X-Rays

X-rays are a form of electromagnetic radiation, similar to visible light but with much higher energy. They were discovered by Wilhelm Conrad Roentgen in 1895. X-rays have a shorter wavelength than visible light, which allows them to penetrate materials, including the human body.

Properties of X-rays:

1. Penetrating: X-rays can pass through soft tissues, but are absorbed by denser materials such as bones and metal.
2. Invisible: X-rays cannot be seen by the human eye.
3. Ionizing: X-rays have enough energy to remove tightly bound electrons from atoms, creating charged particles (ions).
4. Can be captured on film or digital detectors: X-rays can be used to create images of the inside of objects, including the human body.

Uses of X-rays:

• Medical Imaging: X-rays are commonly used to create images of the internal structures of the body, such as bones and organs.
• Industrial Testing: X-rays are used to inspect the integrity of welds, castings, and other industrial components.
• Security Screening: X-ray scanners are used to inspect luggage and cargo for security purposes.

Study Guide:

Here are some key points to remember about X-rays:

1. Who discovered X-rays?
2. What is the main property of X-rays that allows them to be used in medical imaging?
3. List three common uses of X-rays.
4. Explain how X-rays are produced.
5. What safety precautions are important when working with X-rays?