X-rays are usually invisible lights when microscopic changes occur. It is a kind of electromagnetic wave that has very short wavelength, from about 10 microns to 0.1 microns. 

Because the X-ray wavelength is very short, its penetrating ability is very strong. X rays can pass through the muscles, but cannot pass through the bones. Medical X-ray is generally used as a human perspective to check the body's lesions and bones. It’s necessary to take effective measures when using X-ray, as it’s harmful to the human body. Currently, it usually uses tungsten as the shield material of X-ray.

 

 

In medicine, X-ray tubes are used for diagnosis, treatment, structural analysis, spectral analysis, and negative exposure. An inflatable X - ray tube is an early X - ray tube. After the high pressure, the gas in the pipe is ionized, and under the bombardment of positive ions, the electrons escape from the cathode and produce X rays after the impact of the target surface. According to the use of the tube, it often chooses tungsten as the target.

 

At the airport, X-ray is used to check if there are dangerous goods in the baggage of passengers. When the package passes through the machine, the screen shows what is in the bag. In ancient Egypt, people were wrapped up in cloth to keep bodies from rotting. The bodies wrapped in cloth are called mummies. Modern scientists have been able to use X light to look inside the mummies. 

 

The discovery of X rays is a great advance in physics and a great influence on our life. The high quality of tungsten provides a great guarantee for the use of X-ray.