physics models for exhibition
Concept / Principle: This project works on the principle of photoconductivity — using an LDR (Light Dependent Resistor).The LDR’s resistance decreases when light falls on it and increases in darkness.This change controls a transistor or relay circuit, which automatically turns ON the LED (street light) at night and OFF during the day. Main Concept:LDR senses … Read more
Concept / Principle: This project is based on infrared motion detection — it senses changes in infrared radiation (heat) caused by a moving object like a human body.When motion is detected, it activates an LED light and a buzzer, simulating a security or automatic light system. Scientific Principle: Infrared sensors detect IR radiation emitted by … Read more
Aim / Objective To test and identify materials as conductors or non-conductors of electricity by checking whether they allow electric current to pass through them. Materials Required Model Construction / Steps 1️⃣ Base Setup 2️⃣ Circuit Setup In simple terms:Battery (+) → Switch → LED & Buzzer → Test Wire A → Material → Test … Read more
Aim / Objective: To demonstrate how the rotation of the Earth causes day and night, using a simple model with a Sun (LED light) and a rotating Earth ball. Materials Required: Working Principle: Procedure: Observation: Conclusion: The model effectively shows that day and night are caused by the rotation of the Earth on its axis.It … Read more
Aim / Objective: To demonstrate how a two-way switch can control the operation of electrical devices like LED lights or a DC motor from two different locations. Materials Required: Working Principle: A two-way switch allows control of a circuit from two different points. Procedure: Observation: Conclusion: The model shows how two-way switches allow electrical devices … Read more