John Joly Photometer

AFTER you've done your research and concluded your experiments, it is time to prepare for the science fair. Ask specific questions about preparing for a science fair, including how to set up your display board, how to prepare a presentation, etc. (Please post questions about selecting a project or conducting your experiment by posting in the appropriate "area of science" forum.)

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Light Guy
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Project Due Date: January 20, 2011
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John Joly Photometer

Post by Light Guy »

Hello,

Do you know when John Joly invented the photometer? I've been trying to find it but can't.

Thanks
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Amber_MIT
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Re: John Joly Photometer

Post by Amber_MIT »

I've tried looking for a while too, and all the articles I've found only list the dates for his awards and a few other discoveries. Do you absolutely need the date in your paper? You could mention when he was born and died to give a range, or you could give a date for some of his awards.

I would also try looking up "photometer" in a real encyclopedia.
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