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The Impossibility of Perpetual Motion Machines

3,109,774 views

PBS Space Time

Video Language:

  • English

Caption Language:

  • {{captionLanguage | language_name}} ({{captionLanguage}})

Accent:

  • English (US)

Speech Time:

98%
  • 16:18 / 16:31

Speech Rate:

  • 152 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

classify

/ˈklasəˌfī/

verb

To keep some information secret from the public.

journey

/ˈjərnē/

noun verb

act of travelling from one place to another. travel somewhere.

employed

/imˈploid/

adjective verb

(of person) having paid job. To use something for a specific task.

through

/THro͞o/

adjective adverb preposition

continuing or valid to final destination. expressing movement into one side and out of other side of opening etc.. Allowing you to pass between, or to.

working

/ˈwərkiNG/

adjective noun verb

having paid employment. action of doing work. To operate a machine or device.

persistent

/pərˈsist(ə)nt/

adjective

continuing firmly or obstinately in opinion or course of action in spite of difficulty or opposition.

historical

/hiˈstôrək(ə)l/

adjective

of or concerning history.

extracting
verb

To remove something by pulling or cutting.

conservation

/ˌkänsərˈvāSH(ə)n/

noun

careful use of resource.

challenge

/ˈCHalənj/

noun verb

A question to determine correctness of something. invite to join in contest.

gravity

/ˈɡravədē/

noun

Force making things fall towards the ground.

answers

/ˈansər/

noun other verb

thing said in response to another. Replies to a question someone asked. To solve a test question or a problem.

reversing

/rəˈvərs/

verb

move backward.

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