Light
Light is a kind of electromagnetic waveform energy that can be seen with the eyes. Light is also a basic measure of meter: 1 meter is light through the vacuum at 1 / 299,792,458 seconds. The speed of light is 299,792,458 meters per second. Light is needed in everyday life. The sun is a source of light on Earth. Green plants need light to make food. The properties of light are, light has a constant motion in all directions. The proof is that we can see a living light from all sides in a dark room. If the light is touched, the imagery produced by the light that has a straight motion can not be bent. But light can be reflected. The properties of light are, the light is fixed in all directions. We can see the firing lights from every direction in the dark room. If the light is light, the light is generated because the light is tight and does not bend. But light can be reflected.