Homonym: LDR (Resistor)
A Light Dependent Resistor (LDR) is an electronic component that changes its resistance based on the amount of light it receives. When light falls on the LDR, its resistance decreases, allowing more current to flow through it. This property makes LDRs useful in various applications, such as light sensors and automatic lighting systems.
LDRs are commonly used in devices like streetlights, which turn on at dusk and off at dawn, and in cameras for adjusting exposure settings. They are simple, cost-effective components that help automate responses to changing light conditions in many electronic systems.