The working of an internal combustion engine is divided into four stages called four strokes of the engine and hence the engine is called a four stroke engine. By: Ashok Kumar! Created By School Address Email Class Arun Ganesh. G, Read More …

The overwhelming majority of car engines still employ the four-stroke cycle (four piston strokes per cycle), invented by Nicholas Otto in 1876. By: Ashok Kumar! Created By School Address Email Class Unknown Santipuram, Andhra Pradesh

Students will work in groups to create multimedia presentation software with regard to Optical Instruments.There are many types of optical instruments By: Ashok Kumar! Created By School Address Email Class P.R.Parthiban, J.Krishna Moorthy, R.Raja Sekhar, D.Sathish Kumar, P. Rajesh M. Read More …

Machine for converting energy into motion or mechanical work. The energy is usually supplied in the form of a chemical fuel, such as oil or petrol (gasoline), steam, or electricity. By: Ashok Kumar! Created By School Address Email Class Jam Read More …

When the position of a body continuously changes with respect to time and its surroundings, the body is said to be in motion. By: Ashok Kumar! Created By School Address Email Class kartik Chandra Behera Govt. Boys’ High School Bhuwaneswar, Read More …

If the forces acting on the body in the displaced position tend to restore it to its original position, the equilibrium is said to be stable. Example: pendulum of a clock, a right circular cone standing on its base, a Read More …

The metal which attracts certain other metals and shows the direction like magnetite is called as Magnet. This quality of a metal is known as magnetism. By: Ashok Kumar! Created By School Address Email Class Damayanti Behera Orissa 7th

Light is a form of electromagnetic radiation that causes the sensation of sight. By: Ashok Kumar! Created By School Address Email Class Kartik Chandra Behera Govt. Boys’ High School Bhuwaneswar, Orissa

We see things every day, from the moment we get up in the morning until we go to sleep at night. We look at everything around us using light. By: Vikrant Mishra! Created By School Address Email Class J. Thulasidevi Read More …

Light is a form of energy.Without light we can’t live in this world.We have the natural source of light,this sun.Tube lights and electric bulbs are the artificial sources of light.Many more facts about light can be studied in further slides. Read More …