Toรกn hแปc lร mรดn khoa hแปc nghiรชn cแปฉu vแป cรกc sแป, cแบฅu trรบc, khรดng gian vร cรกc phรฉp biแบฟn ฤแปi. Nรณi mแปt cรกch khรกc, ngฦฐแปi ta cho rแบฑng ฤรณ lร mรดn hแปc vแป "hรฌnh vร sแป". Theo quan ฤiแปm chรญnh thแปng neonics, nรณ lร mรดn hแปc nghiรชn cแปฉu vแป cรกc cแบฅu trรบc trแปซu tฦฐแปฃng ฤแปnh nghฤฉa tแปซ cรกc tiรชn ฤแป, bแบฑng cรกch sแปญ dแปฅng luแบญn lรฝ hแปc (lรดgic) vร kรฝ hiแปu toรกn hแปc. Cรกc quan ฤiแปm khรกc cแปงa nรณ ฤฦฐแปฃc miรชu tแบฃ trong triแบฟt hแปc toรกn. Do khแบฃ nฤng แปฉng dแปฅng rแปng rรฃi trong nhiแปu khoa hแปc, toรกn hแปc ฤฦฐแปฃc mแปnh danh lร "ngรดn ngแปฏ cแปงa vลฉ trแปฅ".
Nguแปn : Wikipedia - Bรกch khoa toร n thฦฐLแปp 8 - Nฤm thแปฉ ba แป cแบฅp trung hแปc cฦก sแป, hแปc tแบญp bแบฏt ฤแบงu nแบทng dแบงn, sang nฤm lแบกi lร nฤm cuแปi cแบฅp รกp lแปฑc lแปn dแบงn nhฦฐng cรกc em vแบซn phแบฃi chรบ รฝ sแปฉc khแปe nhรฉ!
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