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If you mean naturally occurring illusions we usually say in the desert or other hot places. What happens in those cases is that the Earth's heat (which it gained from the Sun) is warming up the air closest to the ground. As in the case of most materials this heating causes the air to expand. So it becomes lighter or less dense.
It is the "less dense" that matters here because light travels in different paths when crossing from colder air into hotter air.
This behaviour of the light rays gives the appearance of an oasis or lake in the distance, but what you are really seeing floating is an upside-down picture of part of the ground in the distance, thus suggesting that it is water which is reflecting.
On a very hot day when you are travelling a very hot road where the ground rises and falls you can see what appears to be water on the road surface. Again this is due to hotter deflecting the light rays so that you see a reflection of part of the road above the real road.
What else can I help you with?
What are good questions to ask about optical illusions?
Questions asked about optical illusions; 1: What are optical illusions? 2: What types of optical illusions are there? 3: What effects do optical illusions have on the brain 4: What causes optical illusions?
Why were optical illusions made?
Optical illusions are naturally found in nature, but were not studied until 450 BC in Rome. Roman thinkers correctly surmised that people's senses could play tricks on them. Optical illusions were not studied in depth until the 1800s.
What is the difference between a mirage and an optical illusion?
All mirages are optical illusions but all optical illusions are not mirages.
What math category is Optical illusions?
Optical illusions may fall under the applications of Geometry, Topology and Graph Theory.
What are the three types of optical illusions?
Like when you are driving down the road on a hot day and up ahead in the road it looks wet, but when you get there it's not. That's a Mirage or an optical illusion.An example of an optical illusion due to refraction is the formation of rainbow caused by action of water droplets as prism.
What are good questions to ask about optical illusions?
Questions asked about optical illusions; 1: What are optical illusions? 2: What types of optical illusions are there? 3: What effects do optical illusions have on the brain 4: What causes optical illusions?
Where can you find cool optical illusions?
Optical illusions are a good way to pass time as they play tricks on the eye. Books of optical illusions can be found at almost any bookstore including Barnes & Noble, Books A Million or online.
Why were optical illusions made?
Optical illusions are naturally found in nature, but were not studied until 450 BC in Rome. Roman thinkers correctly surmised that people's senses could play tricks on them. Optical illusions were not studied in depth until the 1800s.
What is the difference between a mirage and an optical illusion?
All mirages are optical illusions but all optical illusions are not mirages.
What is the difference between and optical illusion and an illusion?
All mirages are optical illusions but all optical illusions are not mirages.
What is some information on optical illusions?
optical illusions are an object causing false impressions
What style of Art is Escher?
He used mostly the technique referred to as tesselation. He specialized in repeating patterns and optical illusions.
Does color have anything to do with optical illusions?
yes yes it does mixed and pattern colors are included in optical illusions
Who first used optical illusions?
The Ancient Greeks were the first people on Earth to use Optical Illusions.
Op Art is about creating visual illusions?
Op art is art about OPtical illusions. Actually, almost all optical illusions are referred to as opart
What math category is Optical illusions?
Optical illusions may fall under the applications of Geometry, Topology and Graph Theory.
What are some common optical illusions questions that people often ask?
Some common optical illusion questions that people often ask include: "How does an optical illusion trick our brain?" "Why do some people see optical illusions differently?" "Can optical illusions be used to study the brain?"
