LATEST

Sunday, December 22, 2019

Scientific Laws - Part 2

SCIENTIFIC LAWS - PART 2

KEPLER'S LAW
Each planet revolves round the Sun in an elliptical orbit with the Sun at one focus. The straight line joining the Sun and the planet sweeps out equal areas in equal intervals. The squares of the orbital periods of planets are proportional to the cubes of their mean distance from the Sun.

LAW OF FLOTATION
For a body to float, the following conditions must be fulfilled:
•    The weight of the body should be equal to the weight of the water displaced.
•    The centre of gravity of the body and that of the liquid displaced should be in the same straight line.

LAW OF CONSERVATION OF ENERGY
It states that energy can neither be created nor destroyed but it can be transformed from one form to another. Since energy cannot be created or destroyed, the amount of energy present in the universe is always remain constant.

NEWTON'S FIRST LAW OF MOTION
An object at rest tends to stay at rest, and an object in motion tends to stay in motion, with the same direction and speed in a straight line unless acted upon by some external force.

NEWTON'S SECOND LAW OF MOTION
The rate of change of momentum of a body is directly proportional to the force applied and takes place in the direction in which the force acts.

NEWTON'S THIRD LAW OF MOTION

To every action there is an equal and opposite reaction.

NEWTON'S LAW OF GRAVITATION
All particles of matter mutually attract each other by a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

OHM'S LAW
It states that the current passing through a conductor between two points is directly proportional to the potential difference across the two points provided the physical state and temperature etc. of the conductor does not change.

PAULI EXCLUSION PRINCIPLE
It explains that no two electrons in the same atom or molecule can have the same set of quantum numbers.

RAMAN EFFECT
It is the change in wavelength that occurs when light is scattered by the atoms or molecules in a transparent medium.

TYNDALL EFFECT
The scattering of light by very small particles suspended in a gas or liquid.

No comments:

Post a Comment