Thursday, 26 September 2013

The Myths of Science.

Science is a particularly tricky subject, and as such there are many "Urban Legends" floating around. Here are just a few, which I found rather amazing, and proved what I had been told to be rather wrong.

Dogs sweat through their tongues.
Dogs mainly sweat through their paws, but they help to regulate their body temperature via panting. And via panting, their tongues are exposed.

That the blood in veins is blue.
Blood is always red due to the presence of haemoglobin. Veins carry deoxygenated blood which is infact a deep rich red. Veins actually look blue due to the fat under the skin only being able to absorb low-frequency light, this then only allows the highly energetic blue waves to pass through the dark red vein and be reflected back to us: which is why we see veins as blue.

That humans only have 5 senses.
We do have the 5 senses we are all taught about in primary school (sight, smell, touch, taste and hearing). But we also have several more; the senses of balance, acceleration, the position of our body in space, pain and temperature relative to external conditions.

After being in the bath for a long time, we get wrinkly due to osmosis.
This is actually an evolutionary advantage, as the wrinkles on our fingers and feet actually help us to grip slippery surfaces with ease. (Try this out in the bath tub!)

Holding a toad will give you a wart.
The knobbly bits on the toad, which were assumed to be warts are just their markings, and the virus which produces warts in humans is specific to humans. Meaning that you are unable to catch it from a toad or any other animal.

So are any urban science myths true?

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