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Old 11-25-2005, 06:21 AM
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Default Grade 8 Science Project- How much light causes the flash of a camera to give Red Eye?

My science project is about finding the amount of light which causes red eye. I am going to be using a room with 3 diiferent lights. I am going to take a picture of someone with all the lights on , 2 of the lights on, then one light on , then no lights . This is the first time im doing a science fair project and i need help on how exactly to use the scientific method and how to wisely pick the varibales ,constants ,and controls.

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Old 11-29-2005, 04:29 PM
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why doesnt anyone reply to me i really need help!
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Old 12-01-2005, 08:16 AM
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Default Light Intensity and Red Eye

Perhaps your hypothesis could be phrased as follows:

Lighting intensity above [ ] lumens causes red eye in photographs. However, you would need a photometer to measure the lighting intensity. You should increase the number of lit bulbs (rather than decrease them). Also, I suspect that you will need more than 3 lamps.

Constants should include:
1. position of the lights
2. position of the photometer
3. using the same camera
4. position of the camera
5. settings on the camera (ISO, shutter speed, aperture settings etc.)
6. room/location/temperature/external lighting conditions
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