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Sensors Project Coursework Plan Aim The aim of this project was to design and build a sensor that would detect changes in different shades of grey. I used an Light Dependant Resistor to measure the different intensities of light reflected from the shades of grey. I set up the LDR in a potential divider circuit with a 30k??resistor and the power source at 5V. Scientific Theory We can see objects in colour because our eyes detect coloured light reflected from or produced by the objects around us. White light is a mixture of colours. A black object absorbs all of the frequencies of light and does not reflect any of them back to our eyes that is why on a hot day black object will feel much warmer than a white object will. If you have different shades of grey they must reflect different amounts of light into your eyes. To test this I have...

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