- 
                  
Physics
 - 
                  
Dynamic Electriciity
 - 
                  
Age 14-18
 - 
                    
level: IX
 - 
                  
English
 
Author's Instructions
- 
                  
Physics
 - 
                  
Dynamic Electriciity
 - 
                    
Age 14-18
 - 
                    
level: IX
 - 
                  
English