science working model
Introduction Air pollution has become one of the most serious problems of our time. With the increase in vehicles, industries, and burning of fuels like coal and petrol, the air we breathe is becoming more and more dirty. Polluted air contains harmful gases such as carbon monoxide, sulfur dioxide, and nitrogen oxides, along with tiny … Read more
Introduction A water overflow alarm is an electronic device designed to prevent the wastage of water. It alerts people when a water tank becomes full, usually by producing a loud sound or turning on a light. This simple system helps in saving water, electricity, and avoids unnecessary mess caused by overflow. The device works using … Read more
Introduction Water is one of the most important resources for life, but fresh water is limited and many areas face shortages. To solve this problem, two important methods are used: rainwater harvesting and water purification. Rainwater harvesting means collecting rainwater and storing it for future use. The water is usually collected from rooftops or open … Read more
This 3D model demonstrates both Solar and Lunar Eclipses.The Sun, Earth, and Moon are represented by these three colored balls.In a Solar Eclipse, the Moon blocks the Sun’s light and casts a shadow on Earth.In a Lunar Eclipse, the Earth comes between the Sun and Moon, casting a shadow on the Moon.This model helps us … Read more
This is a 3D atom model showing its internal structure.The center or nucleus contains protons and neutrons, while electrons revolve around it in orbits. Each component is represented with colored balls and glowing LEDs, controlled using switches.This model demonstrates how atoms are structured and the role of subatomic particles. Video Construction Steps: Step 1: Prepare … Read more