science working model
Introduction Traffic lights are one of the most important inventions in road safety. They control the flow of vehicles and pedestrians at intersections. The standard traffic signal has three colors: To explain this concept in a science exhibition, you can make a working traffic light model using LED lights, switches, and a battery. This model … Read more
Introduction DNA, or Deoxyribonucleic Acid, is the genetic material that carries instructions for the growth, development, and functioning of all living organisms. Its structure is a double helix – like a twisted ladder – made of sugar-phosphate backbones and base pairs (Adenine-Thymine and Guanine-Cytosine). To showcase this fascinating structure in a science exhibition, you can … Read more
Introduction The Water Cycle (also called the Hydrological Cycle) is the continuous process by which water moves through the Earth’s surface, atmosphere, and underground layers. It involves four main stages: Evaporation, Condensation, Precipitation, and Collection. To make this concept visually engaging, we can create a circular-shaped working model that uses a transparent sheet for rotation … Read more
Introduction Water is one of the most vital resources on Earth, but water pollution is a major global challenge. Untreated wastewater contains dirt, sediments, chemicals, and harmful microorganisms that are unsafe for consumption or irrigation. To address this, wastewater purification systems are used to remove impurities and make water usable. This project demonstrates a DIY … Read more
Introduction During rainfall, clothes left to dry on rooftops often get wet, causing inconvenience and extra effort. To solve this problem, this project demonstrates a Rain Cloth Collector Working Model that automatically moves a shade or roof panel to protect the cloth using blades as sensors and robo motors for movement. This model is innovative, … Read more