One of Bradbury's strengths as a writer is his ability to use images to convey a mood while also setting a scene.

Some examples of sensory details in the story are as follows: We get a visual sense of the African veldt the children watch obsessively through the description of the yellow sun beating down and the lion's yellow fur, which is compared to a French tapestry. The dust the Hadley parents can see on the veldt smells like paprika, and the view screen also sends out scents of cool water, lion grass, and the "rusty" smell of animals. Sounds include the "thump" of antelope feet in the distance and the "papery rustling" of vultures. Touch sensations are the sense of the heat radiating from the sun and the veldt, seemingly baking everything and causing Mr. Hadley to perspire.

As for taste, the meat the house prepares and cuts up and that Mr. Hadley eats is tasteless to him.

These are just a few of the examples of sensory imagery in this story, and as you read you will find more.

There are any number of details that come in the story, beginning with the feeling of heat that causes Mr. Hadley to start sweating and then the "wind of odor" that is generated by the "odorophonics" giving the impression of the animals and the grass and the watering hole that is out of sight.  Next comes the sights and sounds of the lions far away and then the scream of something they cannot see.

The sensory details give the reader the same impression that the nursery gives the Hadley's, leaving them concerned that perhaps this isn't just a constructed illusion.  The illusion of reality serves to support the importance of telepathy and its power, particularly in the case of the two young children, over the way that the adults have come to accept "reality" and are unwilling to believe that it could possibly be different or outside of their experience.

I suppose that the feeling of being hot is touch.  So we see this right off when George starts sweating as soon as the nursery turns on and becomes Africa.

Bradbury then describes the smells of the savannah in very graphic terms.  The lions and other animals smell like rust, the dust smells like paprika.

When Bradbury describes the lions coming towards George, we get sight and sound and even taste.

All of these details are important to the story because they make it seem so real.  The emphasize how the nursery is not just a dream or a projection.  It is so real that it affects all of your senses.