Q&A

Does fog cast a shadow?

Does fog cast a shadow?

Global fog does not cast shadows the way Light Fog does. Normally, lights are not visible in a render, which is probably a good default setting!

Why do clouds not make shadows?

If the vapor density is low, the clouds are transparent. Conversely, if the density is high, those clouds are opaque. So if they are opaque then they will definitely cast shadow. Clouds can be transparent, translucent or opaque, depending on the quantity of water vapor in it.

Why does air not have a shadow?

Uniform air itself cannot refract light and create shadows because the index of refraction does not differ anywhere. But, when different regions of air have different indices of refraction, the air can indeed bend light away from the forward direction and create a shadow.

Why are shadows of clouds not black?

Shadows of anything in general are not black because of scattered light. When light hits most objects, it scatters in all directions. So while a particular area may not be getting direct sunlight (or whatever light source you are using), it gets indirect light scattered from other objects nearby.

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Why do clouds make shadows?

Sunlight passing through a cloud is scattered in various directions. Some photons eventually find their way out the bottom of the cloud, some are reflected upwards, and some are absorbed, serving to warm the cloud. Since only a fraction of the light makes it to ground level, you have a shadow.

Do clouds make shadows?

The sun’s light is what heats the ground, which then heats the air above. Other things make shadows, too. Clouds make shadows when they pass in front of the sun. Less light is blocked when the sun is high in the sky.

Are shadows reflections?

Simply speaking, a shadow is an absence of light. If light cannot get through an object, the surface on the other side of that object (for example, the ground or a wall) will have less light reaching it. A shadow is not a reflection, even though it is often the same shape as the object.

How are shadows formed?

Shadows are formed because light travels in straight lines. Shadows are formed when an opaque object or material is placed in the path of rays of light. The opaque material does not let the light pass through it. The light rays that go past the edges of the material make an outline for the shadow.

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Can clouds make shadows in the sky?

These are called crepuscular rays, and are caused by clouds blocking the sunlight, their long shadows cast on haze and other particulates floating in our air. Towering cumulonimbus clouds threw their long shadows back, away from the Sun. Note that the shadows from different clouds are parallel to each other!

What causes shadows in the sky?

The bright areas are sunlight, the darker areas between them are the shadows of the clouds which are blocking the sun from you. Since the gasses of the atmosphere are transparent, the shadows are actually being seen due to dust and haze suspended in the air being illuminated or not.

Clouds do make shadows when they are between the sun and the ground; if the sun is not directly behind a cloud, a shadow is not created. This is the first thing about shadows; there has to be a light source, an object that blocks the light source and a surface onto which the light source projects.

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Can air Make Shadows?

Yes, air can indeed make shadows. A shadow occurs when an object in a light beam prevents some of the light from continuing on in the forward direction. When the light beam hits a wall or the ground, a darker shape is visible where less light is hitting the surface.

How do clouds get their shapes?

Clouds get their shapes from the air that surrounds them. Air temperature is always changing, affecting the shapes of the clouds. Since clouds are made up of millions of tiny pieces of water, when they are really high up in the sky where the air is very cold, the water droplets freeze into floating ice crystals.

What is the difference between a shadow and light?

A shadow occurs when an object in a light beam prevents some of the light from continuing on in the forward direction. When the light beam hits a wall or the ground, a darker shape is visible where less light is hitting the surface. Both the light and the shadow, which is just the absence of light, travel to the surface at the speed of light.