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The Leap Second Explained | Space Time | PBS Digital Studios

168,241 views

PBS Space Time

Video Language:

  • English

Caption Language:

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

Accent:

  • English (US)

Speech Time:

95%
  • 2:14 / 2:21

Speech Rate:

  • 186 wpm - Fast

Category:

  • Education

Tags :

Intro:

Video Vocabulary

exactly

/iɡˈzak(t)lē/

adverb

No more and no less than; precisely.

defined

/dəˈfīnd/

adjective verb

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

multiple

/ˈməltəpəl/

adjective noun

Having or involving more than one of something. Number produced by multiplying a smaller number.

ephemeris

/əˈfem(ə)rəs/

noun

Annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year.

motions

/ˈmōSH(ə)n/

noun other verb

action of moving. Suggestions at a meeting. direct someone with movement of hand.

earlier

/ˈərlē/

adjective adverb

happening before usual time. before usual time.

rotation

/rōˈtāSH(ə)n/

noun

action of rotating around axis or center.

slowing

/slō/

verb

To move, with less speed than before.

millisecond

/ˈmiləˌsekənd/

noun

One thousandth of a second.

redefined

/ˌrēdəˈfīn/

verb

To set or mark the limits of something again.

mentioned

/ˈmen(t)SH(ə)n/

verb

refer to something briefly.

seconds

/ˈsekənd/

number other verb

constituting number two in sequence. Units of time; one sixtieth of a minute. To agree to support a proposal at a meeting.

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