Four sources told it. That when they had the plague in Cambridge, and he went down to his mother's farm -- because the university was closed -- he saw an apple fall from a tree, or on his head or something.
در چهار منبع راجع بهش گفته شده. که وقتی در کمبریج طاعون اومده بود، و نیوتن به خونه مادرش رفته بود -- چرا که دانشگاه تعطیل بود-- او دید که یه سیب از درخت پایین می افته، رو کلش یا یه جای دیگه.