| Visualize any motion with nothing more than an LED light and a digital camera |
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Light traces |
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The picture on the left was taken with a regular digital camera set to an exposure time of 2 seconds. The line you see was created by an LED light attached to a rolling water bottle. You can use any small light source to make the trace of a moving object visible (bicycle light, flash light, key light). Just attach the light to the object, and make sure the room is completely dark. Then take a long exposure picture of the moving light using your Digi Cam (exposure time: 1 to 10 sec, or more if you can). It's even more fun to go further and analyze the speed of the object! To do that, use a fast blinking LED light (such as the Inova pulsed LEDs you can buy at Target Stores for $7). The distance between the dots is a measure of speed. I am happy to host your pictures on this page. Check out the galleries and have fun guessing the type of motion that caused the Light Trace (sebastianm@exploratorium.edu)! Sebastian
TI Light Traces Photo Pool on FlickrWe collect all the pictures on Flickr, a web page that allows you to publish your pictures on the web and share them with others in a Photo Pool. Have a look and join the Photo Pool.
Galleries
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