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2614 |
ehd123 |
9 years ago |
Our ancestors never really noticed the color blue
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Our perception has heavily depended on how well we can accurately describe our surroundings. And this description relies on our language. Our ancestors apparently were not capable of perceiving the color blue. If they did, they were not capable of noticing it, simply because there was no term in language for blue. The first civilization to document and affirm the color blue was the Ancient Egyptian Civilization. In fact, the Ancient Egyptians were the only ancestors that were able to produce blue dyes! Moreover, philologists have compared Hindu, Chinese, Arabic, Hebrew and many more languages only to find no mention of the color blue. However, just because the term for blue did not exist, does not mean our ancestors did not perceive blue. T ...
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2885 |
ehd123 |
9 years ago |
Can our brain run out of space?
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We've all struggled trying to shove magnanimous amounts of information for exams, be it vocabulary, geometry theorems, biology notes, chemistry reactions, physics equations or even just names of acquaintances we meet at weddings or the likes. You might question whether after many years of non-stop learning, be it in a classroom setting, or just basic interactions and do's and don'ts, may we run out of space to absorb all the memories, events and information we encounter. Our brain, unlike the brains of animals and lower ancestors, is not hardwired by instincts. In fact, we have very little in the field of instincts by comparison. Our brain is a learning brain. It is designed to absorb and interconnect information. Now, which of this inform ...
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5053 |
ehd123 |
9 years ago |
Mind-blowing dragon illusion
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This type of optical illusion plays with our brain’s sense of perspective: the dragon’s face looks like it’s sticking out toward us because, after all, we know from a life time of experience that faces stick out instead of cave in. But the exact opposite is actually the case here. Regardless of what you perceive, the entire face of this dragon is inverted making everything backwards: For example, the right eye is actually farther away from us than the left eye, and it’s this inversion that confuses our brains and makes us think the dragon is staring at us. ...
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2669 |
duddy |
9 years ago |
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2652 |
duddy |
9 years ago |
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2585 |
duddy |
9 years ago |
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1699 |
duddy |
9 years ago |
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4188 |
duddy |
9 years ago |
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4425 |
duddy |
9 years ago |
The Ozark cavefish has no eyes
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The Ozark cavefish ( Amblyopsis rosae) is a small subterranean freshwater fish native to the United States. The fish has no pelvic fin; the dorsal and anal fins are farther back than on most fish. It has only rudimentary eyes and no optic nerve.
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4759 |
duddy |
9 years ago |
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1839 |
duddy |
9 years ago |
The 'emo' version of a dove
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The Luzon bleeding heart dove ( Gallicolumba luzonica) gets its name from a splash of vivid red colour at the centre of their white breasts. On first sight it is hard to believe that the bird has not recently been wounded. A reddish hue that extends down the belly furthers the illusion of blood having run down the bird's front.
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2212 |
duddy |
9 years ago |
NASA Spacecraft is 4 weeks and 32 million km away from Pluto
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After a journey spanning nine years and almost 5 billion kilometres, NASA’s New Horizons spacecraft is closer than ever to everyone’s favourite former planet, Pluto. On 14 July 2015, New Horizons is expected to fly within 12,000 km of the lonely cosmic body - about the distance between Seattle and Sydney - zooming through the orbits of its five tiny moons.
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1303 |
duddy |
9 years ago |
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1843 |
duddy |
9 years ago |
Another beautiful bird
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This species of bird, known as the Plum-coloured Starling or Amethyst Starling, is the smallest of the Southern African starlings, reaching only about 18 cm in length. The sexes are strongly sexually dimorphic, meaning that there is a distinct difference in the appearance of the male and female. The breeding male is brilliantly coloured, with feathers an iridescent shining plum violet colour along the length of is back, wings, face and throat, contrasting with bright white on the rest of the body. Females (and juveniles) are a streaky brown and buff colour, and can easily be mistaken for a thrush. ...
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1910 |
duddy |
9 years ago |