What does it mean jquery.ajax cache ( false )

I am trying to understand what is the behavior of the request if we specify cache:false,is there a difference if we will not specify cache:false ?

$.ajax({
  cache: false,
  type: "GET",
  data: "somedatehere",
  url: "somurl.php",
  success:function(response){
   //the response here.

}

});

Thank you in advance.

By setting the cache property to false jQuery will append a timestamp to the URL, so the browser won’t cache it (as the URL is unique for every request. See the documentation for details: http://api.jquery.com/jQuery.ajax/

Thank you @fretburner