## Posts

### Moving charges in electric and magnetic fields notes

Moving charges in Electric and Magnetic fields Magnetic flux:     The total number of magnetic field lines of force passing through a closed surface are called magnetic flux    It is denoted by Φ B              Unit:   weber Intensity of the  magnetic field ( H ):     Intensity of the magnetic field at a point in a magnetic field is the force experienced by one unit north pole paced at that point .     Unit:  A/m Magnetic induction or Magnetic flux density ( B ):     The number of magnetic field lines of force passing through a  unit area is called magnetic induction or magnetic flux density.    Magnetic induction  B =   Φ B /A      Unit:  weber/ m 2 or tesla  or  gauss (in CGS) Force on a charged particle in an electric field According to the Intensity of electric field definition, the intensity of the electric field ( E ) at a point in an electric field is the force experienced by a unit positive charge (q) placed at that point.

### Rontgen

WILHELM CONRAD RONTGEN Born On: 27th March 1845. Died On: 10th February 1923.     Wilhelm Rontgen born in Lennes, Germany. His father is a farmer and his mother is a homemaker. He studied in Holand. He did Ph.D. at Zurich University , Switzerland. After his Ph.D. he joined as a Physics professor at Fritzberg University . While working in this university he accidentally identified X-rays. For this discovery, he got Noble prize in the year 1901. He the first Physicist who got Noble Prize in Physics. X-rays:             Very high-frequency electromagnetic radiation (more frequency than UV rays)  Applications of X - rays :         X - rays are having plenty of uses/applications. Those are To identify flaws in the heavy machines. To identify the uniform thickness of metal sheets, tennis balls, etc. Using to remove the stones in the kidneys. Using in cancer treatment. To identify the structure of the crystals. A useful tool in crystallography research. Using X

### Generate Electricity from Waste Water

To Generate Electricity from Waste Water   in Multi-storied Buildings Summary:        In   the modern world, the lifestyle of human beings has changed a lot. A large number of people now live in multi-storied apartments . Each of these apartments uses a huge amount of water and leave it as wastewater to the drainage. We are suggesting to store this waste in the middle floor in tanks instead of leaving it to the drainage. This stored water when allowed to flow from a height will have enough kinetic energy to rotate the turbine and generate electricity. The electricity, thus, produced can be used common lights and elevators. Further, the water coming out of the turbine can be purified and reused in the toilets. The non-purified water can be soaked in the pits to increase the level of groundwater . The scarcity of power and water is felt in urban areas all over the world more so in developing countries. The suggested plan will enable us to solve the problem to some extent and

### BENJAMIN FRANKLIN

ABOUT BENJAMIN FRANKLIN BORN IN THE YEAR: 17th January 1706. DIED ON: 17th April 1790.         Benjamin Franklin was an American Scientist . He is not only a Scientist but also an Inventor, Political Philosopher , Statesman , and diplomat . He involved in the development of the constitution so he is also called one of the fathers of the United States. Benjamin showed more interest in the  Chess game. He did more research on electricity. His father is a small businessman and poor. Even then with his hard work and innovative thinking he becomes more popular at that time. Benjamin Contributions in Science: He studied about thunders and electric charges in the clouds. Benjamin designed Lightning Conductors to save the big buildings form the thunders. Still, we are using lightning conductors as an earthing wire (metal wire) to save from the thunders. He invented a wood burning Stove . Benjamin supported the wave theory of light proposed by Huygen. Benjamin identifie