> >Facts that are no longer true
Everything changes over time. And even the facts that you previously considered to be reinforced concrete may change over time. And there are some statements that were presented to you in school not quite correctly, because the truth can be much more complicated than a schoolchild can understand.
Below are the facts that have either changed over time or were incorrectly presented to you in the learning process.
Before: America gained independence on July 4, 1776.
Now: America officially became independent seven years later, in 1783.
Every year on July 4, Americans celebrate Independence Day in a big way. And even though the Declaration of Independence was signed on July 4, 1776, America was not yet free from British rule, until the Treaty of Versailles was signed on September 3, 1783. It was then that America became independent.
Before: Pluto is a planet.
Now: Pluto is not a planet.
From the late 1800s, they knew about the potential existence of the ninth planet.In 1906, astronomer Percival Lowell even began a research project aimed at discovering the mysterious Planet X.
In 1929, Clyde Combo began photographing stars in the constellation of Gemini, where the Planet X was supposed to be based on calculations. In 1930, Pluto was discovered and acquired the status of a planet.
But with the discovery in 2005 of Eris, which turned out to be the most massive trans-Neptune object, Pluto was transferred to the category of minor planets.
Before: diamond is the hardest substance.
Now: Boron nitride nanomaterial is harder than diamond.
American and Chinese physicists have created a special nanomaterial based on cubic boron nitride microcrystals, exceeding diamonds in hardness and other qualities.
Before: Salem witches were burned at the stake.
Now: in fact, they were hanged.
Even if you did not read Arthur Miller’s Stern Test, you were sure that the townspeople of Salem burned the witches on the stake. But, according to archivist Richard Trask, it didn't all happen that way. At that time, witchcraft was a criminal offense punishable by hanging, not burning at the stake.In Europe, however, witchcraft was considered heresy, and the perpetrators were burned. Maybe because of this, the confusion began.
Before: pyramids were built by slaves.
Now: the pyramids were built by Egyptian workers.
In culture, the myth is maintained that the pyramids were built by slaves. But recent archaeological discoveries actually prove that the pyramids were built by the Egyptians themselves. Workers were recruited from poor families. They enjoyed great respect and even earned crypts near the pyramids. Slaves would not be so treated.
Before: you can not fold a piece of paper twice more than seven times.
Now: American students have debunked this myth with toilet paper.
Students at St. Mark’s School, under the guidance of their mathematics teacher James Stuart Tanton, have acquired 16 kilometers of toilet paper and hellish patience. In seven hours, they folded the paper twice 13 times.
Before: The Great Wall of China - the only creation of man, which is visible from space.
Now: in fact, there are many such objects.
Rumors that the Wall of China can be seen not only from a spacecraft, but even from the Moon, refer to 1938.In 2003, the first Chinese astronaut debunked this myth. He said that the Great Wall is visible from space only under certain conditions, and besides it one can see major highways, bridges, airports and much more. But from the moon nothing is visible: only the blue and white sphere.