link to Movies in the Classroom   link to ClassBrain Home link to movies by studio link to movies by subject  Link to Parents and Teachers
 link to parent teacher  link to pre k - kindergarten  link to state reports  link to games  link to freedom files  link to corporate information
 link to ask classbrain

Last Updated: Jan 8th, 2011 - 16:45:13 


The Drake Equation Calculator
By ClassBrain staff
Aug 24, 2006, 21:04 PST

R - Rate of formation of suitable stars in our galaxy (aggregate number)

R =

fp - Percentage of those stars with planets

fp =

Ne -Number of planets per star that could sustain life like earth

Ne =

fl - Percentage of those planets where life actually develops

fl =

fi - Percentage of planets from fl with intelligent life

fi =

fc - Percentage of planets from fi where technology develops

fc =

L - "Lifetime" of communicating civilizations (years)

L =

R * fp * Ne * fl * fi * fc * L = N



N - Number of communicative civilizations

N =

© Copyright 2006 by

Top of Page



Search ClassBrain
Search WWW