Can you really see the Great Wall of China from space?
Do we only use 10 percent of our brain power?
Here’s the truth behind 15 lies your school told you.
I’m Lisa and today I will be your narrator
No. 15 – Humans didn’t evolve from Apes.
We’ve all probably seen the chart
one with the ape,
which gradually stands up to become a human
Without giving it a second thought.
Although humans and apes such as Chimpanzees
are 99 percent genetically identical,
we didn’t evolve directly from them,
but share a common ancestor. Huamns and aped derived from this common ancestor
around 6-8 million years ago.
No. 14 – An Apple never fell on Isaac Newton’s head.
The story that Isaac Newton was sitting around his garden one day
when an apple fell on his head,
and he came up with the theory of gravity
is more of an exaggeration.
There is no record of this from Newton.
Although he told the story to friends,
and likely embellished it over time.
In fact, Newton spent two years
Working on his theory of ‘Universal Gravity’.
No. 13 – The Pilgrims came to America for more than just religious freedom,
It is true that the pilgrims left England
as they were persecuted for trying to separate from the Church of England.
These ‘separatists’ then went to Holland,
where they did enjoy religious freedom.
The part often left out of the story is that they
is that they decided to make the trip to America,
because work was hard to find and they worried
their kids were loosing their English heritage.
No. 12 – Christopher Columbus never proved the Earth was round.
The story goes that Columbus was at odds
with the Church who thought the Earth was flat,
so he set sail to prove them wrong.
The truth is that most intelligent people
of his time already knew this to be true,
and he was really just trying to see how large the oceans were.
Even 2000 years earlier, back in Ancient Greece,
it was written that the Earth was a ‘Sphere’.
No. 11 – Einstein never failed math.
It is often repeated that Einstein wasn’t a great student,
even failing math.
Maybe this helps some struggling students feel better,
but sorry to say, it isn’t true.
He received mostly good grades,
and by age 11 was reading college level physics books.
He did however flunk an entrance exam,
but not the math part.
Again – sorry.
No. 10 – Slaves didn’t build the Pyramids.
The myth that the Pharaoh used thousands of slaves
to construct the Pyramids outside Giza
dates back to Ancient Greek accounts,
and has been depicted in Hollywood films.
Recent discoveries show that the workers were actually paid labors,
who were well fed.
Some workers who died during construction,
were even buried in tombs nearby.
——Quite an honour.
No. 9– You can’t see the Great Wall of China from space.
—Not with the naked eye anyway.
Even from a low orbit and especially from the moon,
astronauts have never claimed to be able to see the Great Wall.
Even the first Chineseastronaut admitted as much.
Parts of the wall are visible in a photograph
taken by an astronaut in 2004.
Desert roads and long bridges are however
visible to the naked eye.
No. 8 – The Vikings were the first Europeans to reach North America.
Despite Columbus getting his own Day,
and credited for the ‘discovery’,
Vikings landed in North America 500 years befor he was even born.
It was Leif Eriksson who first sailed across the Atlantic,
and landed in what is now Canada.
The Vikings then settled in Newfoundland,
but only lasted there a few hundred years,
partially due to clashes with the natives.
No. 7 – Blood doesn’t look blue because
there’s no oxygen.
Veins close to the surface of the skin often look blue,
but this has nothing to do with lack of oxygen.
They only appear blue to the eye
because of how light penetrates the skin and bounces back.
Blood is in fact always red;
it is brightest when full of oxygen and darkest
when the oxygen is depleted.
No. 6 – Edison didn’t invent the light bulb.
The invention is usually credited solely to Edison,
although 70 years earlier,
Humphrey Davey had already invented the Arc Light.
There were several other people working on
the incandescent bulb before Edison.
He and his team just happened to find the perfect method.
They experimented with numerous methods
before they got a light bulb to stay on for 600 hours,
using Japanese bamboo.
No. 5 – Humans have more than five senses.
Of course we all know about smell, sight,
taste, touch and sound, but
these are just our primary senses;
there are believed to be over twenty non-traditional senses.
包括空间感 饥饿感 震动感
They include: sense of space, hunger, vibration,
pain, time and temperature.
Senses help us to process external
and internal information
but only in the physical world.
the sixth sense is not included on this list.
No. 4 – Toilet water doesn’t flush
in different directions in each hemisphere.
Thanks to Bart Simpson,
an entire generation believes that toilets in Australia
flush in the opposite direction to those in America.
This was thought to be because of the rotation of the earth,
and the ‘Coriolis effect’.
It is really just the shape of the bowl,
and angle of the water that affects the how it spins.
3 – The Trojan horse probably wasn’t real.
The Ancient Greek myth goes,
that in order to breach the walls of Troy,
the Greeks offered their enemy a giant wooden horse.
When they brought the horse into the city,
it turned out to be filled with Greek soldiers,
who then sacked the city.
Evidence shows that there was such a city
and it may have been destroyed during a war.
there is no sign that the mythical horse was real.
No. 2 – There is gravity in space,
Even though astronauts do float around in space,
there is still gravity there.
The effects are just diminished the further from Earth you are.
The International Space Station and its occupants
are actually falling towards Earth.
However, the station is moving sideways at such high speeds,
it stays in orbit,
Giving the appearance that everyone inside is floating.
No. 1 – We use more than 10 per cent of our brains.
Thanks to movies like ‘Lucy’,
the myth that we only take advantage of 10 percent of
of our brainpower has remained
for more than 100 years.
In fact, nearly all of our brain is active
at any given moment,
and throughout the day we likely use the full 100 per cent.
The brain uses 20 percent of all of our energy
even though it only weighs 3 percent of our total body weight
That’s all for now guys. I’ll catch you next week.