Not to scale) A large effective focal spot (left) can be made into a... | Download Scientific Diagram
![File:Diagram of line-focus tube depicting relation between actual focal spot and effective focal spot, extracted from Fundamentals of X-ray; physics and technique (1944).png - Wikimedia Commons File:Diagram of line-focus tube depicting relation between actual focal spot and effective focal spot, extracted from Fundamentals of X-ray; physics and technique (1944).png - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/d/d8/Diagram_of_line-focus_tube_depicting_relation_between_actual_focal_spot_and_effective_focal_spot%2C_extracted_from_Fundamentals_of_X-ray%3B_physics_and_technique_%281944%29.png)
File:Diagram of line-focus tube depicting relation between actual focal spot and effective focal spot, extracted from Fundamentals of X-ray; physics and technique (1944).png - Wikimedia Commons
![Effect of Focal Spot on Resolution (Contact Radiograph) | Radiology | SUNY Upstate Medical University Effect of Focal Spot on Resolution (Contact Radiograph) | Radiology | SUNY Upstate Medical University](https://www.upstate.edu/radiology/images/education/rsna/radiography/focalspot/footfs3.jpg)
Effect of Focal Spot on Resolution (Contact Radiograph) | Radiology | SUNY Upstate Medical University
![Effect of Focal Spot on Resolution (Contact Radiograph) | Radiology | SUNY Upstate Medical University Effect of Focal Spot on Resolution (Contact Radiograph) | Radiology | SUNY Upstate Medical University](https://www.upstate.edu/radiology/images/education/rsna/radiography/focalspot/footfs4.jpg)
Effect of Focal Spot on Resolution (Contact Radiograph) | Radiology | SUNY Upstate Medical University
![The determination of the focal spot size of an X-ray tube from the radiation beam profile - ScienceDirect The determination of the focal spot size of an X-ray tube from the radiation beam profile - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S1350448715300706-gr3.jpg)
The determination of the focal spot size of an X-ray tube from the radiation beam profile - ScienceDirect
![The determination of the focal spot size of an X-ray tube from the radiation beam profile - ScienceDirect The determination of the focal spot size of an X-ray tube from the radiation beam profile - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S1350448715300706-gr1.jpg)