Old photos on Objectivity:    • Super Expensive Photos - Objectivity 55  
Silver Nitrate into a solution containing halides. Also some talk about photography and cloud seeding. Discussed by Professor Sir Martyn Poliakoff. Dr Samantha Tang did the experiments for us.

Silver on Periodic Videos:    • Silver - Periodic Table of Videos  
Gun Cotton:    • Gun Cotton (nitrocellulose) - Periodi...  

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