EnergeticTech

 Sound Sound plays an important role in our daily life. It helps us to communicate with one another and express yourself. Sound is produced by vibrating the objects and it is carried in all directions with the help of a medium. Sound needs a medium to travel. It cannot travel in a vacuum. We hear sound through our ears. The eardrums of our ears sense the vibrations produced by a vibrating object and send them to the brain as the stimulus. This process is called a hearing. Frequency:  The number of oscillations or vibrations per second is called the frequency of oscillation. Noise Pollution:  The presence of excessive or unwanted sound in the atmosphere is called noise pollution. Major causes of noise pollution are sounds of vehicles, explosions including the bursting of crackers, machines, loudspeakers etc. Presence of excessive noise in the surroundings may cause many health-related problems e.g., lack of sleep, hypertension and anxiety etc. Plantation on the roadside an...

The Tradition of Orientalists:   Orientalists needed Indian scholars to teach them vernacular languages, local customs and laws and help them translate and interpret ancient texts. They believed that the ancient customs of the country and oriental learning ought to be the basis of the British rule in India. Education for Commerce:  It was believed that Indians would be able to understand the advantages of trade and commerce through European learning. Western influence would change the lifestyle of educated Indians so that they would readily accept British goods. What Happened to Local Schools:  Earlier, local schools or pathshalas were allowed to function without much interference. But after 1854, the British standardized the curriculum, imposed routines, established rules and ensured regular inspections of these schools. New Routines, New Rules:  The Britisher’s government-appointed officials who were made in-charge of four to five schools. Teaching was now accordin...

  Squares and Square Roots 1. If a number is multiplied by itself, the product that we get is called the square of the number. For example: 4 x 4 = 4 2  = 16                                                                 (16 is square of 4) 20 x 20 = 20 2  = 400                                                         (400 is square of 20) 3 5 × 3 5 = ( 3 5 ) 2 = 9 25   ( 9 25 ...