Overview of Radiation and Radiography

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In summary, the conversation is about an individual's surprise at finding a thread about industrial radiography on a physics forum, as many people they have spoken to are not familiar with the field of non-destructive testing (NDT). The conversation covers the history, present state, and future direction of radiography, as well as the physics behind it, equipment and materials used, techniques and calibrations, and advanced techniques such as real-time radiography and computed tomography. Safety considerations are also mentioned.
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Introduction to Radiographic Testing

http://www.ndt-ed.org/EducationResources/CommunityCollege/Radiography/cc_rad_index.htm

Introduction
History
Present State
Future Direction

Physics of Radiography
Nature of Radiation
X-Radiation
Gamma Radiation
Activity
Decay Rate
-Carbon 14 Dating
Ionization
Inverse Square Law
Interaction of Radiation and Matter
Linear Attenuation Coefficient
Half-Value Layer
Sources of Attenuation
-Compton Scattering
Geometry Unsharpness
Filters in Radiography
Scatter/Radiation Control
Radiation Safety

Equipment & Materials
X-ray Sources
Radio Isotope Sources
Radiographic Film
Exposure Vaults

Techniques & Calibrations
Imaging Consideration
Contrast
Definition
Radiographic Density
Film Characteristic Curves
Exposure Calculations
Controlling Quality
Film Processing
Viewing Radiographs
Radiograph Interp - Welds
Radiograph Interp - Castings

Advanced Techniques
Real-time Radiography
Computed Tomography
XRSIM
 
Science news on Phys.org
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I'm surprised to find a thread about industrial radiography on this physics forum! I'm in the industry as well and most people I've spoken to haven't heard of NDT. It's neat to come across information about it on here.
 

1. What is radiation?

Radiation is energy that is emitted in the form of particles or waves. It can come from natural sources like the sun, or it can be man-made for various purposes such as medical imaging or power generation.

2. How is radiation used in radiography?

Radiography is a medical imaging technique that uses radiation to create images of the internal structures of the body. X-rays, which are a form of radiation, pass through the body and are absorbed at different rates by different tissues, allowing for the creation of an image.

3. Is radiation dangerous?

Exposure to high levels of radiation can be harmful and even potentially fatal. However, the amount of radiation used in radiography is carefully controlled and kept at low levels to minimize any potential risks. The benefits of using radiation in radiography far outweigh the potential risks.

4. What are the different types of radiation used in radiography?

The most commonly used types of radiation in radiography are x-rays, gamma rays, and radio waves. Each type of radiation has different properties and is used for different purposes in medical imaging.

5. How is radiation exposure monitored and regulated in radiography?

Radiographers and other medical professionals who work with radiation are trained in safety measures to minimize exposure to themselves and their patients. Radiation levels are also regularly monitored and regulated by government agencies to ensure that they are within safe limits.

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