أرسل هذا في رسالة قصيرة: Phase transition accompanied by transformation of an elusive discrete cyclic water heptamer to a bicyclic (H2O)7 cluster

  _____    __   __    _  __     ___      _____   
 |__  //   \ \\/ //  | |/ //   / _ \\   /  ___|| 
   / //     \ ` //   | ' //   | / \ || | // __   
  / //__     | ||    | . \\   | \_/ || | \\_\ || 
 /_____||    |_||    |_|\_\\   \___//   \____//  
 `-----`     `-`'    `-` --`   `---`     `---`