<p>Hi Everyone. I have been studying for my Physics SAT Subject Test since the past few days using quite a few books including Barron’s, PR, Kaplan and Sparknotes. What I simply could not look over is the incredible similarity in contents between the PR Physics Book and the Sparknotes Online one. At places they are exact copies of each other, missing essential components together and son on. Have any one else felt that ?</p>
<p>And if yes who copied who ? Sparknotes online is owned by Barnes & Noble. So I believe they won’t use copyrighted stuff. But also the PR book is written by an MIT graduate. Comments.</p>