أرسل هذا في رسالة قصيرة: Development and implication of a two-tier thermodynamic diagnostic test to survey students' understanding in thermal physics

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