ABOUT SHADOWS
Shadows are nothings, but it just black images of every opaque body made by stopping lights to pass through it.
Opaque objects is define as, all those object are said to be an opaque object from which no light can pass through it. e.g, tree, book, table, home, umbrella, car etc.
There are no fix shape and size of shadow of any opaque object, shadows can change their shape and size place to place, time to time. But we know that an opaque object cant change their shape and size during time or place change.
Do you know why size and shape of shadows change? The size and shape of the shadow depends on the angle at which the light is falling on the object.
Our shadow keeps changing in whole day. In the early morning it will be the longest and, when the sun is overhead there is little or no shadow at all. Why? The position of sun changes throughout the day, thus changing the angle at which the rays fall on the ground.In ancient time people tracked the length of shadows throughout the day to keep track of time. The world’s earliest clock was a sun clock.
But one thing is amazing that the color of every opaque objects shadows are same, weather object is colorful or plane or have one color only. All have the same color of shadow that is dark (colorless).
