Challenge has finished
A publisher needs an image suitable for the cover of a high school chemistry book. The client imagines beakers and test-tubes but is equally interested in images of elements and compounds. The most important consideration is that the book not be confused with physics, biology or geology.
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Wednesday, 4th September, 2013 (GMT)
Wednesday, 11th September, 2013 – Tuesday, 17th September, 2013 (GMT)
Wednesday, 18th September, 2013 – Tuesday, 24th September, 2013 (GMT)
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Sparks caused by grinding steal. Depending on the ammount of carbon and other alloys, the spark styles(size, form, life span, color) can vary in appereance, making it possible to identify many sorts of steals without laboratory tests.
|Submitted:||Sunday, 15th September, 2013 18:40 (GMT)|
|Taken:||Saturday, 6th July, 2013|
|Focal length:||200 mm|
|Shutter speed:||1/25 sec|
|Notes:||Use of a bench grinder and a random piece of steal. Use of a tele zoom in order to keep the camera gear safe as well the worker working the grinder.|
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