Laser amplifies the light intensity by the stimulated emission, There are different applications of laser in life either in the branch of applied science such as medicine, engineering and communication or in the branch...
Light is an essential form of energy, The Sun is the most important source of light energy, It is the main natural source, It gives us heat and light, and it provides the green...
The networks have harmful effects on people who suffer from the heart diseases, they cause electromagnetic pollution, when people use the cell phones to make the calls, the signals are transmitted back and forth...
The light waves The light is an external factor that affects the eye causing the sense of vision, The light waves are electromagnetic transverse waves that can travel through free space with velocity 300000...
