PCSL Messages 146 Reaction score 0 Thread starter Feb 19, 2012 #1 Are they the same thing? I know biconcave has R1=negative and R2= positive. edit: Thanks for any help.
Are they the same thing? I know biconcave has R1=negative and R2= positive. edit: Thanks for any help.
Redbelly98 Staff Emeritus Science Advisor Homework Helper Insights Author Messages 12,179 Reaction score 186 Feb 20, 2012 #2 Hi, Yes they mean the same thing, a lens that looks like this: )( [/size]