Apple iPad textbook broke some books 2GB capacity limit

Apple's educational media conference today launched the iPad electronic textbooks, these textbooks ranging in capacity from 793MB to 2.77GB. For the average author, the Apple iBook Author e-book size limit creative 2GB, but many exceeded the limit of large publishers - Pearson Environmental Science - 793MB - National Chemical - 959MB - life on Earth, EO Wilson - 965MB - McGraw Hill Algebra - 1.09GB - McGraw Hill geometry - 1.22GB - McGraw Hill Physical S - 1.25GB - McGraw Hill Bio - 1.49GB - Pearson's Biology - 2.77GB.  source.MacX.cn compiled