15 important laws of physics:
1. Archimedes Principle.
It states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces.
1. Archimedes Principle.
It states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially, is equal to the weight of the fluid that the body displaces.
2. Avagadro’s Law
In 1811 it was discovered by an Italian Scientist Anedeos Avagadro. This law states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.
In 1811 it was discovered by an Italian Scientist Anedeos Avagadro. This law states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.
3. 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.
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.
4. Newton’s Laws (1642-1727)
Law of Gravitation
Newton’s First law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of cooling
Law of Gravitation
Newton’s First law of Motion
Newton’s Second Law of Motion
Newton’s Third Law of Motion
Newton’s Law of cooling
5. Coulomb’s Law (1738-1806)
The force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled. The SI unit of electric charge, coulomb, is named after Charles Augustin de Coulomb who established the law.
The force between the two electric charges reduces to a quarter of its former value when the distance between them is doubled. The SI unit of electric charge, coulomb, is named after Charles Augustin de Coulomb who established the law.
6. Stefan’s Law (1835-1883)
The total energy radiated from a black body is equal to the fourth power of its absolute temperature.
The total energy radiated from a black body is equal to the fourth power of its absolute temperature.
7. Pascal’s Law (1623-1662)
- When pressure is applied to a fluid, the pressure change is transmitted to every part of the fluid without loss.
- Atmospheric pressure decreases with increase in height.
The SI unit of pressure is pascal which is named after Pascal.
- When pressure is applied to a fluid, the pressure change is transmitted to every part of the fluid without loss.
- Atmospheric pressure decreases with increase in height.
The SI unit of pressure is pascal which is named after Pascal.
8. Hooke’s Law (1635-1703)
This law states that the extension of a spring is proportional to the tension stretching it. Doubling of the tension results in the doubling of the amount of stretch.
This law states that the extension of a spring is proportional to the tension stretching it. Doubling of the tension results in the doubling of the amount of stretch.
9. Bernoulli's Principle
It states that as the speed of a moving fluid, liquid or gas, increases, the pressure within the fluid decreases. The aerodynamic lift on the wing of an aeroplane is also explained in part by this principle.
It states that as the speed of a moving fluid, liquid or gas, increases, the pressure within the fluid decreases. The aerodynamic lift on the wing of an aeroplane is also explained in part by this principle.
10. Boyles's Law
It states that temperature remaining constant, volume of a given mass of a gas varies inversely with the pressure of the gas.
It states that temperature remaining constant, volume of a given mass of a gas varies inversely with the pressure of the gas.
11. Charles's Law
It states that pressure remaining constant, the volume of a given mass of gas increases or decreases by 1/273 part of its volume at 0 degree Celsius for each degree Celsius rise or fall of its temperature.
It states that pressure remaining constant, the volume of a given mass of gas increases or decreases by 1/273 part of its volume at 0 degree Celsius for each degree Celsius rise or fall of its temperature.
12. 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.
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.
13. 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.
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.
14. Tyndall effect
The scattering of light by very small particles suspended in a gas or liquid.
The scattering of light by very small particles suspended in a gas or liquid.
15. Graham’s Law
It states that the rates of diffusion of gases are inversely proportional to the square roots of their densities under similar conditions of temperature and pressure.
It states that the rates of diffusion of gases are inversely proportional to the square roots of their densities under similar conditions of temperature and pressure.
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