The bats Some animals use echoes to locate and identify the objects, The echolocation is used for navigation and for foraging (hunting) in various environments, The bats can use the phenomenon of sound reflection...
The states of matter All matters have a mass and take up space, the state of matter is one of the distinct forms that matter takes on, and there are four states of matter...
Lasers in communication Laser communications systems are wireless connections through the atmosphere, The light speed is the fastest speed than anything can travel, so laser communications and laser sensing are important in mortar defense...
Importance of measuring temperature We need to measure the body temperature to help us to know our bodies temperature, and help us to know the weather temperature which affects our life skills, Some processed...
