Ebbinghaus illusion
The Ebbinghaus illusion refers to an optical illusion in which a stimulus appears larger that its surroundings. Its appearance depends on the perceived size of the surrounding objects and the retinal size of the stimulus. The flash-lag effects, which cause objects to appear similar at later times, confirms that size perception. In this study, participants were shown two sets of four identical surrounding disks at different timings relative to their locations on the retina. The flash-lag effect occurred when the size of central disks varied from one side to the other.
FAQ
Which is the most mysterious spot on Earth?
Antarctica is considered the most mysterious area on Earth.
Why is this place so amazing? Because it's unlike any other place in the world.
It is remote, isolated, and extremely difficult to visit. It is not what you see.
These wild animals are also found in this natural wonder.
Let's look at how this extraordinary destination became so mysterious.
Antarctica: The South Pole
No one knows exactly why Antarctica was named Antarctica. Some believe it means "land of ice." Others believe it comes out of Greek mythology.
In ancient Greece, Antarktis was the name given to the island where Zeus' twin brothers were born. According to legend, one twin was born in winter. Thus, the term antarctic.
Others believe the name was derived from the Greek words tropos, which means turn, and anti, meaning against. This would mean that the land was turned away by the sun.
Whatever the reason, Antarctica has always held a special fascination for people.
It is the driest, windiest of all continents. It is too cold for trees, plants and animals.
And yet, this frozen wasteland is teeming with life.
Here, 90 percent live of all species of living things. It is home to approximately half of all world's animal and plant species.
And what makes Antarctica such a unique environment? Here, water is frozen into ice rather than vaporizing into the air.
This causes large masses to form of ice which float high above the ground.
These glaciers are responsible for covering 80% of the continent. They continue to grow in size each year.
The Antarctic ice has grown 60 feet so far since 1960.
The sea level could rise to 200 feet if the melting continues. It could result in massive flooding all over the world.
However, not all scientists believe this to be bad news. Global warming may be beneficial for some scientists. According to scientists, global warming could be good for us because the melting of the ice sheets will accelerate, which can lead to floods that release toxic chemicals into our soil and bodies.
However, others caution that this theory sounds a lot like a plot in a science fiction movie.
What is your most secretive community?
This question might surprise you. It could even make you uncomfortable, because it challenges how reality is perceived and lived. But there is a reason why this place exists. And it is not what you would expect.
The ancient Greeks called it the City of God. According to the Bible, it was called the City of Destruction.
It is also called Kashi in India (Kashmir). It is also called Novgorod in Russia.
It is known as The Town That Disappeared in America.
A small community of 1200 people in western New York State vanished. No bodies, cars, houses, nothing was left behind except a road sign pointing to its former location.
This little community vanished and no trace remains to indicate where or when it disappeared. Some say it was swallowed up by the Earth. Others say it was destroyed in a meteorite collision. Some claim that it was destroyed by a meteorite strike. Others still believe it was stolen away by aliens.
Whatever happened, the residents of this once-thriving community are convinced that their town isn't gone forever. They had just moved to another town.
There's even a website that tracks the disappearances and recoveries of Zugspitz.
You might be wondering where this town went. It's in Switzerland.
You can find Zugspitze at the border of Austria and Germany. Just beyond the summit of the mountain is a huge lake called Lake Zugspitze.
It has always fascinated and astonished me to see how many towns have vanished but still exist. Why does some vanish while others remain? I decided to investigate.
I wanted to know more about the mysterious disappearing towns. What causes a community to disappear? How can one place vanish from existence?
There are several theories behind the disappearing of towns. One theory is that a city disappears after all buildings have been demolished. Another theory says that the town just moves. A third theory states that the town didn't exist at all.
Although theories may be a bit speculative, it is a fact that numerous towns have been destroyed by the elements. This video explores the history of these towns and examines their current state.
What dark secrets are there in Hollywood?
Hollywood is filled with secret societies. Some are cult-like groups where members follow strict rules and rituals, while others are simply clubs for those who share common interests.
