do you know what is ldr (light dependent resistor)

Light Dependent Resistor (LDR) is a type of resistor that changes its resistance in response to changes in light intensity. It is also known as a photoresistor. The resistance of an LDR decreases as the intensity of light falling on it increases. This means that LDRs are commonly used as light sensors in electronic circuits. They are often paired with a microcontroller or other control circuit to detect changes in light levels and trigger other actions or responses. LDRs are commonly used in applications such as light-sensitive switches, automatic lighting control systems, and camera exposure meters. They are inexpensive and easy to use, making them a popular choice for hobbyists and electronics enthusiasts.

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[@Sunny-ng3fi]

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[@المستجيرباللهالقيرواني]

Regarding the geometric properties of the resist, is the external area of the resist (the brightness area) the only factor, or does its behavior differ with respect to thickness?

[@sgautomation402]

only area