أرسل هذا في رسالة قصيرة: A LABORATORY SCALE PHOTOELECTRIC EFFECTS APPARATUS TO DETERMINE A WAVELENGTH OF LIGHT FOR HIGH SCHOOL PHYSICS LEARNING MEDIA

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