Beryllium is a lightweight, silvery-white metal that is known for its strength and stiffness. It is primarily used in aerospace applications, such as in the construction of aircraft and satellites, due to its ability to withstand high temperatures and resist corrosion. Beryllium is also an important component in X-ray equipment and various electronic devices. Despite its useful properties, beryllium can be toxic if inhaled as dust or fumes. This makes safety precautions essential when working with it. Proper handling and protective measures help prevent berylliosis, a serious lung disease caused by exposure to beryllium particles.