e books

One of the biggest risks of space technology is collisions with other satellites. Even small objects can cause damage to anything in their path. The ISS is used to study some of these risks. NASA also has to consider the possible health risks of humans traveling in space. But can the technology really be a … Read more

Mobile phones use radio waves to transmit information. These signals are called radio waves, and they are sent from a base station to the user’s cellphone. The range of base stations is limited, so users must stay within a certain area. This area is called a cell. The mobile network operator deploys thousands of cells … Read more