Wednesday, January 12, 2011

Weird (scientific) mistakes!

flat_earth edit The Earth is not flat, and the sun doesn’t go round it. Scientific history has been wrong on many occasions. But which of these common misconceptions do you hold?

 

The daddy long legs is one of the most poisonous spiders in the world but its fangs are too small to inject the poison into you

This is false. The daddy long legs, or ‘harvestman’ spider does not even have venom glands, let alone fangs with which to bite you. They are completely harmless to humans. Flies, however… daddy_long_legs_lrg

  The only man-made object you can see from the moon is the Great Wall of China

This rumour began around the time of the first Apollo mission, but unfortunately it is untrue. The Great Wall of China, although long, is only around 10 ft wide. If you could see the Great Wall from space, you’d also be able to see the M25! great_wall_china_photo_gov

Lemmings throw themselves off cliffs

Nope. The Disney film ‘White Wilderness’ started this myth around 60 years ago, but it is untrue. The lemmings in the film were pushed off the cliff by the production crew, who were attempting to show the colony migrating. Lemmings

The ‘theory’ of evolution is not a fact

An extremely common misconception. Although ‘theory’ may mean ‘educated guess’ in everyday language, in scientific terms it means something which has been rigorously tested and confirmed by experiments to be true. Evolution is a scientific theory just like gravity, or relativity – it’s not just Darwin’s opinion on how humankind came about. einstein-relativity

Hair and fingernails keep growing for two days after you die

This gruesome idea is far too weird to be true. In fact, your skin contracts slightly after you die, exposing more of your hair and fingernails at the roots.

 

There is no gravity in space

Everywhere in the universe has gravity, no matter how far away from a planet or star. Astronauts appear to be floating, but are actually falling – they are pulled by gravity because they are in orbit around a planet. balls1

Your shout!

Did you believe any of these were true? Share your thoughts by posting a comment using the link below.

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