Light Guy
Posts: 4
Joined: Thu Mar 04, 2010 8:26 am
Occupation: Student: 8th Grade

John Joly Photometer

Postby Light Guy » Wed Mar 17, 2010 10:33 am

Hello,

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

Thanks

Amber_MIT
Former Expert
Posts: 260
Joined: Sat Apr 21, 2007 5:16 pm
Occupation: Volunteer

Re: John Joly Photometer

Postby Amber_MIT » Wed Mar 17, 2010 3:20 pm

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.
Stuck? Check out our project guides!
Project Guide: http://www.sciencebuddies.org/science-fair-projects/project_guide_index.shtml
Advanced Project Guide: http://www.sciencebuddies.org/science-fair-projects/competitions_index.shtml

Amber Hess
Expert


Return to “Grades 6-8: Getting Ready for the Science Fair”