However, there are many other criminal organizations that hold much of the industry's power. These include the MPAA (Motion Picture Association of America), the organization that sets film ratings and RIAA(Recording Industry Association of America), the company that sets music licensing fees.
Numerous unions and guilds also represent actors, directors, writers, producers, etc. Many of the major TV networks and movie studios are owned or controlled by large corporations.
It is obvious that, no matter how secretive or obtuse a group appears, someone knows exactly what they do. But that doesn't mean we should fear them.
Instead, embrace them. Because they give us information that allows us to make better decisions.
They tell us what movies will likely succeed, what songs will be popular, and what books will best sell.
They are, in short, what help us choose what we will watch, read and listen too.
We can trust them and can disregard their advice if it is not in line with our preferences.
We choose to ignore them and they become even more powerful. They become the ultimate arbiters of taste.
If you don't like their words, you can choose to ignore them.
Let's take a closer look at some of the less-known, yet still very real Hollywood secret clubs.
And you'll understand why they're so crucial.
How does the brain control the functions in your body?
The brain sends messages to other organs and muscles to ensure they work together. Everything in your body is controlled and managed by your brain. It tells you your stomach to digest food; your lungs to inhale air; and it tells you your arms and legs how to move.
Your brain is made up billions of nerve cell networks connected in groups known as neurons. Neurons communicate by sending electrical signals, called action potentials, on axons. Every neuron has an outer cell membrane that surrounds its nucleus. Channels within the membrane allow ions such potassium and sodium to enter and leave the cells. The electric charge that causes the neuron's fire is created by ion movement.
Neurotransmitters are chemicals released when a neuron fires. Neurotransmitters can bind to receptors at the second neuron. They open ions channels, allowing ions to move in and outside of the channel. As a result, the second neuron fires too.
Neurotransmitter releases occur when a presynaptic neurons receives an input from another neuron. The impulse travels along the synaptic pathway that connects both neurons. The transmitter binds with the receptors of the postsynaptic nerve, activating the firing of the postsynaptic neurons.
The nervous system relies on neurotransmitters for communication. They are also responsible for coordinating activity between various parts of the brain.
Statistics
- The average human adult male heart rate is between 70 and 72 beats per minute, while the average for adult women is between 78 and 82 beats, which is significantly faster, according to 2014 published in the Journal of Clinical and Diagnostic Research. (romper.com)
- In one 2014 study published in the Archives of Medical Science that sought to study the prevalence of these mites, research showed that 41% of the people had them hanging out in their eyelashes. (romper.com)
- Your mouth makes a lot of saliva every day It might seem like way too much, but your salivary glands typically produce anywhere from 0.5 and 1.5 liters a day, according to a 2009 study published in the Journal of Medicine and Life. (romper.com)
- A 2012 paper published in the Proceedings of the National Academy of Sciences reported that people blink about 15 to 20 times each minute, meaning, if you do the math, you spend about 10% of the time that you're awake blinking. (romper.com)
- "It is estimated that 75% of people have at least mild gum disease, with the most common symptoms being bleeding when brushing, bad breath, and dark and swollen gums," Dr. Ron Baise, a London-based dentist, tells Romper. (romper.com)
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How To
American history is full of secret societies and clubs
The secret societies and clubs in American History are fascinating for many reasons. They are mysterious because of this. A second reason is their impact on society.
Secret societies and clubs have been used throughout America’s history to spread ideas that would otherwise be taboo. Anti-Semitism is one example of such ideas. These groups also helped spread political ideologies such as communism and socialism.
The Ku Klux Klan was the most famous American group. This group was formed after the Civil War ended in 1865. It was created to protect white men against African Americans.
Other organizations that were created in this period include the Knights Templar (Freemasons), and Odd Fellows. These organizations shared the same beliefs and goals.
Another fascinating aspect of secret societies was that their memberships were often limited to males. Some women were members of these secret societies. These women included Emma Goldman. Margaret Sanger. And Susan B Anthony.
Not only the above mentioned groups, but also other secret societies didn't share the same ideals. In 1832, the Order of Skull & Bones was formed. Their goal was to create an elite group within the United States.