PHYSICS

Physics - Originally, natural sciences or natural philosophy, The science of dealing with properties, changes, interaction, etc., of matter and energy

Aristotle - is regarded as the first person to attempt physics, and actually gave physics its name

Aristotelian Physics was based on logic

Galileo Galilei - was one of the first to use the scientific method of observation and experimentation. He laid the groundwork for modern science.

Mechanics - the study of motion

Sound and Wave Motion - deals with the transfer of energy by means of disturbances through various media

Heat/Thermodynamics - introduces the concept of temperature, another form of energy l deals with thermal expansion, heat capacities of substances, changes of state and heat transfer

Electricity and Magnetism - Deals with the concept of the electric charge, the flow of electric charge

Optics - Concerned with the fundamental concepts of electromagnetic waves, absorption and transmission

William Thomson - British mathematician and physicist, Also known as LORD KELVIN

UNIT - The process of comparing the quantity to be measured with some given standard quantity

Direct Method - it is done by directly comparing the quantity to be measured with some given standard quantity

Indirect Method - it is done by not comparing the quantity to be measured with some given standard quantity

Physical Quantities - any number that is used to describe a physical phenomenon

Fundamental Quantities - they are the simplest type of quantities and cannot reduce further

Derived Quantities - quantities which are derived from the combination of one, two, or all three of the fundamental quantities

Scientific Notation - A convenient way of writing numbers of any magnitude and of expressing their accuracy by using only figures which are significant

Significant Figures - the digits which indicate the number of units one is reasonably sure of having counted in making a measurement

SINE LAW - The sides of a triangle are proportional to the sines of their opposite angles

LAW OF COSINES - The square of any side of a triangle equals the sum of the squares of the other two sides minus the twice product of these two sides times the cosine of their included angle 4

Rectangular Resolution - This is done by resolving all vectors into rectangular components along any convenient pair of axes and then combine these into a single resultant

Equilibrium - A body which is in equilibrium is either moving at constant velocity in a straight line, or it is not moving

Equilibrant - A single force that must be combined with the set of forces to maintain the system of equilibrium

Torque - the product of the force and the perpendicular distance from the axis to the line