Light is needed by every creature in this world

Every creature in this world certainly needs the presence of light because light is a tool for vision to know the direction and purpose that must be passed. Though human animals also need it as mentioned above. It cannot be imagined if light is not present in this life, then darkness will always come to every creature, so if that happens the creature cannot see something he wants to see.  Some experts say that light is an electromagnetic beam that can be seen by the human eye. Or in other words light is electromagnetic radiation, both invisible and invisible wavelengths. While objects that emit light are called light sources. Reflection in the light by the light itself can be captured by the senses of humans and also animals so that with the guidance of light all that is around it can be seen clearly and precisely.  Then the experts added that the Light has several properties, such as Light traveling straight. Then experts prove that the light propagates straight, it can be seen from the sunlight coming in through the cracks or through the windows in your home. And if you observe the lights of a motor vehicle at night, the lights of the motor vehicle propagate straight. Lots of events that occur in life that can prove that light has properties that can propagate straight. Maybe you can also pay attention to the light contained in the candle as well as mentioned above.  Then there is also light. Light can penetrate clear objects, like the light of candles that are behind the window curtain. Then the light can enter a house through a window that has glass. Clear window glass can be penetrated by sunlight, if the window glass is closed by using black cloth then the light cannot penetrate the window glass, the event can prove the nature of the light that can penetrate the clear objects found around us. And of course there is still a lot of light that can penetrate certain objects in this life. When the time comes in the afternoon, every creature is in desperate need of light from the sun and when at night people will need light or moonlight that can illuminate this nature. And so are the others, the point in life is that it really needs light.