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A: A photocell has the property to change resistance as photon hit its surface that cause a change in resistance with current is flowing a voltage is generated
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Why does motion sensor can't detect in very dark area?
Because motion sensors sense the movement of light, so if its dark, it cant see.
How are light sensors used in cars?
To automatically turn in the headlights after dark.
Why can't you see in the dark?
Your eyes basically sense light bouncing off stuff, so if there's no light, there's nothing for them to sense - we call that "dark".
Where is light sensors used?
it is used in cars to control if its dark yet to turn on the lights
Where are light sensors used?
light sensors are used in cars, televisions and computers. there are different types of light sensors.
What do light sensors do?
Light sensors measure the number of photons or the energy of light hitting the sensor.
What do light sensors measures?
Light sensors measure the number of photons or the energy of light hitting the sensor.
Where are LDRs used?
LDRs (light-dependent resistors, also known as photocells a, can be used for most light-sentsitive applications like "is it light or dark out?", "is there something in front of the sensor that would block light?", "is there something interrupting a laser beam?" (break-beam sensors), or "which of multiple sensors has the most light hitting it?"
What are light sensors used for?
Light sensors are devices that are designed to detect light. There are several different types and styles of light sensors, each of them unique and having their own specific and useful uses.
What does the sun have to do with photography?
The sun and other lights are what go though the camera and to the sensors that record the image. The lighting determines how light or dark the image is... etc.
Do cnidarians have sight?
Cnidarians do no possess eyes for sight, though many of them are able to sense light vs dark.
How Did The Camera Used To Work?
Film cameras used to focus light on a light sensitive surface called film which was then put in a solution called developer that caused the image to appear. If the picture was to be printed the image on the film was negative, meaning the dark areas were light and the light areas dark. If it was to be projected onto a screen the images were positive -- like they appear to your eye. Digital cameras focus the light on light sensitive electronic sensors, then the computer in the camera interprets the information from these sensors and converts it into colors. Otherwise film cameras and digital cameras work about the same way.
