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Who decides how long a second is? - John Kitching

1,642,629 views

TED-Ed

Video Language:

  • English

Caption Language:

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

Accent:

  • English (US)

Speech Time:

91%
  • 5:18 / 5:46

Speech Rate:

  • 130 wpm - Conversational

Category:

  • Education

Tags :

Intro:

Video Vocabulary

revolution

/ˌrevəˈlo͞oSH(ə)n/

noun

When a group overthrows an existing government.

divided

/diˈvīdəd/

adjective verb

Being split in two or more pieces. To separate something into equal pieces.

required

/rəˈkwī(ə)rd/

adjective verb

officially compulsory, or otherwise considered essential. To need something, to make it necessary.

sufficient

/səˈfiSHənt/

adjective

Having or providing enough when needed.

alongside

/əˌlôNGˈsīd/

preposition

close to side of.

precise

/prəˈsīs/

adjective

(Of a time, place, quality) exact.

through

/THro͞o/

adjective adverb preposition

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Allowing you to pass between, or to.

pastoral

/ˈpastərəl/

adjective noun

Of the duty of care that a teacher, priest has. work of literature portraying country life.

defined

/dəˈfīnd/

adjective verb

having definite outline or specification. To explain the meaning of words.

ancient

/ˈān(t)SHənt/

adjective noun

Very old; having lived a very long time ago. old man.

obvious

/ˈäbvēəs/

adjective

Easily understood and clear; plain to see.

society

/səˈsīədē/

noun

aggregate of people living together in more.

measured

/ˈmeZHərd/

adjective verb

having slow, regular rhythm. To determine the value or importance of something.

numerous

/ˈn(y)o͞om(ə)rəs/

adjective

great in number.

calendar

/ˈkaləndər/

noun verb

document. record.

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