இலங்கைத் தமிழ் படைப்புகளுக்கான பிரத்யேக நூலகம்
இலவசமாக தமிழ் மின்புத்தகங்களை வாசிக்கவும் பதிவிரக்கம் செய்து கொள்ளவும் விரும்புகின்றவர்களுக்கான இணையதளமிது
Unit I: Elasticity
Hooke’s law – stress - strain diagram – elastic moduli – relation between elastic constants – Poisson’s ratio – expression for Poisson’s ratio in terms of elastic constants – work done in stretching a wire and twisting couple on a cylinder – rigidity modulus by static torstion – torstional pendulum – rigidity modulus and moment of inertia – cantilever – expression for bending moment – expression for depression – non uniform and uniform bending – theory.
Unit II: Surface tension and Viscosity
Surface tension - Excess of pressure over curved surfaces – application to spherical and cylindrical drops and bubbles – variation of surface with temperature – Jaegar’s method - Viscosity- rate of flow of liquid in a capillary tube – Poiseuille’s formula – experiment to determine Coefficient of viscosity of liquid – variation of viscosity with temperature.
Unit III : Diffusion and Osmosis
Diffusion – Fick’s Law Graham’s Law of diffusion of Gases – effusion- transpiration and transfusion- Osmosis and Osmotic pressure – Laws of osmosis – Osmosis and vapour pressure of a solution – Osmosis and boiling point of solution – Osmosis and freezing point – Osmotic plant.
Unit IV: Oscillation and Waves
SHM – damped and forced oscillation, resonance – wave function for progressive wave – derive expression for wave motion – velocity of longitudinal wave in a gas and transverse wave in string.
In a graph all the real numbers can be represented as points on a line positive to the right of the origin and negative to left. For representing the imaginary numbers however we introduce the j factor as an operator. We can convert an imaginary number into a real number by the use of this j operator. For example 1 x j x j = 1 x -1= -1. Thus +1 has been converted into -1 by the operator j which has the value of square root of minus one. The fig.(a) shows that +1 can be converted into -1 by turning the line 01 through 180 degrees.
1.1. Heat and temperature-1.2 Thermometry-1.2.1 Different of thermometric scales-1.3 Types of thermometers-1.3.1 Calendar’s constant pressure air thermometer-1.3.2 Jolly’s constant volume air thermometer-1.3.3Constant volume hydrogen thermometer-1.3.4 Thermoelectric thermometer-1.3.5 Platinum resistance thermometer-1.4 Thermistor