Rabina Kadariya 
What Are SI Units? SI Units are an important part of the measurement of physical quantities. Measurement is the foundation of physics. So, to make the measurement system easily understood by everyone, a common standard system was built, called the … Read more
Physical quantities are the language of physics to describe measurable quantities. Physics always deals with measurements and interactions, and these must be accurate and precise. So, to give a meaningful measurement, the results are expressed in numerical values and units. … Read more
Introduction and Definition of Solar Water Heater A solar water heater is a heating device based on solar energy. In the past, we used fire from wood or gas stoves to boil water. After the development of technology, induction and … Read more
Introduction and Definition of Solar Cooker A solar cooker is a cooking appliance that is based on solar energy. We generally cook food using gas, stoves, induction, etc. Moving further back, we were dependent on firewood, coal, kerosene, etc. Unlike … Read more
Introduction and Definition of Photovoltaic Cell Photovoltaic cells (PV cells) are modern devices that directly convert sunlight into electricity. They are also called solar cells. Solar panels are the most popular applications of photovoltaic cells. The word “photovoltaic” is composed … Read more
Introduction and Definition of Solar Energy Harvesting Solar energy harvesting is a modern renewable energy technique that collects the sunlight and converts the energy for other usable purposes. The maximum possible energy to the Earth comes from the Sun. Therefore, … Read more
Introduction and Definition of Einstein’s Mass–Energy Relation Einstein’s Mass–Energy Relation is one of the most important theories in physics. It was given by Albert Einstein in 1905 in his Special Theory of Relativity. This theory states that mass and energy … Read more
Introduction and Definition of Thermonuclear Fusion When nuclei are freed from an atom and made to combine, a reaction takes place called thermonuclear fusion. Here, the word ‘thermo’ means heat, and ‘nuclear’ means the nucleus. The reaction also takes place … Read more
Introduction and Definition of Non-Renewable Energy Sources Non-renewable energy sources have been recognized since ancient times. They are also found in nature, but sadly, their availability is limited. Non-renewable energy sources undergo geological processes that require a very long time, … Read more