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)
Capture date rules:
Maximum number of entries per user:
Maximum number of entries in challenge:
Fluorescein, Methyl orange acid/alkaline and Methylene blue.
|Submitted:||Wednesday, 11th September, 2013 14:16 (GMT)|
|Taken:||Tuesday, 10th September, 2013|
|Focal length:||4.9 mm|
|Shutter speed:||1/50 sec|
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