Matter from one to another under temperature and pressure are discussed at length for your understanding. The Course has been revised with the addition of one more lecture on Matter which summarizes for you all the essentials of the subject of Matter. A glimpse of the new lecture added to this Course is as follows:
• Matter is made up of small particles.
• The matter around us exists in three states— solid, liquid and gas.
• The forces of attraction between the particles are maximum in solids, intermediate in liquids and minimum in gases.
• The spaces in between the constituent particles and kinetic energy of the particles are minimum in the case of solids, intermediate in liquids and maximum in gases.
• The arrangement of particles is most ordered in the case of solids, in the case of liquids layers of particles can slip and slide over each other while for gases, there is no order, particles just move about randomly.
• The states of matter are inter-convertible. The state of matter can be changed by changing temperature or pressure.
• Sublimation is the change of gaseous state directly to solid state without going through liquid state, and vice versa.
• Boiling is a bulk phenomenon. Particles from the bulk (whole) of the liquid change into vapour state.
• Evaporation is a surface phenomenon. Particles from the surface gain enough energy to overcome the forces of attraction present in the liquid and change into the vapour state.
• The rate of evaporation depends upon the surface area exposed to the atmosphere, the temperature, the humidity and the wind speed.
• Evaporation causes cooling.
• Latent heat of vaporisation is the heat energy required to change 1 kg of a liquid to gas at atmospheric pressure at its boiling point.
• Latent heat of fusion is the amount of heat energy required to change 1 kg of solid into liquid at its melting point.
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Physics Made Easy For All- A Course On Light and Matter.
Light and States of Matter and Their Properties. Explanation of Natural Phenomena Concerning Light and States of Matter.
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Table of contents
Description
You will learn
✓ Human Eye functions on the Principles of Light and it has been discussed in granular detail and becomes clear to you. How to Correct Vision has been explained.
✓ You will learn Reflection, Refraction, Total Internal Reflection and Scattering of Light. Natural phenomena like why the sky appears blue have been discussed.
✓ You will understand the States of Matter and their Properties. The Concepts of Volume, Mass and Density have been discussed. Bonding of the Atoms is discussed.
Requirements
• There are no required skills, experience, tools or equipment.
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