Shadow is always. in colours
Answers
Answer:
Shadow is always black in colour
Answer:
A shadow is an area where direct light from a relatively small source is blocked by some opaque object. If the source is genuinely the only light around, the shadow will be absolutely black, and will have no colour.
In practice, there are almost always other sources of light, because light is reflected from other objects, or scattered by dust particles in the atmosphere. The direct light casts the shadow, but the shadow is lit dimly by the reflected or scattered light, and so is not dead black. If the scattered light has a colour, like the blue of the sky, then the shadow will take on that colour. This is most easily seen on snow lit with brilliant sunshine; if you look carefully, the shadows are distinctly blue, in real life or in photographs.
Another situation where you can see a coloured shadow is during a total eclipse of the moon. The Earth’s shadow is considerably bigger than the moon, but the moon does not disappear in the sky; light from the Sun is scattered into the shadow by the Earth’s atmosphere. For the same reason that the setting sun is red, the scattered light is predominantly red, and the moon hangs in the sky looking spectacularly red.
Another place to see coloured shadows is where objects are being illuminated by numerous distinct coloured lights, such as typical rock band lighting. Each light source casts a shadow, but other light sources are throwing shadows in different places. If you look where the shadows partially overlap, you can see lots of different colours, each caused by the absence of one colour and the admixing of others.
In general, shadows DO have colours.