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
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Principles of Accurate Image Projection - Intraoral Imaging: Basic Principles, Techniques and Error Correction - Dentalcare
A new measurement method of actual focal spot position of an x-ray tube using a high-precision carbon-interspaced grid
![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)