annotate wisdom/vacuum tube @ 10880:a2e82a8e7f4f

<wob_jonas> slashlearn b_jonas can\'t spell//b_jonas can\'t spell these words: weird, hygiene, etymology, myopia, hibernate, carbohydrate, appearance, maintenance, appropriate, privilege, obsolete, heard, homogeneous, jealous; and confuses these sets of words: drought, draught/draft; couch, coach; depreciate, deprecate; dilate, dilute; contiguous, continuous; d
author HackBot
date Wed, 10 May 2017 23:48:17 +0000
parents 9476192dfbb9
children
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10630
9476192dfbb9 <wob_jonas> slashlearn vacuum tube//After the London terrorist attacks of 2005, the Underground was completely evacuated. Without air resistance, the trains would go at blazingly fast speeds between the terminals. This is called a vacuum tube. Sadly, current technology doesn\'t let passengers travel that way.
HackBot
parents:
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1 After the London terrorist attacks of 2005, the Underground was completely evacuated. Without air resistance, the trains would go at blazingly fast speeds between the terminals. This is called a vacuum tube. Sadly, current technology doesn't let passengers travel that way.